The intermetallic compound Gd6Ta4Al43

Acta Crystallographica Section E

Structure Reports Online

ISSN 1600-5368

The intermetallic compound Gd

Ta

Al

Cathie L. Condron,a_{* Joel D.} Strand,b_{Paul C. Canfield}b_and Gordon J. Millera

a_{Department of Chemistry, Iowa State}

University, Ames, IA 50011, USA, and

b_{Department of Physics, Iowa State University,}

and Ames Laboratory, Ames, IA 50011, USA

Correspondence e-mail: [email protected]

Key indicators

Single-crystal X-ray study

T= 293 K

Mean(Al±Al) = 0.002 AÊ

Rfactor = 0.019

wRfactor = 0.043

Data-to-parameter ratio = 16.5

For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.

Gadolinium tantalum aluminium, Gd6Ta4Al43, adopts the Ho6Mo4Al43structure type, with 12-fold coordination around the Gd and twofold coordination around the Ta and Al atoms.

Comment

Compounds with the Ho6Mo4Al43 structure type are good candidates for studying magnetic anisotropic effects because of their hexagonal symmetry and the presence of only one rare-earth site. To investigate this anisotropy, the availability of good-quality single crystals is important. Single crystals of Gd6Ta4Al43were prepared using the metallic solution growth method (Can®eld & Fisk, 1992). Previously, this compound was prepared by annealing a pressed pellet of the elements with atomic ratio R:Ta:Al = 6:4:48 (Wolffet al., 2001).

Gd6Ta4Al43belongs to a large family of isotypic aluminides, R6T4Al43(R= rare-earth element;T= Ti, V, Nb, Ta, Cr, Mo, W) (Niemann & Jeitschko, 1995). Single-crystal re®nement has been reported for Ho6Mo4Al43 (Niemann & Jeitschko, 1994), Dy6Ti4Al43 (Niemann & Jeitschko, 1995) and Ca6W4Al43 (Thiede et al., 1998), as well as Yb6V4Al43 and Yb6Ta4Al43 (Wolff et al., 2001). Other isotypic compounds deviating from the ideal composition have also been reported: Yb6Cr4+xAl43ÿx(x= 1.76; Yanson, Manyako, Bodak,

Zarech-nyuket al., 1994), Ho6Mo4+xAl43ÿx(x = 0.11) and Yb6Cr4+x

-Al43ÿx(x= 1.15; Niemann & Jeitschko, 1994), Y6Cr4+xAl43ÿx

(x= 2.57; CÏernyÂet al., 1995), along with Tb6Cr4+xAl43ÿx(x=

1.6), Ho6Cr4+xAl43ÿx(x= 1.6), Er6Cr4+xAl43ÿx(x= 1.96) and

Lu6Cr4+xAl43-x(x= 2.76) (Yanson, Manyako, Bodak, CÏernyÂet

al., 1994). The lattice parameters previously re®ned from powder data for Gd6Ta4Al43 [a = 11.099 (2) AÊ and c = 17.896 (4) AÊ; Niemann & Jeitschko, 1995] differ only slightly from those presented here. There was no evidence of devi-ation from the ideal composition in the present structure re®nement.

Received 28 July 2003 Accepted 30 September 2003 Online 15 October 2003

inorganic papers

i148

Fig. 1 shows the hexagonal unit cell of Gd6Ta4Al43. Each Gd atom is coordinated by 17 atoms (one Gd, one Ta, and 15 Al atoms). The GdÐAl distances range from 3.0681 (14) to 3.4178 (5) AÊ, and the GdÐGd and GdÐTa distances are 3.489 (2) and 3.533 (6) AÊ, respectively. The remaining atoms are 12-coordinate: distorted icosahedra around Ta1, Al4, Al5, and Al6; regular icosahedron around Ta2; and distorted bicapped pentagonal prisms around Al1, Al2, Al3, and Al7. The short GdÐGd distances suggest the formation of pairs that extend quasi-in®nitely in the c direction. The distance between these pairs is signi®cantly larger at 5.513 (2) AÊ, beyond the expected metal±metal bonding distance for Gd. Magnetic measurements on powder samples for many members of theR6T4Al43family have been reported (Wolffet al., 2001). Powder samples of Gd6Ta4Al43 exhibit ferro- or meta-magnetic behavior; magnetic measurements on single crystals are envisaged.

Experimental

The elements Gd (99.999%; Ames Laboratory), Ta (99.999%; Ames Laboratory), and Al (99.98%; Alfa) were combined in the atomic ratio Gd6Ta4Al100in a 2 ml alumina crucible. The crucible was placed

into a fused silica tube and a second crucible, ®lled with SiO2wool,

was placed inverted on top of the ®rst. The tube was sealed under 1/5 atm Ar and placed into a box furnace. The mixture was heated to 1463 K in 3 h, kept at 1463 K for 2 h, and then cooled to 1173 K over 64 h. The reaction vessel was removed from the furnace at 1173 K, and the excess liquid was immediately decanted to isolate hexagonal prisms of the title compound.

Crystal data

Gd6Ta4Al43 Mr= 2827.44

Hexagonal,P63=mcm a= 11.1047 (16) AÊ

c= 17.885 (4) AÊ

V= 1910.0 (5) AÊ3 Z= 2

Dx= 4.916 Mg mÿ3

MoKradiation

Cell parameters from 12079 re¯ections

= 4.6±56.5

= 22.66 mmÿ1 T= 293 (2) K Prism, silver

0.190.090.05 mm

Data collection

Bruker SMART APEX diffractometer !scans

Absorption correction: multi-scan (SADABS; Sheldrick, 2002)

Tmin= 0.099,Tmax= 0.322 11039 measured re¯ections

873 independent re¯ections 859 re¯ections withI> 2(I)

Rint= 0.036 max= 28.2 h=ÿ14!14

k=ÿ14!10

l=ÿ22!22

Re®nement

Re®nement onF2 R[F2_{> 2(F}2_{)] = 0.019} wR(F2_{) = 0.043} S= 1.34 873 re¯ections 53 parameters

w= 1/[2_(F

o2) + (0.0157P)2

+ 8.7197P]

whereP= (Fo2+ 2Fc2)/3

(/)max< 0.001

max= 1.51 e AÊÿ3

min=ÿ0.85 e AÊÿ3

Extinction correction:SHELXL97 Extinction coef®cient: 0.00078 (5)

The highest peak in the difference density map is 0.77 AÊ from Ta1. Data collection:SMART(Bruker, 2003); cell re®nement:SAINT

(Bruker, 2003); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2001); program(s) used to re®ne structure:SHELXTL; molecular graphics:Balls and Sticks(Kang & Ozawa, 2003); software used to prepare material for publication:

SHELXTL.

This work was supported by the National Science Found-ation through grants DMR 9981766 and 36481AC5 and by the Director for Energy Research, Of®ce of Basic Energy Sciences. Ames Laboratory is operated for the US Depart-ment of Energy by Iowa State University under contract No. W-7405-Eng-82.

