
%0 Journal Article
%A Hendry, P 
%A Sargeson, AM 
%T Base Hydrolysis of Coordinated Trimethyl Phosphate
%J Australian Journal of Chemistry
%D 1986/08/01
%V 39
%N 8
%P 1177-1186
%K 
%R https://doi.org/10.1071/CH9861177
%U https://www.publish.csiro.au/paper/CH9861177 
%X The novel metal complex ions pentaammine ( trimethyl phosphate)- rhodium(III) and -iridium(III) have been synthesized and their hydrolysis in basic solution studied. The hydrolyses yield coordinated dimethyl phosphate ( dmp ), exclusively for the iridium complex, but accompanied by metal-oxygen bond rupture in the case of the rhodium complex. The reaction of the iridium complex proceeds with phosphorus-oxygen cleavage. The hydrolyses in the absence of nucleophiles other than hydroxide obey simple rate laws, v = k1[(NH3)5Ir( tmp )][OH-] for the iridium complex and v = (k1 + k2[OH-])[(NH3)5Rh( tmp )] for rhodium. Both complexes hydrolyse to yield coordinated dmp approximately 400 times faster than the analogous reaction for uncoordinated tmp. In butylamine -buffered solutions of [(NH3)5Rh( tmp )]3+, N- methylated butylamine is produced presumably as a result of nucleophilic attack of butylamine at a carbon centre of coordinated trimethyl phosphate. 
