835605-09-9Relevant articles and documents
Synthesis and characterization of two novel cobalt (II) phosphine complexes: Crystal structures of [CoCl3(Cy2PCH 2PCy2H)] and [Co(NO3)2(Cy 2PCH2PCy2O)]. Cy = cyclohexyl, C 6H11
Kriley, Charles E.,Majireck, Max M.,Tobolewski, Jake M.,Kelvington, Luke E.,Cummings, Stephen H.,Hershberger, Stefan J.,Link, Jason D.,Silverio, Anthony L.,Fanwick, Phillip E.,Rothwell, Ian P.
, p. 57 - 62 (2005)
The complexes [(Cy2PCH2PCy2H)CoCl 3] (1) and [(Cy2PCH2PCy2O)Co(NO 3)2] (2), Cy = cyclohexyl (C6H11), have been prepared and characterized by EPR, UV-Vis, microanalysis and X-ray crystallography. The reaction CoCl2 ? 6H2O and dcpm, dcpm = bis(dicyclohexylphosphino)methane, was found to form the thermochromic and paramagnetic complex [(Cy2PCH2PCy2H) CoCl3] (1). Of particular interest is the formation of a zwitterion, or inner salt. The reaction of Co(NO3)2 ? 6H 2O and dcpm in a toluene/methanol/methylene chloride mixture yields the pseudo-octahedral complex [(Cy2PCH2PCy 2O)Co(NO3)2] (2). The complexes [(Cy 2PCH2PCy2H)CoCl3] (1) and [(Cy 2PCH2PCy2O)Co(NO3)2] (2), Cy = cyclohexyl (C6H11), have been prepared and characterized by EPR, UV-Vis, microanalysis and X-ray crystallography. The reaction CoCl2 ? 6H2O and dcpm, dcpm = bis(dicyclohexylphosphino)methane, was found to form the monomeric, four coordinate, thermochromic and paramagnetic complex [(Cy2PCH 2PCy2H)CoCl3] (1). Of particular interest is the formation of a zwitterion, or inner salt, in which the dangling phosphine adds a hydrogen atom, giving the phosphorus a +1 formal charge. The molecule adopts a pseudo-tetrahedral geometry around the central cobalt atom to which the cyclohexyl groups bind in an equatorial fashion to the phosphine. The reaction of Co(NO3)2 ? 6H2O and dcpm in a toluene/methanol/methylene chloride mixture yields the pseudo-octahedral complex [(Cy2PCH2PCy2O)Co(NO3)2] (2). The cobalt is in the +2 oxidation state with one of the phosphorus atoms again having a +1 formal charge. The complex adopts a pseudo-octahedral geometry around the central cobalt atom with the cyclohexyl groups binding in an equatorial fashion to the phosphine similar to [(Cy2PCH 2PCy2H)CoCl3].