References

Bruker (2003).SMARTandSAINT. Bruker AXS Inc., Madison, Wisconsin, USA.

Can®eld, P. C. & Fisk, Z. (1992).Philos. Mag. B,65, 1117±1123.

CÏernyÂ, R., Yvon, K., Yanson, T. I., Manyako, M. B. & Bodak, O. I. (1995).

Powder Diffr.10, 86±90.

Kang, S. J. & Ozawa, T. C. (2003). Balls and Sticks. Version 1.48. URL: www.toycrate.org

Niemann, S. & Jeitschko, W. (1994).Z. Metallkdd.85, 345±349. Niemann, S. & Jeitschko, W. (1995).J. Solid State Chem.116, 131±135. Sheldrick, G. M. (2001).SHELXTL.Version 6.10. Bruker AXS Inc., Madison,

Wisconsin, USA.

Sheldrick, G. M. (2002).SADABS. Version 2.03. University of GoÈttingen, Germany.

Thiede, V. M. T., Jeitschko, W., Niemann, S. & Ebel, T. (1998). J. Alloys Compd,267, 23±31.

Wolff, M. W., Niemann, S., Ebel, T. & Jeitschko, W. (2001).J. Magn. Magn. Mater.223, 1±15.

Yanson, T. I., Manyako, M. B., Bodak, O. I., CÏernyÂ, R., Pacheco, J. V. & Yvon, K. (1994).Z. Kristallogr.209, 922±923.

Yanson, T. I., Manyako, M. B., Bodak, O. I., Zarechnyuk, O. S., Gladyshevskii, R. E., CernyÂ, R. & Yvon, K. (1994).Acta Cryst.C50, 1529±1531.

Figure 2

Packing diagram of Gd6Ta4Al43, viewed along thecaxis. Key: Gd, blue;

supporting information

Acta Cryst. (2003). E59, i147–i148 [https://doi.org/10.1107/S1600536803021640]

The intermetallic compound Gd

Ta

Al

Cathie L. Condron, Joel D. Strand, Paul C. Canfield and Gordon J. Miller

gadolinium tantalum aluminium

Crystal data

Gd6Ta4Al43 Mr = 2827.44 Hexagonal, P63/mcm

Hall symbol: -P 6c 2

a = 11.1047 (16) Å

c = 17.885 (4) Å

V = 1910.0 (5) Å3 Z = 2

F(000) = 2470

Dx = 4.916 Mg m−3

Mo Kα radiation, λ = 0.71073 Å Cell parameters from 12079 reflections

θ = 4.6–56.5°

µ = 22.66 mm−1 T = 293 K Prism, silver

0.19 × 0.09 × 0.05 mm

Data collection

Bruker SMART APEX diffractometer

Radiation source: normal sealed tube Graphite monochromator

ω scans

Absorption correction: multi-scan (SADABS2.03; Sheldrick, 2002)

Tmin = 0.099, Tmax = 0.322

11039 measured reflections 873 independent reflections 859 reflections with I > 2σ(I)

Rint = 0.036

θmax = 28.2°, θmin = 2.1° h = −14→14

k = −14→10

l = −22→22

Refinement

Refinement on F2

Least-squares matrix: full

R[F2 _{> 2σ(F}2_{)] = 0.019} wR(F2_{) = 0.043} S = 1.34 873 reflections 53 parameters 0 restraints

Primary atom site location: structure-invariant direct methods

Secondary atom site location: difference Fourier map

w = 1/[σ2_(F

o2) + (0.0157P)2 + 8.7197P]

where P = (Fo2 _{+ 2Fc}2_)/3

(Δ/σ)max < 0.001

Δρmax = 1.51 e Å−3

Δρmin = −0.85 e Å−3

Extinction correction: SHELXL97, Fc*_{=kFc[1+0.001xFc}2_λ3_/sin(2θ)]-1/4

Extinction coefficient: 0.00078 (5)

Special details

supporting information

sup-2

Acta Cryst. (2003). E59, i147–i148

Refinement. Refinement of F2 _{against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F}2_,

conventional R-factors R are based on F, with F set to zero for negative F2_{. The threshold expression of F}2 _{> σ(F}2_{) is used}

only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2

are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2₎

x y z Uiso*/Ueq

Gd 0.52907 (3) 0.0000 0.095876 (16) 0.00727 (11)

Ta1 0.72815 (3) 0.0000 0.2500 0.00436 (11)

Ta2 0.0000 0.0000 0.0000 0.00447 (14)

Al1 0.60496 (14) 0.76378 (15) 0.16351 (8) 0.0103 (3) Al2 0.0000 0.84110 (18) 0.11526 (10) 0.0094 (4) Al3 0.25515 (17) 0.0000 0.02958 (11) 0.0092 (4) Al4 0.4459 (2) 0.8513 (2) 0.2500 0.0091 (4) Al5 0.5057 (2) 0.75285 (10) 0.0000 0.0098 (4)

Al6 0.3333 0.6667 0.12544 (13) 0.0090 (4)

Al7 0.0000 0.1485 (3) 0.2500 0.0093 (5)

Atomic displacement parameters (Å2₎

U11 _U22 _U33 _U12 _U13 _U23

Gd 0.00779 (14) 0.00683 (16) 0.00686 (16) 0.00341 (8) 0.00117 (9) 0.000 Ta1 0.00402 (14) 0.00412 (17) 0.00498 (17) 0.00206 (9) 0.000 0.000 Ta2 0.00471 (18) 0.00471 (18) 0.0040 (3) 0.00235 (9) 0.000 0.000 Al1 0.0076 (6) 0.0090 (6) 0.0125 (6) 0.0027 (5) −0.0001 (5) −0.0025 (5) Al2 0.0086 (9) 0.0109 (7) 0.0080 (8) 0.0043 (4) 0.000 0.0027 (6) Al3 0.0080 (6) 0.0098 (9) 0.0106 (9) 0.0049 (5) −0.0001 (6) 0.000 Al4 0.0065 (9) 0.0119 (9) 0.0080 (8) 0.0038 (7) 0.000 0.000 Al5 0.0077 (9) 0.0092 (6) 0.0122 (8) 0.0038 (4) 0.000 −0.0017 (6) Al6 0.0082 (6) 0.0082 (6) 0.0106 (10) 0.0041 (3) 0.000 0.000 Al7 0.0054 (12) 0.0106 (10) 0.0103 (12) 0.0027 (6) 0.000 0.000

Geometric parameters (Å, º)

