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Diaqua-bis-(pyridine-2-carboxyl-ato-κN,O)manganese(II) dimethyl-formamide hemisolvate.

ABSTRACT: There are two crystallographically independent complex mol-ecules with very similar geometries in the unit cell of the title compound, [Mn(C(6)H(4)NO(2))(2)(H(2)O)(2)]·0.5C(3)H(7)NO. The central ion is situated in a distorted octa-hedral environment of two N- and four O-donor atoms from two pyridine-2-carboxyl-ate ligands and two cis-disposed water mol-ecules. The carboxyl-ate ligands are coordinated in a chelate fashion with the formation of two five-membered rings. In the crystal, the complex mol-ecules are connected by O-H⋯O hydrogen bonds between the coordinated water mol-ecules and the uncoordinated carboxyl-ate O atoms, thus forming hydrogen-bonded walls disposed perpendicularly to the bc plane.

SUBMITTER: Golenya IA

PROVIDER: S-EPMC3246979 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Diaqua-bis-(4-carb-oxy-2-ethyl-1H-imidazole-5-carboxyl-ato-κN,O)manganese(II) N,N-dimethyl-formamide disolvate.

Project description:In the title compound, [Mn(C(7)H(7)N(2)O(4))(2)(H(2)O)(2)]·2C(3)H(7)NO, the central Mn(II) ion, located on an inversion center, is hexa-coordinated by four O atoms from two water mol-ecules and two carboxyl-ate groups, and two N atoms from two 4-carb-oxy-2-ethyl-1H-imidazole-5-carboxyl-ate anions in a slightly distorted octa-hedral environment. The complex mol-ecules and solvent mol-ecules are connected via N-H⋯O and O-H⋯O hydrogen bonds into a two-dimensional polymeric structure parallel to (001).

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Project description:In the title compound, [Zn(C(7)H(6)NO(2))(2)(H(2)O)(2)], the Zn atom (site symmetry ) adopts a distorted trans-ZnN(2)O(4) octa-hedral coordination arising from two N,O-bidentate 5-methyl-pyridine-2-carboxyl-ate ligands and two water mol-ecules. In the crystal structure, mol-ecules form a layered network linked by O-H⋯O hydrogen bonds.

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Diaqua-bis(5-carb-oxy-2-methyl-1H-imidazole-4-carboxyl-ato-κN,O)cobalt(II) dimethyl-formamide disolvate.

Project description:In the title compound, [Co(C(6)H(5)N(2)O(4))(2)(H(2)O)(2)]·2C(3)H(7)NO, the Co(II) ion lies on an inversion center and adopts a slightly distorted CoN(2)O(4) octa-hedral geometry binding two bidentate chelating 5-carb-oxy-2-methyl-1H-imidazole-4-carboxyl-ate (H(2)MIDA(-)) monoanionic ligands and two axial aqua ligands. In the crystal structure, inter-molecular O-H⋯O hydrogen bonds link neighboring mol-ecules, generating a two-dimensional framework containing eight-membered H(4)O(4) rings. In addition, the dimethyl-formamide solvent mol-ecules are hydrogen bonded to the two-dimensional framework via the NH groups of the H(2)MIDA(-) ligands.

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Project description:In the title compound, [Mn(C(5)H(4)N(3)O(2))(2)(H(2)O)(2)]·H(2)O, the Mn(II) cation, located on a twofold rotation axis, is N,O-chelated by two 3-amino-pyrazine-2-carboxyl-ate anions and coordin-ated by two water mol-ecules in a distorted octa-hedral geometry. The uncoordinated water mol-ecules lies on a twofold rotation axis. Adjacent mol-ecules are linked by O-H⋯O and N-H⋯O hydrogen bonds into a three-dimensional network motif.

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Project description:In the crystal structure of the title compound, [Zn(C(8)H(9)N(2)O(4))(2)(H(2)O)(2)]·2C(3)H(7)NO, the Zn(II) atom is coordinated by two N,O-bidentate 2-propyl-1H-imidazole-4,5-dicarboxyl-ate anions and two water mol-ecules in a distorted octa-hedral environment. The asymmetric unit consists of one Zn(II) atom located on a center of inversion as well as one anion, one water mol-ecule and one additional dimethyl-formamide mol-ecule that occupy general positions. Between the carboxyl and the carboxyl-ate group an intra-molecular hydrogen bond is found in which the hydroxy H atom is disordered. Disorder is also found for the H atoms of one of the three methyl groups. In the crystal structure, additional inter-molecular N-H⋯O and O-H⋯O hydrogen bonding is found.

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Di-aqua-bis-(pyridine-2-carboxyl-ato-κ(2) N,O)zinc di-methyl-formamide hemisolvate.

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| S-EPMC3793690 | biostudies-literature

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