Synthesis, characterization and aquation kinetics of a new trans diastereoisomer of dichloro(meso-5,12-dimethyl-1,4,8,11-tetraazacyclotetradecane)cobalt(III) perchlorate

Abstract

A new trans diastereoisomer of dichloro(meso-5,12-dimethyl-1,4,8,11 -tetraazacyclotetradecane)-cobalt(m) perchlorate has been prepared, and the electronic absorption and infrared spectral data studied. The assignments of the structure of the isomer have been accomplished by thorough stereochemical analysis combined with ¹H and ¹³C NMR spectral data. Aquation kinetics have been studied at various temperatures and activation parameters determined. The results indicate a dissociative activation with retention of configuration and a distorted-square pyramidal activated complex.