Gd—Al1i _{3.0681 (14) Al2—Al7}xxiii _{2.9548 (19)}

Gd—Al1ii _{3.0681 (14) Al2—Al7}xxvii _{2.9548 (19)}

Gd—Al4iii _{3.1069 (11) Al2—Gd}xx _{3.482 (2)}

Gd—Al4iv _{3.1069 (11) Al3—Al5}xxviii _{2.7525 (19)}

Gd—Al5iv _{3.1350 (4) Al3—Al5}i _{2.7525 (19)}

Gd—Al5v _{3.1350 (4) Al3—Al2}xvii _{2.802 (3)}

Gd—Al3 3.265 (2) Al3—Al2xv _{2.9139 (19)}

Gd—Al6vi _{3.2650 (6) Al3—Al2}iv _{2.9139 (19)}

Gd—Al6iv _{3.2650 (6) Al3—Al1}ii _{2.919 (2)}

Gd—Al3vii _{3.283 (2) Al3—Al1}i _{2.919 (2)}

Gd—Al1viii _{3.3564 (15) Al3—Gd}vii _{3.283 (2)}

Gd—Al1iv _{3.3564 (15) Al4—Ta1}xxii _{2.716 (2)}

Ta1—Al7i _{2.6181 (5) Al4—Al1}xxix _{2.750 (2)}

Ta1—Al4iv _{2.716 (2) Al4—Al6 2.858 (2)}

Ta1—Al4iii _{2.716 (2) Al4—Al6}xiii _{2.858 (2)}

Ta1—Al2x _{2.7168 (19) Al4—Al1}xiii _{2.859 (2)}

Ta1—Al2xi _{2.7168 (19) Al4—Al4}xxx _{2.860 (4)}

Ta1—Al1iv _{2.7490 (14) Al4—Gd}xxxi _{3.1069 (11)}

Ta1—Al1iii _{2.7490 (14) Al4—Gd}xxii _{3.1069 (11)}

Ta1—Al1viii _{2.7490 (14) Al5—Al3}xxviii _{2.7525 (19)}

Ta1—Al1xii _{2.7490 (14) Al5—Al3}xxiv _{2.7525 (19)}

Ta1—Gdxiii _{3.5336 (6) Al5—Al6}xxxii _{2.790 (2)}

Ta2—Al2xiv _{2.7135 (19) Al5—Al6 2.790 (2)}

Ta2—Al2xv _{2.7135 (19) Al5—Al5}xxiii _{2.871 (3)}

Ta2—Al2iv _{2.7135 (19) Al5—Al5}xv _{2.871 (3)}

Ta2—Al2xvi _{2.7135 (19) Al5—Gd}xxii _{3.1350 (4)}

Ta2—Al2xvii _{2.7135 (19) Al5—Gd}xix _{3.1350 (4)}

Ta2—Al2xviii _{2.7135 (19) Al5—Gd}xxviii _{3.4178 (5)}

Ta2—Al3xix _{2.8824 (19) Al5—Gd}xxiv _{3.4178 (5)}

Ta2—Al3xi _{2.8824 (19) Al6—Al1}xv _{2.7335 (15)}

Ta2—Al3 2.8824 (19) Al6—Al1xxiii _{2.7335 (15)}

Ta2—Al3xx _{2.8824 (19) Al6—Al5}xv _{2.790 (2)}

Ta2—Al3v _{2.8824 (19) Al6—Al5}xxiii _{2.790 (2)}

Ta2—Al3xxi _{2.8824 (19) Al6—Al4}xv _{2.858 (2)}

Al1—Al6 2.7335 (15) Al6—Al4xxiii _{2.858 (2)}

Al1—Ta1xxii _{2.7490 (14) Al6—Gd}xx _{3.2650 (6)}

Al1—Al4xxiii _{2.750 (2) Al6—Gd}xxii _{3.2650 (6)}

Al1—Al2xxiii _{2.7611 (18) Al6—Gd}xxiv _{3.2650 (6)}

Al1—Al7xv _{2.858 (2) Al7—Ta1}xxxiii _{2.6181 (5)}

Al1—Al4 2.859 (2) Al7—Ta1xxiv _{2.6181 (5)}

Al1—Al3xxiv _{2.919 (2) Al7—Al7}xx _{2.856 (5)}

Al1—Gdxxiv _{3.0681 (14) Al7—Al7}xi _{2.856 (5)}

Al1—Gdxxii _{3.3564 (15) Al7—Al1}xxxiv _{2.858 (2)}

Al2—Ta2xxii _{2.7135 (19) Al7—Al1}xxxv _{2.858 (2)}

Al2—Ta1xx _{2.7168 (19) Al7—Al1}xxiii _{2.858 (2)}

Al2—Al1xxv _{2.7611 (18) Al7—Al1}xxxvi _{2.858 (2)}

Al2—Al1xv _{2.7611 (18) Al7—Al2}xviii _{2.9548 (19)}

Al2—Al3xxvi _{2.802 (3) Al7—Al2}xxix _{2.9548 (19)}

Al2—Al3xxiii _{2.914 (2) Al7—Al2}xxxvii _{2.9548 (19)}

Al2—Al3xxii _{2.914 (2) Al7—Al2}xv _{2.9548 (19)}

Al1i_—Gd—Al1ii _{59.71 (5) Al1}xv_—Al2—Gdxx _{63.82 (5)}

Al1i_—Gd—Al4iii _{81.66 (5) Al3}xxvi_—Al2—Gdxx _{61.86 (6)}

Al1ii_—Gd—Al4iii _{52.89 (4) Al3}xxiii_—Al2—Gdxx _{93.81 (5)}

Al1i_—Gd—Al4iv _{52.89 (4) Al3}xxii_—Al2—Gdxx _{93.81 (5)}

Al1ii_—Gd—Al4iv _{81.66 (5) Al7}xxiii_—Al2—Gdxx _{113.44 (6)}

Al4iii_—Gd—Al4iv _{54.81 (7) Al7}xxvii_—Al2—Gdxx _{113.44 (6)}

Al1i_—Gd—Al5iv _{96.46 (4) Al5}xxviii_—Al3—Al5i _{119.43 (8)}

Al1ii_—Gd—Al5iv _{150.14 (4) Al5}xxviii_—Al3—Al2xvii _{90.01 (5)}

supporting information

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Acta Cryst. (2003). E59, i147–i148

