Conjugate-base mechanism and activation parameters for the ammoniation of bromopentaamminerhodium(III) perchlorate and (nitrato)pentaamminerhodium(III) perchlorate in liquid ammonia
Water–ammonia exchange at amminerhodium(<scp>III</scp>) complexes in aqueous ammoniacal solution
作者:Sijbe Balt、Andries Jelsma
DOI:10.1039/dt9810001289
日期:——
The kinetics of water–ammoniaexchange at trans-[Rh(NH3)4(OH)2]+ and [Rh(NH3)5(OH)]2+ have been studied in aqueousammoniacalsolution. The reaction of trans-[Rh(NH3)4(OH)2]+ with ammonia to form [Rh(NH3)5(OH)]2+ has been studied in the temperature range 68–90 °C. The pH dependence of the observed rate constant indicates H2O to be the leaving group. The kinetics could be interpreted in terms of the
Competition between ammonia and the nitrite ion as leaving groups: Hydrolysis of some nitroamminerhodium(III) complexes
作者:S Balt、A Jelsma
DOI:10.1016/0022-1902(81)80032-2
日期:1981.1
analogous Co(III) complexes. The determining factor in both cases seems to be a trans-labilizing effect of the NO2− group. It appeared that base-hydrolysis of [Rh(NH3)5NO2]2+ proceeds via loss of NO2−. The cis- and trans-[Rh(NH3)4(NO2)2]+ complexes do not give a relevant contribution of base-hydrolysis to the overall rate-constant. Activation parameters are compared to those for the analogous Co(III) reactions