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Diaqua-(5-methyl-pyrazine-2-carboxyl-ato-κN,O)iron(II).

ABSTRACT: In the neutral title complex, [Fe(C(6)H(5)N(2)O(2))(2)(H(2)O)(2)], the coordination geometry aound the Fe(II) atom, which lies on an inversion centre, is distorted octa-hedral comprising two N atoms and two O atoms from two 5-methyl-pyrazine-2-carboxyl-ate ligands, and two water mol-ecules. The crystal structure is stabilized by a network of O-H⋯O hydrogen bonds, resulting in a two-dimensional supra-molecular structure.

SUBMITTER: Fan G

PROVIDER: S-EPMC2968011 | biostudies-literature | 2008 Dec

REPOSITORIES: biostudies-literature

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Diaqua-(5-methyl-pyrazine-2-carboxyl-ato-κN,O)iron(II).

Fan Guang G Sun Jia-Juan JJ Zhang Jun-Cai JC Ma Zhan-Ying ZY Gao Sheng-Li SL

Acta crystallographica. Section E, Structure reports online 20081220 Pt 1

In the neutral title complex, [Fe(C(6)H(5)N(2)O(2))(2)(H(2)O)(2)], the coordination geometry aound the Fe(II) atom, which lies on an inversion centre, is distorted octa-hedral comprising two N atoms and two O atoms from two 5-methyl-pyrazine-2-carboxyl-ate ligands, and two water mol-ecules. The crystal structure is stabilized by a network of O-H⋯O hydrogen bonds, resulting in a two-dimensional supra-molecular structure. ...[more]

PMID: 21581473

Similar Datasets

Diaqua-bis-(5-methyl-pyrazine-2-carboxyl-ato-κN,O)cadmium.

Project description:In the title compound, [Cd(C(6)H(5)N(2)O(2))(2)(H(2)O)(2)], the Cd(II) ion is coordinated in a severely distorted octa-hedral geometry. The N atoms are cis to each other, while the water O atoms and ligand O atoms are mutually trans. The crystal structure is stabilized by a network of O-H⋯O, O-H⋯N and C-H⋯O hydrogen bonds and π-π stacking inter-actions [centroid-centroid distances = 3.730 (3) and 3.652 (3) Å] between the 5-methyl-pyrazine-2-carboxyl-ate ligands. The structure is isotypic with the manganese analog.

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Diaqua-bis(pyrazine-2-carboxyl-ato-κN,O)manganese(II) dihydrate.

Project description:In the title compound, [Mn(C(5)H(3)N(2)O(2))(2)(H(2)O)(2)]·2H(2)O, the Mn(II) atom, lying on an inversion centre, has a distorted octa-hedral environment and the molecules are linked by O-H⋯O and N-H⋯O hydrogen bonds to form a three-dimensional supra-molecular structure.

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Bis(3-amino-pyrazine-2-carboxyl-ato-κN,O)diaqua-manganese(II).

Project description:The Mn(II) atom in the title compound, [Mn(C(5)H(4)N(3)O(2))(2)(H(2)O)(2)], exhibits an octa-hedral geometry comprising the two O atoms and two N atoms from two 3-amino-pyrazine-2-carboxyl-ate ligands, which act as chelating ligands, and two water mol-ecules. An intra-molecular N-H⋯O hydrogen bond occurs. In the crystal, N-H⋯O, O-H⋯N and O-H⋯O hydrogen bonds link adjacent mol-ecules into a three-dimensional network. The mol-ecule lies on a twofold rotation axis.

| S-EPMC2983285 | biostudies-literature

Diaqua-bis(pyridine-2-carboxyl-ato-κN,O)iron(II).

Project description:The Fe(II) atom in the title complex, [Fe(C(6)H(4)NO(2))(2)(H(2)O)(2)], exists in a distorted octa-hedral coordination geometry defined by two O and two N atoms from two pyridine-2-carboxyl-ate ligands and two O atoms of two water mol-ecules. In the crystal structure, mol-ecules are linked into a three-dimensional framework by O-H⋯O hydrogen bonds.

| S-EPMC2968519 | biostudies-literature

A polymorph of diaqua-bis(pyrazine-2-carboxyl-ato-κN,O)copper(II).