Al4iv_—Gd—Al5iv _{98.49 (4) Al5}xxviii_{—Al3—Ta2 115.03 (5)}

Al1i_—Gd—Al5v _{150.14 (4) Al5}i_{—Al3—Ta2 115.03 (5)}

Al1ii_—Gd—Al5v _{96.46 (4) Al2}xvii_{—Al3—Ta2 57.00 (5)}

Al4iii_—Gd—Al5v _{98.49 (4) Al5}xxviii_—Al3—Al2xv _{87.73 (4)}

Al4iv_—Gd—Al5v _{147.72 (4) Al5}i_—Al3—Al2xv _{150.01 (7)}

Al5iv_—Gd—Al5v _{98.60 (5) Al2}xvii_—Al3—Al2xv _{103.34 (8)}

Al1i_{—Gd—Al3 54.79 (4) Ta2—Al3—Al2}xv _{55.83 (5)}

Al1ii_{—Gd—Al3 54.79 (4) Al5}xxviii_—Al3—Al2iv _{150.01 (7)}

Al4iii_{—Gd—Al3 107.02 (5) Al5}i_—Al3—Al2iv _{87.73 (4)}

Al4iv_{—Gd—Al3 107.02 (5) Al2}xvii_—Al3—Al2iv _{103.34 (8)}

Al5iv_{—Gd—Al3 97.59 (4) Ta2—Al3—Al2}iv _{55.83 (5)}

Al5v_{—Gd—Al3 97.59 (4) Al2}xv_—Al3—Al2iv _{63.26 (9)}

Al1i_—Gd—Al6vi _{110.40 (3) Al5}xxviii_—Al3—Al1ii _{66.34 (4)}

Al1ii_—Gd—Al6vi _{51.02 (3) Al5}i_—Al3—Al1ii _{120.15 (7)}

Al4iii_—Gd—Al6vi _{53.22 (5) Al2}xvii_—Al3—Al1ii _{147.81 (4)}

Al4iv_—Gd—Al6vi _{107.76 (5) Ta2—Al3—Al1}ii _{112.13 (6)}

Al5iv_—Gd—Al6vi _{150.23 (4) Al2}xv_—Al3—Al1ii _{56.50 (5)}

Al5v_—Gd—Al6vi _{51.63 (4) Al2}iv_—Al3—Al1ii _{89.82 (7)}

Al3—Gd—Al6vi _{88.093 (17) Al5}xxviii_—Al3—Al1i _{120.15 (7)}

Al1i_—Gd—Al6iv _{51.02 (3) Al5}i_—Al3—Al1i _{66.34 (4)}

Al1ii_—Gd—Al6iv _{110.40 (3) Al2}xvii_—Al3—Al1i _{147.81 (4)}

Al4iii_—Gd—Al6iv _{107.76 (5) Ta2—Al3—Al1}i _{112.13 (6)}

Al4iv_—Gd—Al6iv _{53.22 (5) Al2}xv_—Al3—Al1i _{89.82 (7)}

Al5iv_—Gd—Al6iv _{51.63 (4) Al2}iv_—Al3—Al1i _{56.50 (5)}

Al5v_—Gd—Al6iv _{150.23 (4) Al1}ii_—Al3—Al1i _{63.10 (7)}

Al3—Gd—Al6iv _{88.093 (17) Al5}xxviii_{—Al3—Gd 68.62 (4)}

Al6vi_—Gd—Al6iv _{158.13 (7) Al5}i_{—Al3—Gd 68.62 (4)}

Al1i_—Gd—Al3vii _{146.44 (3) Al2}xvii_{—Al3—Gd 133.72 (8)}

Al1ii_—Gd—Al3vii _{146.44 (3) Ta2—Al3—Gd 169.28 (7)}

Al4iii_—Gd—Al3vii _{129.02 (5) Al2}xv_{—Al3—Gd 115.65 (6)}

Al4iv_—Gd—Al3vii _{129.02 (5) Al2}iv_{—Al3—Gd 115.65 (6)}

Al5iv_—Gd—Al3vii _{50.73 (3) Al1}ii_{—Al3—Gd 59.18 (4)}

Al5v_—Gd—Al3vii _{50.73 (3) Al1}i_{—Al3—Gd 59.18 (4)}

Al3—Gd—Al3vii _{115.58 (4) Al5}xxviii_—Al3—Gdvii _{61.86 (4)}

Al6vi_—Gd—Al3vii _{100.54 (3) Al5}i_—Al3—Gdvii _{61.86 (4)}

Al6iv_—Gd—Al3vii _{100.54 (3) Al2}xvii_—Al3—Gdvii _{69.30 (6)}

Al1i_—Gd—Al1viii _{133.69 (5) Ta2—Al3—Gd}vii _{126.31 (7)}

Al1ii_—Gd—Al1viii _{90.96 (5) Al2}xv_—Al3—Gdvii _{148.02 (4)}

Al4iii_—Gd—Al1viii _{52.34 (4) Al2}iv_—Al3—Gdvii _{148.02 (4)}

Al4iv_—Gd—Al1viii _{90.69 (4) Al1}ii_—Al3—Gdvii _{113.14 (6)}

Al5iv_—Gd—Al1viii _{118.84 (4) Al1}i_—Al3—Gdvii _{113.14 (6)}

Al5v_—Gd—Al1viii _{57.05 (3) Gd—Al3—Gd}vii _{64.42 (4)}

Al3—Gd—Al1viii _{136.80 (2) Ta1}xxii_—Al4—Al1xv _{136.13 (6)}

Al6vi_—Gd—Al1viii _{48.74 (3) Ta1}xxii_—Al4—Al1xxix _{136.13 (6)}

Al6iv_—Gd—Al1viii _{132.04 (4) Al1}xv_—Al4—Al1xxix _{68.46 (7)}

Al3vii_—Gd—Al1viii _{77.16 (4) Ta1}xxii_{—Al4—Al6 113.20 (5)}

Al1i_—Gd—Al1iv _{90.96 (5) Al1}xv_{—Al4—Al6 58.31 (4)}

Al4iii_—Gd—Al1iv _{90.69 (4) Ta1}xxii_—Al4—Al6xiii _{113.20 (5)}

Al4iv_—Gd—Al1iv _{52.34 (4) Al1}xv_—Al4—Al6xiii _{110.59 (7)}

Al5iv_—Gd—Al1iv _{57.05 (3) Al1}xxix_—Al4—Al6xiii _{58.31 (4)}

Al5v_—Gd—Al1iv _{118.84 (4) Al6—Al4—Al6}xiii _{102.44 (9)}

Al3—Gd—Al1iv _{136.80 (2) Ta1}xxii_—Al4—Al1xiii _{59.02 (5)}

Al6vi_—Gd—Al1iv _{132.04 (4) Al1}xv_—Al4—Al1xiii _{160.85 (9)}

Al6iv_—Gd—Al1iv _{48.74 (3) Al1}xxix_—Al4—Al1xiii _{109.64 (6)}

Al3vii_—Gd—Al1iv _{77.16 (4) Al6—Al4—Al1}xiii _{107.50 (7)}

