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Butyl-bis-(diphenyl-glyoximato)(pyridine-?N)-cobalt(III).

ABSTRACT: In the title compound, [Co(C(4)H(9))(C(14)H(11)N(2)O(2))(2)(C(5)H(5)N)], the Co(III) atom is coordinated by a butyl group, a nitro-gen-bonded pyridine and two N,N'-bidentate diphenyl-glyoximate ligands in a distorted octa-hedral geometry. The crystal structure features two short O-H?O bridges between the two chelating anions, with O?O distances less than 2.5?Å.

SUBMITTER: Kumar S

PROVIDER: S-EPMC3274857 | biostudies-other | 2012 Feb

REPOSITORIES: biostudies-other

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Butyl-bis-(diphenyl-glyoximato)(pyridine-κN)-cobalt(III).

Kumar Sarvendra S Thapa Suresh S

Acta crystallographica. Section E, Structure reports online 20120107 Pt 2

In the title compound, [Co(C(4)H(9))(C(14)H(11)N(2)O(2))(2)(C(5)H(5)N)], the Co(III) atom is coordinated by a butyl group, a nitro-gen-bonded pyridine and two N,N'-bidentate diphenyl-glyoximate ligands in a distorted octa-hedral geometry. The crystal structure features two short O-H⋯O bridges between the two chelating anions, with O⋯O distances less than 2.5 Å. ...[more]

PMID: 22346804

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Butyl-bis-(dimethyl-glyoximato-?N,N')(pyridine-?N)cobalt(III).

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Project description:The Co centre in the title compound, [Co(C(14)H(11)N(2)O(2))(2)Cl(C(3)H(4)N(2))]·0.5H(2)O, shows a slightly distorted octa-hedral coordination geometry. The glyoximate units of the mol-ecule are linked by O-H?O hydrogen bonds with the H atom almost in the middle of the two O atoms. The crystal packing is stabilized through inter-molecular N-H?O, N-H?N and O-H?Cl hydrogen bonds. The uncoordinated water mol-ecule shows half-occupation.

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Chloridobis(dimethyl-glyoximato-?N,N')(4-methyl-pyridine-?N)cobalt(III) hemihydrate.

Project description:In the title complex, [Co(C(4)H(7)N(2)O(2))(2)Cl(C(6)H(7)N)]·0.5H(2)O, the central Co(III) ion, chelated by four N atoms of the two bidenate glyoximate ligands, exhibits a slightly distorted octa-hedral geometry. The axial positions are occupied by a chloride ion and the 4-methyl-pyridine N atom. Inter-molecular O-H?O hydrogen bonds link the mol-ecules in the crystal via the water mol-ecules, while the glyoximate ligands exhibit intra-molecular O-H?O hydrogen bonds.

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Aqua-chloridobis(diphenyl-glyoximato-?N,N')cobalt(III) dihydrate.

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Chloridobis(dimethyl-glyoximato-?N,N')(ethyl pyridine-3-carboxyl-ate-?N)cobalt(III).

Project description:In the title compound, [Co(C(4)H(7)N(2)O(2))(2)Cl(C(8)H(9)NO(2))], which was prepared as a model complex of vitamin B(12), the Co(III) atom, which is linked to four N atoms of the pseudo-macrocyclic (dmgH)(2) ligand (dmgH is dimethyl-glyoximate) in the equatorial plane and one Cl(-) anion and one N atom of ethyl nicotinate in apical positions, displays an approximately octa-hedral coordination. The Co atom is 0.0187?(8)?Å out of the mean plane of the four equatorial N atoms. The structure has an O?H?O bridge, which is very common in cobaloxime derivatives, with O?H distances of 1.24?(2) and 1.25?(2)?Å.

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(N-n-Butyl-pyridine-4-carbothio-amide-?N)chloridobis(dimethyl-glyoximato-?N,N')cobalt(III) hemihydrate.

