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Diazido-bis(2,2'-biimidazole)cobalt(II).

ABSTRACT: In the title compound, [Co(N(3))(2)(C(6)H(6)N(4))(2)], the Co(II) atom lies on a centre of inversion and is bonded to two azide ions and two bidentate 2,2'-biimidizole ligands, giving a slightly distorted octa-hedral CoN(6) coordination geometry. In the crystal structure, inter-molecular N-H⋯N hydrogen bonds exist between the 2,2'-biimidizole ligands and the azide ions, linking the complexes into sheets.

SUBMITTER: Li S

PROVIDER: S-EPMC2914954 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Diazido-bis(2,2'-biimidazole)iron(II).

Project description:In the title compound, [Fe(N(3))(2)(C(6)H(6)N(4))(2)], the Fe atom is bonded to two azide ions located in axial positions and to two equatorially positioned bidentate biimidazole ligands, forming a slightly distorterd octa-hedron. The non-H atoms of the equatorial plane are coplanar, with a mean deviation of 0.0355 (2) Å. The Fe(II) cation lies on an inversion centre. Thus, the asymmetric unit comprises one half-mol-ecule.

| S-EPMC2961650 | biostudies-literature

Diazido-bis(2,2'-biimidazole)manganese(II).

Project description:In the title compound, [Mn(N(3))(2)(C(6)H(6)N(4))(2)], the Mn atom (site symmetry ) is bonded to two azide ions and two bidentate biimidizole ligands, resulting in a slightly distorted octa-hedral MnN(6) geometry for the metal ion. In the crystal structure, N-H⋯N hydrogen bonds help to consolidate the packing.

| S-EPMC2961868 | biostudies-literature

Diaqua-bis(2,2'-biimidazole)cobalt(II) dichloride.

Project description:There are independent cations and four chloride anions in the crystal structure of the title complex, [Co(C(6)H(6)N(4))(2)(H(2)O)(2)]Cl(2). In each cation, the Co(II) cation is coordinated by four N atoms from two biimidazole and two O atoms of two water mol-ecules; one Co atom is at a position of site symmetry m, the other at a position of site symmetry 2/m. All Cl(-) ions and water mol-ecules are also located on the mirror plane. Each structural unit is connected through O-H?Cl and N-H?Cl inter-molecular hydrogen bonds, forming a three-dimensional supramolecular structure.

| S-EPMC2960203 | biostudies-literature

Diaqua-bis(2,2'-biimidazole)cobalt(II) 4,4'-dicarboxy-biphenyl-3,3'-di-car-boxylate.

Project description:In the title compound, [Co(C(6)H(6)N(4))(2)(H(2)O)(2)](C(16)H(8)O(8)), the Co(II) cation and the organic anion occupy different crystallographic inversion centres and, as a consequence, the asymmetric unit comprises two half-mol-ecules. The benzene groups are coplanar. The four coordinating N atoms of the two bidentate biimidazole ligands define the equatorial plane of a slightly distorted octa-hedral CoO(2)N(4) geometry, and the water O atoms lie in the axial coordination sites. Translational (a,) and inversion-related symmetry operations link the Co complex mol-ecules and the negatively charged carboxyl-ate anions via inter-molecular N-H?O and O-H?O hydrogen bonds into sheets parallel to (01). The coordinated water mol-ecules connect the sheets through O-H?O hydrogen bonds, forming a three-dimensional framework. In addition, two intra-molecular O-H?O hydrogen bonds are observed between the carboxyl and carboxyl-ate groups.

| S-EPMC2968794 | biostudies-literature

Diazido-bis-(5,5'-dimethyl-2,2'-bipyridyl-?N,N')cobalt(II) monohydrate.

Project description:In the title compound, [Co(C(12)H(12)N(2))(2)(N(3))(2)]·H(2)O, the Co(II) ion is situated on a crystallographic twofold axis and adopts a distorted octa-hedral geometry with the two dmbpy (dmbpy = 5,5'-dimethyl-2,2'-bipyrid-yl) and the two azido ligands in a cis arrangement. The solvent water mol-ecule and one methyl group of the dmbpy ligand are disordered over two sets of sites in a 1:1 ratio. The crystal structure is stabilized by intra-molecular C-H?N(dmbpy) and inter-molecular O-H?N(azide) hydrogen bonds.

| S-EPMC3099828 | biostudies-other

Bis(2,2'-biimidazole-κN,N')bis-(2-bromo-fumarato-κO)copper(II).