Al1viii_—Gd—Al1iv _{85.20 (5) Al6}xiii_—Al4—Al1xiii _{57.12 (4)}

Al7ix_—Ta1—Al7i _{66.11 (12) Ta1}xxii_{—Al4—Al1 59.02 (5)}

Al7ix_—Ta1—Al4iv _{178.71 (8) Al1}xv_{—Al4—Al1 109.64 (6)}

Al7i_—Ta1—Al4iv _{115.18 (8) Al1}xxix_{—Al4—Al1 160.85 (9)}

Al7ix_—Ta1—Al4iii _{115.18 (8) Al6—Al4—Al1 57.12 (4)}

Al7i_—Ta1—Al4iii _{178.71 (8) Al6}xiii_{—Al4—Al1 107.50 (7)}

Al4iv_—Ta1—Al4iii _{63.54 (8) Al1}xiii_{—Al4—Al1 65.50 (7)}

Al7ix_—Ta1—Al2x _{67.23 (4) Ta1}xxii_—Al4—Al4xxx _{58.23 (4)}

Al7i_—Ta1—Al2x _{67.23 (4) Al1}xv_—Al4—Al4xxx _{92.03 (5)}

Al4iv_—Ta1—Al2x _{113.11 (4) Al1}xxix_—Al4—Al4xxx _{92.03 (5)}

Al4iii_—Ta1—Al2x _{113.11 (4) Al6—Al4—Al4}xxx _{128.42 (4)}

Al7ix_—Ta1—Al2xi _{67.23 (4) Al6}xiii_—Al4—Al4xxx _{128.42 (4)}

Al7i_—Ta1—Al2xi _{67.23 (4) Al1}xiii_—Al4—Al4xxx _{107.12 (5)}

Al4iv_—Ta1—Al2xi _{113.11 (4) Al1—Al4—Al4}xxx _{107.12 (5)}

Al4iii_—Ta1—Al2xi _{113.11 (4) Ta1}xxii_—Al4—Gdxxxi _{74.38 (4)}

Al2x_—Ta1—Al2xi _{125.01 (9) Al1}xv_—Al4—Gdxxxi _{122.79 (7)}

Al7ix_—Ta1—Al1iv _{117.90 (6) Al1}xxix_—Al4—Gdxxxi _{62.83 (4)}

Al7i_—Ta1—Al1iv _{64.31 (6) Al6—Al4—Gd}xxxi _{168.56 (7)}

Al4iv_—Ta1—Al1iv _{63.09 (4) Al6}xiii_—Al4—Gdxxxi _{66.22 (3)}

Al4iii_—Ta1—Al1iv _{114.69 (4) Al1}xiii_—Al4—Gdxxxi _{68.32 (4)}

Al2x_—Ta1—Al1iv _{120.57 (3) Al1—Al4—Gd}xxxi _{126.19 (7)}

Al2xi_—Ta1—Al1iv _{60.68 (3) Al4}xxx_—Al4—Gdxxxi _{62.60 (3)}

Al7ix_—Ta1—Al1iii _{64.31 (6) Ta1}xxii_—Al4—Gdxxii _{74.38 (4)}

Al7i_—Ta1—Al1iii _{117.90 (6) Al1}xv_—Al4—Gdxxii _{62.83 (4)}

Al4iv_—Ta1—Al1iii _{114.69 (4) Al1}xxix_—Al4—Gdxxii _{122.79 (7)}

Al4iii_—Ta1—Al1iii _{63.09 (4) Al6—Al4—Gd}xxii _{66.22 (3)}

Al2x_—Ta1—Al1iii _{60.68 (3) Al6}xiii_—Al4—Gdxxii _{168.56 (7)}

Al2xi_—Ta1—Al1iii _{120.57 (3) Al1}xiii_—Al4—Gdxxii _{126.19 (7)}

Al1iv_—Ta1—Al1iii _{177.65 (6) Al1—Al4—Gd}xxii _{68.32 (4)}

Al7ix_—Ta1—Al1viii _{64.31 (6) Al4}xxx_—Al4—Gdxxii _{62.60 (3)}

Al7i_—Ta1—Al1viii _{117.90 (6) Gd}xxxi_—Al4—Gdxxii _{125.05 (7)}

Al4iv_—Ta1—Al1viii _{114.69 (4) Al3}xxviii_—Al5—Al3xxiv _{66.65 (8)}

Al4iii_—Ta1—Al1viii _{63.09 (4) Al3}xxviii_—Al5—Al6xxxii _{110.00 (5)}

Al2x_—Ta1—Al1viii _{120.57 (3) Al3}xxiv_—Al5—Al6xxxii _{130.62 (5)}

Al2xi_—Ta1—Al1viii _{60.68 (3) Al3}xxviii_{—Al5—Al6 130.62 (5)}

Al1iv_—Ta1—Al1viii _{111.46 (6) Al3}xxiv_{—Al5—Al6 110.00 (5)}

Al1iii_—Ta1—Al1viii _{68.49 (6) Al6}xxxii_{—Al5—Al6 107.08 (8)}

Al7ix_—Ta1—Al1xii _{117.90 (6) Al3}xxviii_—Al5—Al5xxiii _{168.80 (4)}

Al7i_—Ta1—Al1xii _{64.31 (6) Al3}xxiv_—Al5—Al5xxiii _{117.79 (4)}

supporting information

sup-6

Acta Cryst. (2003). E59, i147–i148

Al4iii_—Ta1—Al1xii _{114.69 (4) Al6—Al5—Al5}xxiii _{59.03 (3)}

Al2x_—Ta1—Al1xii _{60.68 (3) Al3}xxviii_—Al5—Al5xv _{117.79 (4)}

Al2xi_—Ta1—Al1xii _{120.57 (3) Al3}xxiv_—Al5—Al5xv _{168.80 (4)}

Al1iv_—Ta1—Al1xii _{68.49 (6) Al6}xxxii_—Al5—Al5xv _{59.03 (3)}

Al1iii_—Ta1—Al1xii _{111.46 (6) Al6—Al5—Al5}xv _{59.03 (3)}

Al1viii_—Ta1—Al1xii _{177.65 (6) Al5}xxiii_—Al5—Al5xv _60.0

Al7ix_{—Ta1—Gd 121.63 (3) Al3}xxviii_—Al5—Gdxxii _{67.41 (4)}

Al7i_{—Ta1—Gd 121.63 (3) Al3}xxiv_—Al5—Gdxxii _{105.33 (6)}

Al4iv_{—Ta1—Gd 57.865 (18) Al6}xxxii_—Al5—Gdxxii _{118.85 (3)}

Al4iii_{—Ta1—Gd 57.865 (18) Al6—Al5—Gd}xxii _{66.588 (18)}

Al2x_{—Ta1—Gd 168.77 (4) Al5}xxiii_—Al5—Gdxxii _{118.63 (3)}

Al2xi_{—Ta1—Gd 66.23 (4) Al5}xv_—Al5—Gdxxii _{69.21 (3)}

Al1iv_{—Ta1—Gd 63.14 (3) Al3}xxviii_—Al5—Gdxix _{105.33 (6)}