Project description:The title compound, trans-[Co(C(4)H(7)N(2)O(2))(2)Cl(C(10)H(14)N(2)S)]·0.5H(2)O, contains two independent mol-ecules in the asymmetric unit in which the Co(III) ions are coordinated in slightly distorted octa-hedral coordination environments. The bis-chelating glyoximate ligands, which occupy equatorial sites, are linked by interligand O-H?O hydrogen bonds. The dihedral angles between the mean planes of the glyoximate ligands in each mol-ecule are 2.07?(8) and 1.60?(1)°. The asymmetric unit contains a solvent water mol-ecule which is disordered over two sites with refined occupancies 0.64?(2) and 0.36?(2).

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Aqua-bromidobis(dimethyl-glyoximato)cobalt(III).

Project description:In the title complex, [CoBr(C(4)H(7)N(2)O(2))(2)(H(2)O)], a crystallo-graphic mirror plane bis-ects the mol-ecule, perpendicular to the glyoximate ligands. The geometry around the cobalt(III) atom is approximately octa-hedral with the four glyoximate N atoms forming the square base. A bromide ion and the O atom of a water mol-ecule occupy the remaining coordination sites. The N-Co-N bite angles are 82.18?(4) and 80.03?(16)°. The glyoximate moieties form strong intra-molecular O-H?O hydrogen bonds. The coordinated water mol-ecule forms an inter-molecular O-H?O hydrogen bond with a glyoximate O atom, thereby generating supra-molecular chains parallel to [010].

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Chloridobis(dimethyl-glyoximato-κN,N')(ethyl pyridine-4-carboxyl-ate-κN)cobalt(III) chloro-form monosolvate.

Project description:The title compound, [Co(C(4)H(7)N(2)O(2))(2)Cl(C(8)H(9)NO(2))]·CHCl(3), was synthesized as a model complex of vitamin B(12). The Co(III) cation displays an approximately octa-hedral coordination environment, being displaced by 0.0240 (15) Å from the mean plane of the four N atoms of the equatorial plane. The O-H distances in the dimethyl-glyoximate hy-droxy groups are 0.89 (6) and 1.14 (6) Å; such long O-H bonds are very common in cobaloxime derivatives. Weak classical O-H⋯N and non-classical C-H⋯Cl hydrogen-bonding interactions further consolidate the crystal packing.

| S-EPMC3274923 | biostudies-literature

[(-)-(1S,2S)-N,N'-Bis(2-oxidobenzyl-idene)-1,2-diphenyl-ethane-1,2-diamine]-bis-(pyridine)cobalt(III) perchlorate methanol hemisolvate hemihydrate.

Project description:In the title compound, [Co(C(28)H(22)N(2)O(2))(C(5)H(5)N)(2)]ClO(4)·0.5CH(4)O·0.5H(2)O, each Co(III) ion is coordinated by the tetra-dentate N,N'-bis-(2-oxidobenzyl-idene)-1,2-diphenyl-ethane-1,2-diamine ligand [Co-N = 1.900?(3) and 1.903?(3)?Å; Co-O = 1.885?(3) and 1.891?(3)?Å] and two pyridine ligands [Co-N = 1.967?(4) and 1.977?(3)?Å] in a distorted octa-hedral geometry. The packing of the cations and anions forms voids of 258?Å(3), which are filled by methanol and solvent water mol-ecules with half occupancies. O-H?O hydrogen bonds between solvent molecules, perchlorate anions and water molecules, and between water molecules and O atoms of the ligand, help to consolidate the crystal packing.

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4-[(4'-Chloro-methyl-[1,1'-biphen-yl]-4-yl)meth-yl]bis-(dimethyl-glyoximato-?N,N')(pyridine-?N)cobalt(III).

Project description:The title compound, [Co(C(14)H(14)Cl)(C(4)H(6)N(2)O(2))(2)(C(5)H(5)N)], is a model compound for the more complex cobalamines like vitamins B(12). The Co(III) atom is coordinated by a (4'-chloro-methyl-[1,1'-biphen-yl]-4-yl)methyl group, an N-bonded pyridine and two N,N'-bidentate dimethyl-glyoximate ligands in a distorted octa-hedral geometry. The glyoximate ligands exhibit intra-molecular O-H?O hydrogen bonds, which is very common in cobaloxime derivatives.

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