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Cyanidotetra-kis-(trimethyl-phosphine)cobalt(I).

ABSTRACT: The title compound, [Co(CN)(C(3)H(9)P)(4)], was obtained as a product of the reaction of [Co(PMe(3))(4)] with a molar equivalent of 2,6-difluoro-benzonitrile in diethyl ether. This compound is stable in the air for several hours, but rapidly decomposes at room temperature in solution. The cobalt(I) atom has s trigonal-bipyramidal coordination enviroment in which the cyano group and one of the PMe(3) groups are in the axial positions.

SUBMITTER: Xu X

PROVIDER: S-EPMC3099961 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Cyanidophenyl-tris(trimethyl-phosphine)cobalt(II).

Project description:The title mol-ecule, [Co(C(6)H(5))(CN)(C(3)H(9)P)(3)], lies on a crystallographic mirror plane with the Co(II) ion coordinated in a distorted square-pyramidal environment with one of the P atoms in the apical position. In the basal plane, the phenyl substituent is trans to the cyanide group with a C-Co-C angle which is significantly distorted from linearity.

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Project description:The title compound, [Co(C(30)H(23)O(2)P(2))(C(3)H(9)P)(2)], was synthesized by the addition of a Co(PMe(3))(4) solution to (PPh(2)O)(2)C(6)H(4). The Co(I) atom displays a trigonal-bipyramidal geometry with the two P atoms of the 'PCP' pincer ligand and the P atom of one of the trimethyl phosphine ligands forming the basal plane, whereas the metalated C atom and the P atom of the second phospine ligand occupy the apical sites. The Co-C distance is 1.961?(2)?Å and the C-Co-P angle is 171.96?(6)°.

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Project description:In the mol-ecule of the title compound, [Co(C(44)H(24)Cl(4)N(4)){(C(4)H(9))(3)P}(2)]ClO(4), the Co(III) centre has a slightly distorted octa-hedral geometry and is coordinated by four N atoms of the tetra-pyrrolic ring in the equatorial positions and two phosphine ligands in the axial positions. The dihedral angles between meso-substituted chloro-phenyl rings and the basic tetra-pyrrolic ring are 82.66?(9), 82.16?(7), 83.97?(11) and 76.87?(8)°. In one of the phosphine ligands, the two terminal methyl groups are disordered over two positions with refined site-occupancy ratios of 0.70?(7):0.30?(7) and 0.66?(2):0.34?(2). In the crystal structure, mol-ecules are linked together along the a axis by inter-molecular C-H?Cl inter-actions. The crystal structure is further stabilized by intra-molecular C-H?O and C-H?N inter-actions and inter-molecular C-H?O and C-H?? inter-actions.

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Project description:The title compound, [Cu(C(3)F(5)O(2))(C(3)H(9)OP)(4)](C(3)F(5)O(2)), comprises a cationic Cu(II) complex and a disordered penta-fluoro-propionate counter-ion. The metal atom has a distorted square-pyramidal coordination environment formed by four O atoms originating from trimethyl-phosphine oxide mol-ecules and the remaining one belonging to the monodentate penta-fluoro-propionate anion, which is situated in the basal plane of the pyramid. The mol-ecules are held together in the crystal by a net of weak C-H?O and C-H?F hydrogen bonds. The counter anion is disordered over two sets of sites in a 0.629?(5):0.371?(5) ratio.

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Project description:In the crystal structure of the title compound, [CoCl(2)(C(15)H(17)Cl(2)N(3)O)(4)], the Co(II) cation lies on an inversion center and has a slightly distorted octa-hedral coordination geometry. The equatorial positions are occupied by four N atoms from four diniconazole [systematic name: (E)-(RS)-1-(2,4-dichloro-phen-yl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pent-1-en-3-ol] ligands. The axial sites are occupied by two Cl(-) anions. In the two independent organic ligands, the triazole ring is oriented at dihedral angles of 18.28?(14) and 32.15?(14)° with respect to the dichloro-phenyl ring. Inter-molecular O-H?Cl hydrogen bonds consolidate the crystal packing.

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Project description:Redetermination of the structure of the title compound, [Ge(SnMe(3))(4)] or [GeSn(4)(CH(3))(12)], previously refined from powder diffraction data only [Dinnebier, Bernatowicz, Helluy, Sebald, Wunschel, Fitch & van Smaalen et al. (2002 ▶). Acta Cryst. B58, 52-61], confirms that four bulky trimethyl-stannyl ligands surround the central Ge atom (site symmetry 1) in a tetra-hedral coordination.

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Project description:The title compound, cis-[RuCl(2)(C(3)H(9)P)(4)]·2C(6)H(6), contains a complex mol-ecule with a crystallographic mirror plane passing through the Ru(II) atom, the two cis-disposed Cl ligands and two P atoms of the two cis-disposed P(CH(3))(3) ligands. The Ru(II) atom adopts a distorted octa-hedral RuCl(2)P(4) coordination geometry with the two trans-disposed P atoms occupying the axial positions. The packing of the structure is accomplished through non-classical C-H?Cl hydrogen bonds between the benzene solvent mol-ecule and one of the Cl ligands.

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