caa a22 4500 465776159 CHVBK 20180323111942.0 cr unu---uuuuu 170327e19900401xx s 000 0 eng 10.1007/BF01023910 doi (NATIONALLICENCE)springer-10.1007/BF01023910 Oxidative addition of mercury(II)cyanide to β -diketonato bis -(triphenylphosphite)rhodium(I) complexes [Elektronische Daten] [Gideon van Zyl, Gert Lamprecht, Johann Leipoldt] Summary: The kinetics of the oxidative addition of Hg(CN)2 to [Rh(β-diketone)(P(OPh)3)2] in acetone medium were studied. Various β-diketones, with different electronic and steric properties, were used to determine their effect on the rate of the oxidative addition reactions. The structure of the product of the oxidative addition was proposed with the aid of i.r.,1H−,13C− and31P n.m.r. spectra. A product in whichcis addition took place with the CN− and one P(OPh)3 group in the axial positions of an octahedron were proposed. A second order rate law, electronic and steric factors influencing the reaction rate as well as large negative values for the entropy of activation, supported an associative type of mechanism, which probably proceedsvia a cyclic three-centred transition state. Chapman and Hall Ltd, 1990 van Zyl Gideon Department of Chemistry, University of the Orange Free State, 9301, Bloemfontein, Republic of South Africa aut Lamprecht Gert Department of Chemistry, University of the Orange Free State, 9301, Bloemfontein, Republic of South Africa aut Leipoldt Johann Department of Chemistry, University of the Orange Free State, 9301, Bloemfontein, Republic of South Africa aut Transition Metal Chemistry Springer Netherlands 15/2(1990-04-01), 170-175 0340-4285 15:2<170 1990 15 11243 https://doi.org/10.1007/BF01023910 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01023910 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- van Zyl Gideon Department of Chemistry, University of the Orange Free State, 9301, Bloemfontein, Republic of South Africa aut NATIONALLICENCE 700 1- Lamprecht Gert Department of Chemistry, University of the Orange Free State, 9301, Bloemfontein, Republic of South Africa aut NATIONALLICENCE 700 1- Leipoldt Johann Department of Chemistry, University of the Orange Free State, 9301, Bloemfontein, Republic of South Africa aut NATIONALLICENCE 773 0- Transition Metal Chemistry Springer Netherlands 15/2(1990-04-01), 170-175 0340-4285 15:2<170 1990 15 11243 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer