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Di-?-acetato-?-aqua-bis-[acetatobis(1H-benzimidazole)cobalt(II)].

ABSTRACT: In the title compound, [Co(2)(C(2)H(3)O(2))(4)(C(7)H(6)N(2))(4)(H(2)O)], the half-mol-ecule in the asymmetric unit is completed by a crystallographic twofold rotation axis to give the full mol-ecule. The Co(II) ions are approximately octahedrally coordinated with a cis-N(2)O(4) coordination sphere. The compound features intra-molecular O-H?O hydrogen bonds between the non-bridging acetate groups and the bridging water mol-ecule, and inter-molecular N-H?O hydrogen bonds between the acetates and amine H atoms of the benzimidazoles which determine the mol-ecular packing in the crystal structure.

SUBMITTER: Zimmermann I

PROVIDER: S-EPMC2961362 | biostudies-literature | 2008 May

REPOSITORIES: biostudies-literature

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Di-μ-acetato-μ-aqua-bis-[acetatobis(1H-benzimidazole)cobalt(II)].

Zimmermann Iwan I Keene Tony D TD Neels Antonia A Decurtins Silvio S

Acta crystallographica. Section E, Structure reports online 20080530 Pt 6

In the title compound, [Co(2)(C(2)H(3)O(2))(4)(C(7)H(6)N(2))(4)(H(2)O)], the half-mol-ecule in the asymmetric unit is completed by a crystallographic twofold rotation axis to give the full mol-ecule. The Co(II) ions are approximately octahedrally coordinated with a cis-N(2)O(4) coordination sphere. The compound features intra-molecular O-H⋯O hydrogen bonds between the non-bridging acetate groups and the bridging water mol-ecule, and inter-molecular N-H⋯O hydrogen bonds between the acetates and a ...[more]

PMID: 21202524

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Project description:The title compound, [Co(2)(C(9)H(4)N(2)O(4))(2)(H(2)O)(4)](n), is a one-dimensional polymeric complex with bridging 1H-benzimidazole-5,6-dicarboxyl-ate and aqua ligands. The Co(II) cation has an octa-hedral coordination environment provided by an NO(5) donor set. Adjacent polymeric chains extended along the [100] direction are linked by O-H?O and N-H?O hydrogen bonds, generating a three-dimensional network.

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Di-aqua-bis-(nicotinamide-?N (1))bis-(thiocyanato-?S)cobalt(II).

Project description:In the title compound, [Co(NCS)2(C6H6N2O)2(H2O)2], the Co(II) cation is located on an inversion centre and is coordinated by two thio-cyanate anions, two nicotinamide mol-ecules and two water mol-ecules in a distorted N2O2S2 octa-hedral geometry. The amide group is twisted by 31.30?(16)° with respect to the pyridine ring. In the crystal, mol-ecules are linked by O-H?O, O-H?S and N-H?S hydrogen bonds into a three-dimensional supra-molecular network. Weak ?-? stacking is observed between parallel pyridine rings of adjacent mol-ecules, the centroid-centroid distance being 3.8270?(19)?Å.

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Bis-(1H-benzimidazole-?N)bis(4-methyl-benzoato-?O,O')cobalt(II).

Project description:In the title mononuclear complex, [Co(C(8)H(7)O(2))(2)(C(7)H(6)N(2))(2)], the Co(II) atom is coordinated by four carboxylate O atoms from two 4-methyl-benzoate ligands and two N atoms from two benzimidazole ligands in an octa-hedral coordination geometry. The molecules are assembled via inter-molecular N-H?O hydrogen-bonding inter-actions into a three-dimensional network.

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Tetra-aqua-bis-[2-(2-nitro-phen-yl)acetato-?O]cobalt(II).

Project description:The mol-ecule of the title compound, [Co(C8H6NO4)2(H2O)4], is centrosymmetric. It is a cobalt(II) complex, bearing two (2-nitro-phen-yl)acetate and four aqua ligands. The coordination around the Co(II) atom is distorted octa-hedral, defined by four O atoms of water mol-ecules in the equatorial plane and by two carboxyl-ate O atoms at axial positions. The dihedral angles between the benzene ring and the acetate and nitro groups are 61.90?(10) and 19.21?(11)°, respectively. The water mol-ecules form O-H?O hydrogen bonds with the nitro and carboxyl-ate groups, leading to a layered structural arrangement parallel to (001).

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Aqua-bis(1H-benzimidazole-2-carboxyl-ato-?O,N)zinc(II).

Project description:In the title compound, [Zn(C(8)H(5)N(2)O(2))(2)(H(2)O)], the Zn(II) ion is coordinated in each case by a carboxyl-ate O atom and an imidazole N atom from two different benzimidazole-2-carboxyl-ate (BIC) ligands and one water O atom in a trigonal-bipyramidal geometry. In the complex mol-ecule, the two benzimidazole planes are twisted, making a dihedral angle of 55.93?(11)°. The three-dimensional framework is organized by inter-molecular N-H?O hydrogen bonding and O-H?O inter-actions and ?-? inter-actions between adjacent benzimidazole rings [centroid-centroid distance = 3.586?(3)?Å].

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Bis[?-2,2'-dimethyl-1,1'-(3-oxapentane-1,5-di-yl)di-1H-benzimidazole-?N:N]bis-[bis-(4-meth-oxy-benzoato)-?O;?O,O'-cobalt(II)].

Project description:The complete mol-ecule of the title complex, [Co(2)(C(8)H(7)O(3))(4)(C(20)H(22)N(4)O)(2)], is a dimer of the paddle-wheel-type generated by crystallographic inversion symmetry. The Co(II) ion is penta-coordinated by three O atoms from two 4-meth-oxy-benzoate anions (one bidentate and one monodentate) and two N atoms from two 2,2'-bis-(2-methyl-1H-benzimidazole)-ether ligands. This results in a very distorted trigonal-bipyramidal geometry for the metal ion, with both N atoms in equatorial sites. The dihedral angle between the benzimidazole ring systems in the ligand is 60.04?(8)°. The configuration of the mol-ecule is supported by intra-molecular C-H?O hydrogen bonds.

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