Pyrazine-2
![Poly[aquabis(μ pyrazine 2 carboxylato)nickel(II)]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==)
Poly[aquabis(μ pyrazine 2 carboxylato)nickel(II)]
... In recent years, carboxylic acids have been widely used as polydentate ligands which can coordinate to transition or rare earth ions yielding complexes with interesting properties that are useful in materials science ...
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Dimethylbis(pyrazine 2 carboxylato κ2N1,O)tin(IV)
... g, 2 mmol) in methanol (10 ml) to produce dimethyltin dimethoxide and sodium ...then pyrazine-2-carboxylic acid (0.248 g, 2 mmol) in methanol (20 ml) was added to the ...
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The silver(I) nitrate complex of the ligand N (pyridin 2 ylmethyl)pyrazine 2 carboxamide: a metal–organic framework (MOF) structure
... tetrakis-substituted pyrazine ligands, one-, two- and three-dimensional coordination polymers can be formed (Assoumatine & Stoeckli-Evans, ...mono-substituted pyrazine carboxamide ligand, N- ...
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Bis[5 (pyridin 2 yl)pyrazine 2 carbonitrile κ2N4,N5]silver hexafluoridophosphate
... The coordination chemistry of pyridyl based ligands has intensively developed in the passed decades (Boudalis et al., 2003; Dunne et al., 1997; Wang et al.,2009).The devious rigid and/or flexible pyridyl based ligands ...
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Diaquabis[5 (2 pyrazin 2 yl)tetrazolato]copper(II)–pyrazine 2 carbonitrile (1/2)
... The compound was prepared under solvothermal conditions, by a mixture of 0.065 g (1 mmol) of sodium azide, 2 ml of pyrazine-2-carbonitrile and 0.255 g (1 mmol) of copper fluoborate hydrate according ...
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Crystal structures of N (pyridin 2 ylmethyl)pyrazine 2 carboxamide (monoclinic polymorph) and N (pyridin 4 ylmethyl)pyrazine 2 carboxamide1
... A search of the Cambridge Structural Database (Version 5.35, last update November 2013; Allen, 2002) indicated the presence of 282 structures containing the pyrazine-2-carbox- amide unit. 81 of these ...
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Synthesis and Characterization of Pyrazine-2-Carbohydrazide Derivatives as Antimicrobial Agents
... different pyrazine carbohydrazide derivatives so as to increase log P value, and thereby to increase the intracellular concentration in order to decrease the resistance developed due to decreased intracellular ...
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N′ [(E) 4 Bromobenzylidene]pyrazine 2 carbohydrazide
... The title compound was prepared by the condensation of equimolar ratio of pyrazine-2-carbohydrazide (0.50 g, 3.6 mmol) and 4-bromobenzaldehyde (0.67 g, 3.6 mmol) in methanol by the reflux of 5 h. The ...
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N′ [(E) 1 (2 Hydroxyphenyl)ethylidene]pyrazine 2 carbohydrazide
... The title compound crystallized with two independent molecules (A and B) in the asymmetric unit, Fig. 1. In molecule A, the 1-(2-hydroxyphenyl)ethanone (C1—C8/O1) moiety and the ...
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Tetraamminebis(pyrazine 2 carboxylato κN4)copper(II)
... symmetry 2/m and has distorted elongated octahedral coordination geometry defined by four N atoms from ammonia molecules and another two N atoms from two pyrazine-2-carboxylate ...
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Synthesis of N (2 nitrophenyl) pyrazine 2 carboxamide and N (4 nitrophenyl) pyrazine 2 carboxamide and evaluation of their antimycobacterial properties using in vitro and in silico techniques
... N-(2-nitrophenyl) pyrazine-2-carboxamide(compound 6) found active with 32 ...N-(4-nitrophenyl) pyrazine-2-carboxamide (compound 7) reported ...
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N′ [(E) 3 Bromobenzylidene]pyrazine 2 carbohydrazide
... of pyrazine-2-carbohydrazide and 3-bromobenzaldehyde moieties are close to planar with ...Fig. 2) forming S(5) ring ...Fig. 2) forming C (6) ...
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catena Poly[[(pyrazine 2 carboxamide κN4)copper(I)] μ3 iodido]
... Pyrazine-2-carboxamide (usually pyrazinamide, in medical literature abbreviated as PZA) is a drug used for tuberculosis treatment in the last 60 years. Nowadays the possibility of increasing the activity of ...
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Diaquatetrakis(pyrazine 2 carboxylato κ2O,N)thorium(IV) trihydrate
... Each acid ligand is almost coplanar since the relevant r.m.s. deviations from the mean plane are 0.027 (1), 0.049 (1), 0.073 (1) and 0.040 (1) Å for the ligands PYR1, PYR2, PYR3 and PYR4, respectively. The dihedral ...
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catena Poly[[diaquarubidium(I)](μ2 3 carboxypyrazine 2 carboxylato)(μ2 pyrazine 2,3 dicarboxylic acid)]
... hydrogen pyrazine-2,3-dicarboxylate anion, one pyrazine-2,3- dicarboxylic acid molecule and two water molecules. This formulation is repeated twice in the asymmetric unit as the rubidium cation lies on an ...
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Poly[diaqua μ oxalato μ pyrazine 2 carboxylato lanthanum(III)]
... The design, synthesis, characterization, and properties of supramolecular networks formed by using functionalized organic molecules as bridges between metal centers are of great interest(Eddaoudi et al., 2001; Rizk et ...
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Spectroscopic investigations of a substituted amide of pyrazine-2-carboxylic acid – C16H18N3O
... of pyrazine-2-carboxylic acid was prepared and the IR spectrum is recorded and ...the pyrazine ring of the title compound in comparison with the corresponding bonds of ...
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catena Poly[[aqua(pyrazine 2 carboxylato)iron(II)] μ pyrazine 2 carboxylato]
... and pyrazine-2-carboxylic ...two pyrazine-2-carboxylate anions and one aqua ...bridging pyrazine-2-carboxylate ligands, leading to a polymeric structure with zigzag-chains ...
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Bis(pyrazine 2 carboxamide)bis(trifluoromethanesulfonato)copper(II) monohydrate
... the pyrazine-2-carboxamide (pyca) ligand offers interesting possibilities in crystal engineering, owing to its chelating properties, in addition to its potential as a linker molecule between metal ...Cu ...
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Diaquabis(pyrazine 2 carboxylato κ2N1,O)manganese(II) dihydrate
... Mn1 0.0141 (2) 0.0262 (2) 0.0330 (3) 0.00080 (19) 0.00120 (16) 0.0019 (2) C2 0.0266 (10) 0.0339 (12) 0.0354 (12) −0.0008 (10) 0.0058 (9) 0.0064 (10) O1 0.0273 (8) 0.0382 (10) 0.0439 (10) −0.0004 (7) ...
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