Al1iii_{—Ta1—Gd 115.22 (3) Al3}xxiv_—Al5—Gdxix _{67.41 (4)}

Al1viii_{—Ta1—Gd 63.14 (3) Al6}xxxii_—Al5—Gdxix _{66.588 (18)}

Al1xii_{—Ta1—Gd 115.22 (3) Al6—Al5—Gd}xix _{118.85 (3)}

Al7ix_—Ta1—Gdxiii _{121.63 (3) Al5}xxiii_—Al5—Gdxix _{69.21 (3)}

Al7i_—Ta1—Gdxiii _{121.63 (3) Al5}xv_—Al5—Gdxix _{118.63 (3)}

Al4iv_—Ta1—Gdxiii _{57.865 (18) Gd}xxii_—Al5—Gdxix _{171.78 (7)}

Al4iii_—Ta1—Gdxiii _{57.865 (18) Al3}xxviii_—Al5—Gdxxviii _{62.80 (4)}

Al2x_—Ta1—Gdxiii _{66.23 (4) Al3}xxiv_—Al5—Gdxxviii _{128.36 (6)}

Al2xi_—Ta1—Gdxiii _{168.77 (4) Al6}xxxii_—Al5—Gdxxviii _{62.506 (15)}

Al1iv_—Ta1—Gdxiii _{115.22 (3) Al6—Al5—Gd}xxviii _{110.20 (4)}

Al1iii_—Ta1—Gdxiii _{63.14 (3) Al5}xxiii_—Al5—Gdxxviii _{110.18 (3)}

Al1viii_—Ta1—Gdxiii _{115.22 (3) Al5}xv_—Al5—Gdxxviii _{59.04 (3)}

Al1xii_—Ta1—Gdxiii _{63.14 (3) Gd}xxii_—Al5—Gdxxviii _{64.187 (15)}

Gd—Ta1—Gdxiii _{102.540 (19) Gd}xix_—Al5—Gdxxviii _{116.708 (15)}

Al2xiv_—Ta2—Al2xv _{180.00 (9) Al3}xxviii_—Al5—Gdxxiv _{128.36 (6)}

Al2xiv_—Ta2—Al2iv _{111.45 (7) Al3}xxiv_—Al5—Gdxxiv _{62.80 (4)}

Al2xv_—Ta2—Al2iv _{68.55 (7) Al6}xxxii_—Al5—Gdxxiv _{110.20 (4)}

Al2xiv_—Ta2—Al2xvi _{68.55 (7) Al6—Al5—Gd}xxiv _{62.506 (15)}

Al2xv_—Ta2—Al2xvi _{111.45 (7) Al5}xxiii_—Al5—Gdxxiv _{59.04 (3)}

Al2iv_—Ta2—Al2xvi _{180.00 (8) Al5}xv_—Al5—Gdxxiv _{110.18 (3)}

Al2xiv_—Ta2—Al2xvii _{68.55 (7) Gd}xxii_—Al5—Gdxxiv _{116.708 (15)}

Al2xv_—Ta2—Al2xvii _{111.45 (7) Gd}xix_—Al5—Gdxxiv _{64.187 (15)}

Al2iv_—Ta2—Al2xvii _{111.45 (7) Gd}xxviii_—Al5—Gdxxiv _{168.77 (6)}

Al2xvi_—Ta2—Al2xvii _{68.55 (7) Al1}xv_—Al6—Al1xxiii _{114.01 (4)}

Al2xiv_—Ta2—Al2xviii _{111.45 (7) Al1}xv_{—Al6—Al1 114.01 (4)}

Al2xv_—Ta2—Al2xviii _{68.55 (7) Al1}xxiii_{—Al6—Al1 114.01 (4)}

Al2iv_—Ta2—Al2xviii _{68.55 (7) Al1}xv_—Al6—Al5xv _{68.43 (5)}

Al2xvi_—Ta2—Al2xviii _{111.45 (7) Al1}xxiii_—Al6—Al5xv _{113.79 (5)}

Al2xvii_—Ta2—Al2xviii _{180.00 (8) Al1—Al6—Al5}xv _{124.42 (6)}

Al2xiv_—Ta2—Al3xix _{119.99 (6) Al1}xv_—Al6—Al5xxiii _{124.42 (6)}

Al2xv_—Ta2—Al3xix _{60.01 (6) Al1}xxiii_—Al6—Al5xxiii _{68.43 (5)}

Al2iv_—Ta2—Al3xix _{117.33 (3) Al1—Al6—Al5}xxiii _{113.79 (5)}

Al2xvi_—Ta2—Al3xix _{62.67 (3) Al5}xv_—Al6—Al5xxiii _{61.95 (7)}

Al2xvii_—Ta2—Al3xix _{62.67 (3) Al1}xv_{—Al6—Al5 113.79 (5)}

Al2xiv_—Ta2—Al3xi _{60.01 (6) Al1—Al6—Al5 68.43 (5)}

Al2xv_—Ta2—Al3xi _{119.99 (6) Al5}xv_{—Al6—Al5 61.95 (7)}

Al2iv_—Ta2—Al3xi _{62.67 (3) Al5}xxiii_{—Al6—Al5 61.95 (7)}

Al2xvi_—Ta2—Al3xi _{117.33 (3) Al1}xv_{—Al6—Al4 58.88 (6)}

Al2xvii_—Ta2—Al3xi _{117.33 (3) Al1}xxiii_{—Al6—Al4 114.33 (9)}

Al2xviii_—Ta2—Al3xi _{62.67 (3) Al1—Al6—Al4 61.47 (5)}

Al3xix_—Ta2—Al3xi _{180.00 (15) Al5}xv_{—Al6—Al4 118.87 (4)}

Al2xiv_{—Ta2—Al3 117.33 (3) Al5}xxiii_{—Al6—Al4 175.03 (5)}

Al2xv_{—Ta2—Al3 62.67 (3) Al5—Al6—Al4 113.70 (4)}

Al2iv_{—Ta2—Al3 62.67 (3) Al1}xv_—Al6—Al4xv _{61.47 (5)}

Al2xvi_{—Ta2—Al3 117.33 (3) Al1}xxiii_—Al6—Al4xv _{58.88 (6)}

Al2xvii_{—Ta2—Al3 60.01 (6) Al1—Al6—Al4}xv _{114.33 (9)}

Al2xviii_{—Ta2—Al3 119.99 (6) Al5}xv_—Al6—Al4xv _{113.70 (4)}

Al3xix_{—Ta2—Al3 63.29 (2) Al5}xxiii_—Al6—Al4xv _{118.87 (4)}

Al3xi_{—Ta2—Al3 116.71 (2) Al5—Al6—Al4}xv _{175.03 (5)}

Al2xiv_—Ta2—Al3xx _{117.33 (3) Al4—Al6—Al4}xv _{65.69 (7)}

Al2xv_—Ta2—Al3xx _{62.67 (3) Al1}xv_—Al6—Al4xxiii _{114.33 (9)}

Al2iv_—Ta2—Al3xx _{119.99 (6) Al1}xxiii_—Al6—Al4xxiii _{61.47 (5)}

Al2xvi_—Ta2—Al3xx _{60.01 (6) Al1—Al6—Al4}xxiii _{58.88 (6)}

