RING MOTIFS
Chain and ring motifs in 4 carboxyphenylammonium trifluoroacetate
... , the carboxyl plane of the cation is twisted out of the plane of the aromatic ring. The cations form C(8) chains through ’head-to-tail’ N— H O hydrogen-bonding interactions. These chains form a sheet-like ...
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Tetra and penta vicinally fluorinated cyclohexane ring motifs
... This study has demonstrated a method for the preparation of a new type of 2,3,5,6- tetrafluorocyclohexane amine motifs. Through a five-step synthesis, where diepoxidation furnished the three diastereoisomers ...
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4 {[4 (Dimethylamino)benzylidene]amino}benzenesulfonamide
... (16) ring motifs. These dimers are linked by N— H O hydrogen bonds, between the sulfonamide nitrogen-H atom and one sulfonamide O atom, forming sheets lying parallel to (100). Within the sheets there are ...
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2 [4 (2 {5 tert Butyl 2 chloro 3 [2 (3 pentyl 1,3 benzothiazol 2 ylidene)ethylidene]cyclohex 1 enyl}ethenyl) 3 cyano 5,5 dimethylfuran 2 ylidene]malononitrile
... donor and acceptor ends of the molecule, related to the additional intramolecular C—H S interaction. In the title compound, the molecules pack into dimeric units about centres of symmetry utilizing weak C—H N(cyano) and ...
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Crystal structure and Hirshfeld surface analysis of dimethyl (1R*,3aS*,3a1R*,6aS*,9R*,9aS*) 3a1,5,6,9a tetrahydro 1H,4H,9H 1,3a:6a,9 diepoxyphenalene 2,3 dicarboxylate
... system containing four five-membered rings (two dihydrofuran and two tetrahydrofuran) and one six-membered ring (cyclohexane). The five-membered dihydrofuran and tetrahydrofuran rings adopt envelope conformations, ...
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Bis(nicotinamidium) bis[(2R,3R) tartrate] 1 25 hydrate: cations incorporated into hydrogen bonded arrays of anions and water molecules
... carboxamide planes of the cations are twisted relative to the pyridine rings. The crystal structure is stabilized by an intricate three-dimensional network of N—H O and O—H O hydrogen bonds. Interestingly, the anions and ...
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Crystal structures and Hirshfeld surface analysis of 2 (adamantan 1 yl) 5 (4 fluorophenyl) 1,3,4 oxadiazole and 2 (adamantan 1 yl) 5 (4 chlorophenyl) 1,3,4 oxadiazole
... halogenophenyl ring, [X = F (I), Cl (II)], in position 5 on the central 1,3,4- oxadiazole ...halogenophenyl ring in comparison with the central five- membered ring differs ...
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(Z) 6 {2 [(E) 2,4 Dihydroxybenzylideneamino]phenylaminomethylene} 3 hydroxycyclohexa 2,4 dienone toluene solvate
... hydrogen bonds generate S(6) ring motifs, whereas intra- molecular N—H N hydrogen bonds generate S(5) ring motifs. In the crystal structure, O—H O hydrogen bonds and weak C—H O interactions ...
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Crystal structure and Hirshfeld surface analysis of 1 benzyl 3 (prop 2 yn 1 yl) 2,3 dihydro 1H 1,3 benzodiazol 2 one
... (27) ring motifs, into a network consisting of rectangular layers parallel to the bc plane which are also stacked along the a-axis direction being associated through C—H (ring) inter- ...
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Crystal structure and Hirshfeld surface analysis of 2 [(1,3 benzoxazol 2 yl)sulfanyl] N (2 methoxyphenyl)acetamide
... C7—S1 [1.740 (4) A ˚ ] and C8—S1 [1.812 (4) A˚] bond lengths are comparable with those reported for three similar struc- tures, viz. 2-[(4,6-diaminopyrimidin-2-yl)sulfanyl]-N-(2-meth- ylphenyl)acetamide (1.763 and 1.805 ...
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Crystal structures of two new carbazole derivatives: 12 (4 nitrophenyl) 7 phenylsulfonyl 7H benzofuro[2,3 b]carbazole and 2 methyl 4 (4 nitrophenyl) 9 phenylsulfonyl 9H thieno[2,3 b]carbazole
... The molecular structure of compound (I), showing the atom labelling. Displacement ellipsoids are drawn at the 30% probability level. Intramolecular C2—H2 O1 and C9—H9 O2 hydrogen bonds, which generate two S(6) ...
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Inversion dimers dominate the crystal packing in the structure of trimethyl citrate (trimethyl 2 hydroxypropane 1,2,3 tricarboxylate)
... Simpson, University of Otago, New Zealand Keywords: crystal structure; trimethyl citrate; hydrogen bonds; inversion dimers; ring motifs.. CCDC reference: 1500726 Supporting information: [r] ...
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Dimethyl [hydroxy(2 nitrophenyl)methyl]phosphonate
... Diethyl [hydroxy(2-nitrophenyl)methyl]phosphonate (II) (Chen et al., 2008) have also been published which have similar coordination around the C-atom having α-hydroxy group. But it is observed that the change of ...
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Enrofloxacinium oxalate
... 0.563 (2)Å,4.5 (2)° and 172 (3)°, respectively; (Cremer & Pople, 1975). Bond lengths are in normal ranges (Allen et al., 1987). The dihedral angles between the mean planes of the cyclopropyl ring and the ...
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Pyrimethaminium 2 {[4 (trifluoromethyl)phenyl]sulfanyl}benzoate dimethyl sulfoxide monosolvate
... In the cation, the dihedral angle between the mean plane of the pyrimidinium and the 4-chlorophenyl ring is 77.2 (5)°. In the anion, the mean planes of the two phenyl rings are twisted with respect to each other ...
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Crystal structure of diethyl 2 [(2 sulfanylquinolin 3 yl)methylidene]malonate
... quinoline ring system is nearly planar, with a maximum deviation of ...benzene ring of quinoline, Cg(2) [C10—C15], and pyridine, Cg(1) [N6//C7–C11], [shortest centroid–centroid distance = ...(10) ...
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Crystal structures of two hydrazinecarbothioamide derivatives: (E) N ethyl 2 [(4 oxo 4H chromen 3 yl)methylidene]hydrazinecarbothioamide hemihydrate and (E) 2 [(4 chloro 2H chromen 3 yl)methylidene] N phenylhydrazinecarbothioamide
... (22) graph-set ring motifs. There are also – [inter-centroid distances = 3.5648 (14) and 3.6825 (15) A ˚ ] interactions present, leading to the formation of columns along the c-axis direction. In the ...
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Piet Mondrian on the Principles of Neo–Plasticism
... plant motifs and symbols provides an appropriate backdrop to recover the mythological themes and cultural environment of the peoples of southern Iran plateau from pre-historic to historical ...
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Use of a Yeast TRNase Killer Toxin to Diagnose Kti12 Motifs Required for TRNA Modification by Elongator
... Given that KTI12 deletions cause Elongator defects [6,24,36], we analysed a previously isolated pool of zymocin resistant kti12 mutants [5] in greater detail (Figure 1A). Single amino acid substitutions within ...
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Network Motifs May Improve Quality Assessment of Text Documents
... As a second approach, we directly evaluated the correlation of the motif signatures to the quality la- bel of the corresponding text. Since our variable for quality is dichotomous, we use the point biserial cor- relation ...
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