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Tris(2,2'-bipyridine-κN:N')cobalt(III) trichloride tetra-hydrate.

ABSTRACT: The title compound, [Co(C(10)H(8)N(2))(3)]Cl(3)·4H(2)O, contains discrete [Co(bpy)(3)](3+) cations (bpy is 2,2'-bipyridine), Cl(-) anions and water mol-ecules. The [Co(bpy)(3)](3+) complex cation exhibits C(2) symmetry with the twofold axis through the central Co atom and bis-ecting one bpy ligand and one of the Cl(-) anions. The four solvent water mol-ecules and the remaining two Cl(-) anions lie on a mirror plane. Hydrogen-bond inter-actions define a two-dimensional layer structure parallel to (100), which consists of seven-membered [Cl(2)(H(2)O)(5)], eight-membered [Cl(4)(H(2)O)(4)] and ten-membered [Cl(2)(H(2)O)(8)] rings.

SUBMITTER: Liu W

PROVIDER: S-EPMC2959986 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Tris(2,2'-bipyridine-?N,N')cobalt(III) tris-(oxalato-?O,O)ferrate(III) mono-hydrate.

Project description:The title compound, [Co(C(10)H(8)N(2))(3)][Fe(C(2)O(4))(3)]·H(2)O, con-sists of two discrete tris-(chelate) metal ions (Co(III)N(6) and Fe(III)O(6) chromophores) and a water mol-ecule. The structure is highly symmetrical; the Co(III) and Fe(III) ions occupy positions with site symmetry 3.2. The coordination polyhedra of the metal atoms have a nearly octa-hedral geometry with noticeable trigonal distortions. The Co-N and Fe-O bond lengths are equal by symmetry, viz. 1.981?(2) and 1.998?(4)?Å, respectively. The cations and anions are arranged alternately along their threefold rotation axes parallel to [001], forming chains that are packed in a hexa-gonal manner. The water mol-ecules occupy voids between the chains. The crystal under investigation was an inversion twin.

| S-EPMC3297208 | biostudies-literature

Tris(ethane-1,2-diamine-κN,N')cobalt(III) carbonate iodide tetra-hydrate.

Project description:The title compound, [Co(C(2)H(8)N(2))(3)](CO(3))I·4H(2)O, crystallizes with a [Co(en)(3)](3+) cation (en is ethane-1,2-diamine), CO(3) (2-) and I(-) anions and four water mol-ecules in the asymmetric unit. In the cation, the three rings formed by the ethyl-enediamine units and the Co(III) metal ion are in slightly distorted twist conformations. Numerous O-H⋯O, N-H⋯O, N-H⋯I and O-H⋯I inter-molecular hydrogen bonds between the cation and two anions in concert with the four water mol-ecules dominate the crystal packing and create a supra-molecular infinite three-dimensional framework.

| S-EPMC3007973 | biostudies-literature

Tetra-aqua-(2,2'-bipyridine-κN,N')manganese(II) di-μ-aqua-bis-[aqua-(2,2'-bipyridine-κN,N')(5-sulfonatoisophthalato-κO)manganate(II)] tetra-hydrate.

Project description:The crystal structure of the title salt, [Mn(C(10)H(8)N(2))(H(2)O)(4)][Mn(2)(C(8)H(3)O(7)S)(2)(C(10)H(8)N(2))(2)(H(2)O)(4)]·4H(2)O, consists of mononuclear manganese(II) cations, dinuclear manganate(II) dianions and uncoordinated water mol-ecules. The dianion is located about an inversion center; the Mn(II) atom is coordinated by a 2,2'-bipyridine ligand, a sulfonatoisophthalate group, a water mol-ecule along with two bridging water mol-ecules in an octa-hedral geometry. The cation lies on a twofold rotation axis; the Mn(II) atom is coordinated by four water mol-ecules and a chelating 2,2'-bipyridine ligand in a distorted octa-hedral geometry. A partially overlapped arrangement between the bipyridine ligands and the aromatic ring of the sulfoisophthalate group of adjacent anions is observed; the distance (3.357 Å) indicates π-π stacking. Hydrogen bonds, with the water mol-ecules serving as hydrogen-bond donors, lead to a three-dimensional network architecture.

| S-EPMC2961927 | biostudies-literature

Tris(2,2'-bipyridine-?N,N')cobalt(III) octa-cyanido-tungstate(V).

Project description:In the title compound, [Co(C(10)H(8)N(2))(3)][W(CN)(8)], the Co atom (..2 site symmetry) is coordinated by six N atoms from three 2,2'-bipyridine ligands in an octa-hedral geometry; the Co-N bond distances range from 1.926?(2) to 1.939?(2)?Å. The W (..2 site symmetry) metal center is coordinated by eight cyanide ligands, resulting in a dodeca-hedral conformation with W-C distances in the range 1.165?(3)-2.176?(3)?Å. The cations and anions are linked into a three-demensional structure by weak C-H?N hydrogen bonds.

| S-EPMC2980176 | biostudies-literature

(2,2'-Bipyridine-κN,N')tetra-bromidoplatinum(IV).