Al2xvii_—Ta2—Al3xx _{117.33 (3) Al5}xv_—Al6—Al4xxiii _{175.03 (5)}

Al2xviii_—Ta2—Al3xx _{62.67 (3) Al5}xxiii_—Al6—Al4xxiii _{113.70 (4)}

Al3xix_—Ta2—Al3xx _{63.29 (2) Al5—Al6—Al4}xxiii _{118.87 (4)}

Al3xi_—Ta2—Al3xx _{116.71 (2) Al4—Al6—Al4}xxiii _{65.69 (7)}

Al3—Ta2—Al3xx _{116.71 (2) Al4}xv_—Al6—Al4xxiii _{65.69 (7)}

Al2xiv_—Ta2—Al3v _{62.67 (3) Al1}xv_—Al6—Gdxx _{67.38 (3)}

Al2xv_—Ta2—Al3v _{117.33 (3) Al1}xxiii_—Al6—Gdxx _{60.76 (3)}

Al2iv_—Ta2—Al3v _{60.01 (6) Al1—Al6—Gd}xx _{173.80 (8)}

Al2xvi_—Ta2—Al3v _{119.99 (6) Al5}xv_—Al6—Gdxx _{61.78 (3)}

Al2xvii_—Ta2—Al3v _{62.67 (3) Al5}xxiii_—Al6—Gdxx _{68.22 (3)}

Al2xviii_—Ta2—Al3v _{117.33 (3) Al5—Al6—Gd}xx _{116.95 (7)}

Al3xix_—Ta2—Al3v _{116.71 (2) Al4—Al6—Gd}xx _{116.66 (6)}

Al3xi_—Ta2—Al3v _{63.29 (2) Al4}xv_—Al6—Gdxx _{60.55 (3)}

Al3—Ta2—Al3v _{63.29 (2) Al4}xxiii_—Al6—Gdxx _{114.94 (5)}

Al3xx_—Ta2—Al3v _{180.00 (8) Al1}xv_—Al6—Gdxxii _{60.76 (3)}

Al2xiv_—Ta2—Al3xxi _{62.67 (3) Al1}xxiii_—Al6—Gdxxii _{173.80 (8)}

Al2xv_—Ta2—Al3xxi _{117.33 (3) Al1—Al6—Gd}xxii _{67.38 (3)}

Al2iv_—Ta2—Al3xxi _{117.33 (3) Al5}xv_—Al6—Gdxxii _{68.22 (3)}

Al2xvi_—Ta2—Al3xxi _{62.67 (3) Al5}xxiii_—Al6—Gdxxii _{116.95 (7)}

Al2xvii_—Ta2—Al3xxi _{119.99 (6) Al5—Al6—Gd}xxii _{61.78 (3)}

Al2xviii_—Ta2—Al3xxi _{60.01 (6) Al4—Al6—Gd}xxii _{60.55 (3)}

Al3xix_—Ta2—Al3xxi _{116.71 (2) Al4}xv_—Al6—Gdxxii _{114.94 (5)}

Al3xi_—Ta2—Al3xxi _{63.29 (2) Al4}xxiii_—Al6—Gdxxii _{116.66 (6)}

Al3—Ta2—Al3xxi _{180.00 (8) Gd}xx_—Al6—Gdxxii _{117.43 (2)}

Al3xx_—Ta2—Al3xxi _{63.29 (2) Al1}xv_—Al6—Gdxxiv _{173.80 (8)}

Al3v_—Ta2—Al3xxi _{116.71 (2) Al1}xxiii_—Al6—Gdxxiv _{67.38 (3)}

Al6—Al1—Ta1xxii _{116.17 (5) Al1—Al6—Gd}xxiv _{60.76 (3)}

Al6—Al1—Al4xxiii _{62.82 (6) Al5}xv_—Al6—Gdxxiv _{116.95 (7)}

supporting information

sup-8

Acta Cryst. (2003). E59, i147–i148

Al6—Al1—Al2xxiii _{129.31 (7) Al5—Al6—Gd}xxiv _{68.22 (3)}

Ta1xxii_—Al1—Al2xxiii _{59.08 (4) Al4—Al6—Gd}xxiv _{114.94 (5)}

Al4xxiii_—Al1—Al2xxiii _{163.84 (7) Al4}xv_—Al6—Gdxxiv _{116.66 (6)}

Al6—Al1—Al7xv _{161.66 (7) Al4}xxiii_—Al6—Gdxxiv _{60.55 (3)}

Ta1xxii_—Al1—Al7xv _{55.62 (4) Gd}xx_—Al6—Gdxxiv _{117.43 (2)}

Al4xxiii_—Al1—Al7xv _{102.30 (7) Gd}xxii_—Al6—Gdxxiv _{117.43 (2)}

Al2xxiii_—Al1—Al7xv _{63.42 (7) Ta1}xxxiii_—Al7—Ta1xxiv _{173.89 (12)}

Al6—Al1—Al4 61.41 (6) Ta1xxxiii_—Al7—Al7xx _{56.95 (6)}

Ta1xxii_{—Al1—Al4 57.89 (5) Ta1}xxiv_—Al7—Al7xx _{116.95 (6)}

Al4xxiii_{—Al1—Al4 67.06 (8) Ta1}xxxiii_—Al7—Al7xi _{116.95 (6)}

Al2xxiii_{—Al1—Al4 107.51 (7) Ta1}xxiv_—Al7—Al7xi _{56.95 (6)}

Al7xv_{—Al1—Al4 103.93 (5) Al7}xx_—Al7—Al7xi _60.0

Al6—Al1—Al3xxiv _{106.81 (7) Ta1}xxxiii_—Al7—Al1xxxiv _{124.62 (7)}

Ta1xxii_—Al1—Al3xxiv _{120.11 (6) Ta1}xxiv_—Al7—Al1xxxiv _{60.07 (4)}

Al4xxiii_—Al1—Al3xxiv _{129.28 (7) Al7}xx_—Al7—Al1xxxiv _{146.05 (4)}

Al2xxiii_—Al1—Al3xxiv _{61.65 (6) Al7}xi_—Al7—Al1xxxiv _{107.17 (5)}

Al7xv_—Al1—Al3xxiv _{90.87 (5) Ta1}xxxiii_—Al7—Al1xxxv _{60.07 (4)}

Al4—Al1—Al3xxiv _{155.49 (6) Ta1}xxiv_—Al7—Al1xxxv _{124.62 (7)}

Al6—Al1—Gdxxiv _{68.21 (3) Al7}xx_—Al7—Al1xxxv _{107.17 (5)}

Ta1xxii_—Al1—Gdxxiv _{168.37 (6) Al7}xi_—Al7—Al1xxxv _{146.05 (4)}

Al4xxiii_—Al1—Gdxxiv _{64.28 (4) Al1}xxxiv_—Al7—Al1xxxv _{99.02 (10)}

Al2xxiii_—Al1—Gdxxiv _{127.64 (6) Ta1}xxxiii_—Al7—Al1xxiii _{124.62 (7)}

Al7xv_—Al1—Gdxxiv _{116.68 (6) Ta1}xxiv_—Al7—Al1xxiii _{60.07 (4)}

