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Diaqua-bis-(nitrato-?(2)O,O')bis-(pyrazine-2-carboxamide-?N(4))cadmium-pyrazine-2-carboxamide (1/2).

ABSTRACT: In the title compound, [Cd(NO(3))(2)(C(5)H(5)N(3)O)(2)(H(2)O)(2)]·2C(5)H(5)N(3)O, the Cd(II) cation is located on a twofold rotation axis and is coordinated by two pyrazine-2-carboxamide ligands and two water mol-ecules and chelated by two nitrate anions in a distorted square-anti-prismatic geometry. Extensive inter-molecular N-H?O, N-H?N, O-H?O and O-H?N hydrogen bonds, as well as weak inter-molecular C-H?N and C-H?O inter-actions occur in the crystal. ?-? stacking between between pyrazine rings of coordinating ligands and lattice molecules [centroid-centroid distance = 3.5669?(14)?Å] may further stabilize the structure.

SUBMITTER: Shirvan SA

PROVIDER: S-EPMC3393246 | biostudies-literature | 2012 Jul

REPOSITORIES: biostudies-literature

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Diaqua-bis-(nitrato-κ(2)O,O')bis-(pyrazine-2-carboxamide-κN(4))cadmium-pyrazine-2-carboxamide (1/2).

Shirvan Sadif A SA Haydari Dezfuli Sara S

Acta crystallographica. Section E, Structure reports online 20120630 Pt 7

In the title compound, [Cd(NO(3))(2)(C(5)H(5)N(3)O)(2)(H(2)O)(2)]·2C(5)H(5)N(3)O, the Cd(II) cation is located on a twofold rotation axis and is coordinated by two pyrazine-2-carboxamide ligands and two water mol-ecules and chelated by two nitrate anions in a distorted square-anti-prismatic geometry. Extensive inter-molecular N-H⋯O, N-H⋯N, O-H⋯O and O-H⋯N hydrogen bonds, as well as weak inter-molecular C-H⋯N and C-H⋯O inter-actions occur in the crystal. π-π stacking between between pyrazine ring ...[more]

PMID: 22807706

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