Project description:The title compound, [Cu(C(5)H(3)N(2)O(2))(2)(H(2)O)(2)], is a new polymorph of the previously reported compound [Klein et al. (1982 ▶). Inorg. Chem.21, 1891-1897]. The Cu(II) atom, lying on an inversion center, is coordinated by two N atoms and two O atoms from two pyrazine-2-carboxyl-ate ligands and by two water mol-ecules in a distorted octa-hedral geometry with the water mol-ecules occupying the axial sites. Inter-molecular O-H⋯O, O-H⋯N and C-H⋯O hydrogen bonds connect the complex mol-ecules into a two-dimensional layer parallel to (10), whereas the previously reported polymorph exhibits a three-dimensional hydrogen-bonded network.

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Bis(3-amino-pyrazine-2-carboxyl-ato-κN,O)diaqua-manganese(II) mono-hydrate.

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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Diaqua-bis-(5-methyl-pyrazine-2-carboxyl-ato-?N,O)cobalt(II) dihydrate.

Project description:In the title complex, [Co(C(6)H(5)N(2)O(2))(2)(H(2)O)(2)]·2H(2)O, the coordination geometry of the Co(2+) cation is distorted octa-hedral, with two N atoms and two O atoms from two 5-methyl-pyrazine-2-carboxyl-ate ligands in the equatorial plane. The two remaining coordination sites are occupied by two water mol-ecules. In addition, there are two uncoordinated water mol-ecules in the asymmetric unit. The crystal structure is stabilized by a network of O-H?O and O-H?N hydrogen-bonding inter-actions, forming a three-dimensional structure.

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Diaqua-bis(5-methyl-pyridine-2-carboxyl-ato-κN,O)zinc(II).

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.

| S-EPMC2968010 | biostudies-literature

Poly[aqua-(μ-pyrazine-2-carboxyl-ato-κN,O:O)(μ-pyrazine-2-carboxyl-ato-κN,O:O')lead(II)].

Project description:The polymeric structure of the title compound, [Pb(C(5)H(3)N(2)O(2))(2)(H(2)O)](n), is built up from centrosymmetric [Pb(C(5)H(3)N(2)O(2))(2)(H(2)O)](2) dimers, which are bridged by ligand carboxyl-ate O atoms. The Pb(II) ion adopts an irregular PbN(2)O(5) coordination polyhedron; it is chelated by one N,O-bidentate ligand and also bonds to a water O atom. A second N,O-bidentate ligand forms the dimer bridge and another bridging O atom from a nearby dimer also bonds to the Pb(II) ion, leading to layers propagating in (100). A network of O-H⋯O hydrogen bonds operates between water O atoms (donors) and carboxyl-ate O atoms (acceptors).

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catena-Poly[[[diaqua-nickel(II)]-μ-pyrazine-2-carboxyl-ato-silver(I)-μ-pyrazine-2-carboxyl-ato] nitrate dihydrate].

Project description:In the polymeric complex of the title compound, {[AgNi(C(5)H(3)N(2)O(2))(2)(H(2)O)(2)]NO(3)·2H(2)O}(n), the Ag(I) ion displays an angular coordination geometry with two N atoms from pyrazine-2-carboxyl-ate ligands, and the Ni(II) ion is hexa-coordinated by two O atoms from two water mol-ecules, two O and two N atoms from pyrazine-2-carboxyl-ate ligands in a distorted octa-hedral geometry. In the crystal, the Ag(I) and Ni(II) ions lie on a mirror plane and an inversion centre, respectively. The complex chains, the nitrate ions and the uncoordinated water mol-ecules are linked together through O-H⋯O hydrogen bonds and weak Ag⋯O inter-actions [2.619 (17)-2.749 (17) Å] into a three-dimensional network.

| S-EPMC3344408 | biostudies-literature

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