Al4—Al1—Gdxxiv _{121.26 (6) Al7}xx_—Al7—Al1xxiii _{146.05 (4)}

Al3xxiv_—Al1—Gdxxiv _{66.03 (5) Al7}xi_—Al7—Al1xxiii _{107.17 (5)}

Al6—Al1—Gdxxii _{63.88 (3) Al1}xxxiv_—Al7—Al1xxiii _{65.53 (7)}

Ta1xxii_—Al1—Gdxxii _{69.92 (3) Al1}xxxv_—Al7—Al1xxiii _{64.60 (7)}

Al4xxiii_—Al1—Gdxxii _{116.97 (6) Ta1}xxxiii_—Al7—Al1xxxvi _{60.07 (4)}

Al2xxiii_—Al1—Gdxxii _{68.60 (5) Ta1}xxiv_—Al7—Al1xxxvi _{124.62 (7)}

Al7xv_—Al1—Gdxxii _{120.04 (6) Al7}xx_—Al7—Al1xxxvi _{107.17 (5)}

Al4—Al1—Gdxxii _{59.34 (4) Al7}xi_—Al7—Al1xxxvi _{146.05 (4)}

Al3xxiv_—Al1—Gdxxii _{96.38 (4) Al1}xxxiv_—Al7—Al1xxxvi _{64.60 (7)}

Gdxxiv_—Al1—Gdxxii _{120.53 (4) Al1}xxxv_—Al7—Al1xxxvi _{65.53 (7)}

Ta2xxii_—Al2—Ta1xx _{166.93 (8) Al1}xxiii_—Al7—Al1xxxvi _{99.02 (10)}

Ta2xxii_—Al2—Al1xxv _{123.10 (4) Ta1}xxxiii_—Al7—Al2xviii _{57.98 (4)}

Ta1xx_—Al2—Al1xxv _{60.24 (4) Ta1}xxiv_—Al7—Al2xviii _{120.17 (5)}

Ta2xxii_—Al2—Al1xv _{123.10 (4) Al7}xx_—Al7—Al2xviii _{61.10 (5)}

Ta1xx_—Al2—Al1xv _{60.24 (4) Al7}xi_—Al7—Al2xviii _{91.94 (6)}

Al1xxv_—Al2—Al1xv _{110.73 (8) Al1}xxxiv_—Al7—Al2xviii _{152.40 (9)}

Ta2xxii_—Al2—Al3xxvi _{62.99 (6) Al1}xxxv_—Al7—Al2xviii _{56.68 (4)}

Ta1xx_—Al2—Al3xxvi _{130.08 (8) Al1}xxiii_—Al7—Al2xviii _{90.20 (4)}

Al1xxv_—Al2—Al3xxvi _{96.19 (6) Al1}xxxvi_—Al7—Al2xviii _{109.48 (6)}

Al1xv_—Al2—Al3xxvi _{96.19 (6) Ta1}xxxiii_—Al7—Al2xxix _{120.17 (5)}

Ta2xxii_—Al2—Al3xxiii _{61.50 (5) Ta1}xxiv_—Al7—Al2xxix _{57.98 (4)}

Ta1xx_—Al2—Al3xxiii _{121.44 (5) Al7}xx_—Al7—Al2xxix _{91.94 (6)}

Al1xxv_—Al2—Al3xxiii _{61.85 (5) Al7}xi_—Al7—Al2xxix _{61.10 (5)}

Al1xv_—Al2—Al3xxiii _{156.05 (9) Al1}xxxiv_—Al7—Al2xxix _{56.68 (4)}

Ta2xxii_—Al2—Al3xxii _{61.50 (5) Al1}xxiii_—Al7—Al2xxix _{109.48 (6)}

Ta1xx_—Al2—Al3xxii _{121.44 (5) Al1}xxxvi_—Al7—Al2xxix _{90.20 (4)}

Al1xxv_—Al2—Al3xxii _{156.05 (9) Al2}xviii_—Al7—Al2xxix _{149.92 (12)}

Al1xv_—Al2—Al3xxii _{61.85 (5) Ta1}xxxiii_—Al7—Al2xxxvii _{57.98 (4)}

Al3xxvi_—Al2—Al3xxii _{63.86 (5) Ta1}xxiv_—Al7—Al2xxxvii _{120.17 (5)}

Al3xxiii_—Al2—Al3xxii _{114.73 (10) Al7}xx_—Al7—Al2xxxvii _{61.10 (5)}

Ta2xxii_—Al2—Al7xxiii _{114.38 (6) Al7}xi_—Al7—Al2xxxvii _{91.94 (6)}

Ta1xx_—Al2—Al7xxiii _{54.79 (3) Al1}xxxiv_—Al7—Al2xxxvii _{90.20 (4)}

Al1xxv_—Al2—Al7xxiii _{107.08 (7) Al1}xxxv_—Al7—Al2xxxvii _{109.48 (6)}

Al1xv_—Al2—Al7xxiii _{59.90 (6) Al1}xxiii_—Al7—Al2xxxvii _{152.40 (9)}

Al3xxvi_—Al2—Al7xxiii _{151.08 (5) Al1}xxxvi_—Al7—Al2xxxvii _{56.68 (4)}

Al3xxiii_—Al2—Al7xxiii _{142.93 (8) Al2}xviii_—Al7—Al2xxxvii _{109.29 (7)}

Al3xxii_—Al2—Al7xxiii _{89.08 (6) Al2}xxix_—Al7—Al2xxxvii _{62.29 (7)}

Ta2xxii_—Al2—Al7xxvii _{114.38 (6) Ta1}xxxiii_—Al7—Al2xv _{120.17 (5)}

Ta1xx_—Al2—Al7xxvii _{54.79 (3) Ta1}xxiv_—Al7—Al2xv _{57.98 (4)}

Al1xxv_—Al2—Al7xxvii _{59.90 (6) Al7}xx_—Al7—Al2xv _{91.94 (6)}

Al1xv_—Al2—Al7xxvii _{107.08 (7) Al7}xi_—Al7—Al2xv _{61.10 (5)}

Al3xxvi_—Al2—Al7xxvii _{151.08 (5) Al1}xxxiv_—Al7—Al2xv _{109.48 (6)}

Al3xxiii_—Al2—Al7xxvii _{89.08 (6) Al1}xxxv_—Al7—Al2xv _{90.20 (4)}

Al3xxii_—Al2—Al7xxvii _{142.93 (8) Al1}xxiii_—Al7—Al2xv _{56.68 (4)}

Al7xxiii_—Al2—Al7xxvii _{57.80 (10) Al1}xxxvi_—Al7—Al2xv _{152.40 (9)}

Ta2xxii_—Al2—Gdxx _{124.85 (6) Al2}xviii_—Al7—Al2xv _{62.29 (7)}

Ta1xx_—Al2—Gdxx _{68.22 (4) Al2}xxix_—Al7—Al2xv _{109.29 (7)}

Al1xxv_—Al2—Gdxx _{63.82 (5) Al2}xxxvii_—Al7—Al2xv _{149.92 (12)}