Project description:In the title compound, [Cu(C(4)H(2)BrO(4))(2)(C(6)H(6)N(4))(2)], the central Cu(II) atom lies on an inversion center and is six-coordinated in an octahedral geometry by four N atoms from two chelating biimidazole mol-ecules in the equatorial plane and two O atoms from two 2-bromo-fumarate ligands in the axial positions. O-H⋯O, N-H⋯O and C-H⋯O hydrogen bonds lead to a three-dimensional network.

| S-EPMC2915152 | biostudies-literature

Bis(μ-biphenyl-2,2'-dicarboxyl-ato)bis-[(2,2'-bipyridine)cobalt(II)].

Project description:In the title compound, [Co(2)(C(14)H(8)O(4))(2)(C(10)H(8)N(2))(2)], the Co(II) atom is coordinated by two N atoms from one 2,2'-bipyridine ligand and two O atoms from two biphenyl-2,2'-dicarboxyl-ate (2,2'-dpa) ligands in a distorted planar geometry. Longer Co-O contacts [2.437 (3) and 2.552 (3) Å] are formed to the second O atom of each coordinated carboxyl-ate group so that these groups approximate a bidentate coordination mode and the coordination geometry around Co(II) approaches distorted octa-hedral. The 2,2'-dpa ligands bridge two Co(II) atoms, forming a cyclic dinuclear complex around a centre of inversion.

| S-EPMC2959843 | biostudies-literature

Bis(?-2,2'-biimidazole-?N:N)bis-[aqua-copper(I)] sulfate.

Project description:In the structure of the title compound, [Cu(2)(C(6)H(6)N(4))(2)(H(2)O)(2)]SO(4), the asymmetric unit contains half each of two 2,2'-diimidazole ligands, one Cu(+) cation, one water mol-ecule and half of a sulfate anion (2 symmetry). The dinuclear complex is completed through a twofold rotation axis, leading to a twisted ten-membered ring mol-ecule. The dihedral angle between the two symmetry-related 2,2'-diimidazole ligands is 23.6?(1)°. The copper centre is coordinated by two N atoms of two symmetry-related 2,2'-diimidazole ligands in an almost linear fashion. The water mol-ecule exhibits a weak coordination to Cu(+) with a more remote distance of 2.591?(2)?Å. The distance between the two copper centres is 2.5956?(6)?Å. O-H?O and N-H?O hydrogen bonds between the complex cation, the water mol-ecule and the sulfate anion lead to the formation of a three-dimensional network.

| S-EPMC2972028 | biostudies-literature

Bis(2,2':6',2''-terpyridine)cobalt(II) bis-(tricyano-methanide).

Project description:The title complex, [Co(C(15)H(11)N(3))(2)](C(4)N(3))(2), is built up from discrete [Co(terpy)(2)](2+) cations (terpy is 2,2':6',2''-terpyridine) and [C(CN)(3)](-) anions. In the cation, the Co(II) atom is coordinated by two terpy mol-ecules, giving a distorted octa-hedral geometry. The tricyano-methanide anions are not directly coordinated to the Co(II) atom, but some weak C-H⋯N hydrogen bonds involving the terminal N atoms of the tricyaomethanide ions and the terpyridine H atoms link anions and cations building a three-dimensional network.

| S-EPMC2968836 | biostudies-literature

cis-Bis-(2,2'-bipyrid-yl)dicyanato-cobalt(II).

Project description:In the title complex, [Co(NCO)(2)(C(10)H(8)N(2))(2)], the Co atom is coordinated by four N atoms from two 2,2'-bipyridyl ligands and two N atoms from two cyanate anions in a distorted octa-hedral geometry. The Co atom lies on a twofold rotation axis. The average Co-N bond length is 2.126 (7) Å. Weak inter-molecular C-H⋯O inter-actions lead to the formation of a three-dimensional network.

| S-EPMC2960999 | biostudies-literature

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