Rhodium(I) complexes with bis(pyrazolyl)methane ligands. Crystal structure of [Rh(COD)(CH2(Pz)2)]ClO4· C2H4Cl2 |
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| Authors: | LA Oro M Esteban RM Claramunt J Elguero C Foces-Foces FH Cano |
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| Institution: | Departamento de Quimica Inorgánica, Universidad de Zaragoza, Zaragoza Spain;Departamento de Química Orgánica, Universidad Nacional de Educación a Distancia, Ciudad Universitaria, Madrid-3 Spain;Institute de Química Medica, C.S.I.C., Juan de la Cierva 3, Madrid-6 Spain;Departamento de Rayos-X, Instituto Rocasolano, C.S.I.C., Serrano 119 Madrid-6 Spain |
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| Abstract: | The synthesis and properties of neutral and cationic complexes of general formulae {RhCl(diolefin)}2(CH2(pz)2)], Rh(CO)2 (CH2(pz)2)]RhCl2(CO)2], (Rh(diolefin)(CH2(pz)2)]ClO2, {Rh(diolefin)(PPh3)}2(CH2(pz)2)](ClO4)2, Rh(CO)2(CH2(pz)2)]ClO4 and Rh(CO)(CH2(pz)2)(PPh3)]ClO4 are described. The NMR spectra of Rh(COD)(CH2(pz)2)]ClO4 complexes are discussed. X-ray structural analysis of Rh(COD)(CH2(Pz)2)]ClO4 · C2H4Cl2 is presented; the final R factor is 0.061 for 2436 observed data, recorded with Cu-Kα, not corrected for absorption and with the sample inside a capillary. The Rh atom presents a distorted square planar coordination in a mononuclear arrangement. The COD ring has a twisted boat conformation, and the two halves of the CH2(Pz)2 moiety, which are quite similar to one another, form an angle of 47.2(4)°. |
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