Project description:In the title complex, [PtBr(4)(C(10)H(8)N(2))], the Pt(IV) ion has a slightly distorted octa-hedral coordination defined by two N atoms of the chelating 2,2'-bipyridine ligand and four bromide ions. As a result of the different trans effects of the N and Br atoms, the Pt-Br bonds trans to the N atom are slightly shorter than those to mutually trans Br atoms. In the crystal structure, the mol-ecules are arranged in a V-shaped packing pattern along the b axis and stacked in columns along the a axis. In the columns, several inter-molecular π-π inter-actions between the pyridine rings are present. The shortest ring centroid-centroid distance is 3.921 (6) Å, with a dihedral angle of 1.6 (5)° between the ring planes. The complexes are connected by C-H⋯Br hydrogen bonds, forming chains along the b axis.

| S-EPMC2983281 | biostudies-literature

Dichlorido(6,6'-dimethyl-2,2'-bipyridine-κN,N')cobalt(II).

Project description:In the title compound, [CoCl(2)(C(12)H(12)N(2))], the Co(II) atom is four-coordinated in a distorted tetra-hedral geometry by two N atoms from a 6,6'-dimethyl-2,2'-bipyridine ligand and two terminal Cl atoms. Inter-molecular C-H⋯Cl hydrogen bonds and π-π stacking inter-actions between the pyridine rings [centroid-centroid distances = 3.788 (1) and 3.957 (1) Å] are present in the crystal structure.

| S-EPMC2983300 | biostudies-literature

Tris{N-[(anthracen-9-yl)methyl-ene-amino]thio-ureato}cobalt(III) tetra-hydrate.

Project description:In the title complex, [Co(C(16)H(12)N(3)S)(3)]·4H(2)O, the central Co(III) atom is in a distorted octa-hedral coordination environment. There are three N-[(anthracen-9-yl)-methyl-ene-amino]-thio-ureate ligands coordinated to the Co(III) atom via three imine N and three thio-amide S atoms. The Co-S and Co-N bond distances are in expected ranges [2.2194 (8)-2.2545 (8) and 1.926 (2)-1.985 (2)Å, respectively]. The endocyclic S-Co-N bond angles in the five-membered chelate rings range from 82.91 (7) to 85.33 (7)°. The structure contains four water mol-ecules which are disordered over 12 sites and link the complex mol-ecules into a three-dimensional network through N-H⋯O, O-H⋯O, O-H⋯N, and O-H⋯S hydrogen bonds.

| S-EPMC2959531 | biostudies-literature

catena-Poly[[[diaqua-bis(1H-indole-3-acetato-κO)cobalt(II)]-μ-4,4'-bipyridine-κN:N'] tetra-hydrate].

Project description:The 4,4'-bipyridine spacer in the title compound, [Co(C(10)H(8)NO(2))(2)(C(10)H(8)N(2))(H(2)O)(2)]·4H(2)O, links the diaqua-cobalt(II) dicarboxyl-ate units into a linear chain; the metal atom lies on a center of inversion in an octa-hedral environment. The coordinated and uncoordinated water mol-ecules inter-act through O-H⋯O hydrogen bonds to form a three-dimensional network.

| S-EPMC2961286 | biostudies-literature

Diaqua-bis(norfloxacinato)manganese(II) 2,2'-bipyridine solvate tetra-hydrate.

Project description:In the crystal structure of the title compound {systematic name: diaqua-bis[1-ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydro-quinoline-3-carboxyl-ato]manganese(II) 2,2'-bipyridine solvate tetra-hydrate}, [Mn(C(16)H(17)FN(3)O(3))(2)(H(2)O)(2)]·C(10)H(8)N(2)·4H(2)O, the pyridone O atom and one carboxyl-ate O atom of the two norfloxacin ligands are bound to the Mn(II) ion, which is located on an inversion centre, and occupy equatorial positions, while two aqua O atoms lie in apical positions, resulting in a distorted octa-hedral geometry. The crystal packing is stabilized by N-H?O and O-H?O hydrogen-bonding interactions.

| S-EPMC2969423 | biostudies-literature

Poly[diaqua-bis(2,2'-bipyridine)tris-(μ(4)-2,2'-bipyridine-4,4'-dicarboxyl-ato)dineodymium(III)].

Project description:In the crystal structure of the title mixed-ligand coordination polymer, [Nd(2)(C(12)H(6)N(2)O(4))(3)(C(10)H(8)N(2))(2)(H(2)O)(2)](n), the Nd(III) ion is in an octa-hedral coordination environment formed by one water mol-ecule, one chelating 2,2'-bipyridine ligand, and five monodentate carboxyl-ate groups. The local coordination polyhedron around the Nd(III) ion is a bicapped trigonal prism. Two Nd(III) centers are bridged by four carboxyl-ate groups to form an Nd(2) dimeric unit; these are further connected by 2,2'-bipyridine-4,4'-dicarboxyl-ate linkers, resulting in a layered coordination network.

| S-EPMC2915173 | biostudies-literature

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