The RuCl_3(dppb)H_2O complex:A new metal-assisted oxidative dehydrogenation of the omicron-phenylenediamine ligand

摘要

The trans-[R.uCl_2(dppb)(bqdi)] and trans-[RuCl_2(dppb)(opda)] complexes(dppb=1,4-bis(diphenylphosphine)butane,bqdi=omicron-ben-zoquinonediimine,and opda=omicron-phenylenediamine)were synthesized from the reaction of the mer-[RuCl_3(dppb)(H_2O)] aqua-complex with the opda ligand.The X-ray structural and electrochemical characterizations of the isolated compounds showed that this aqua-complex induces the oxidative dehydrogenation of the amine species(opda)to the imine form(bqdi)of the omicron-phenylene ligand during the synthetic procedure.In the presence of oxygen,the ~(31)P{~1H} NMR experiments confirmed that the trans-[RuCl_2(dppb)(bqdi)] complex is the only product formed.