MIMICKING THE BINDING OF GLUTAMATE TO ZINC IN THERMOLYSIN AND CARBOXYPEPTIDASE - THE SYNTHESIS OF [ETA(3)-(HCO2)BP(BU-T,PR-I)]ZNCL BY INSERTION OF CO2 INTO A B-H BOND OF THE BIS(PYRAZOLYL)HYDROBORATO ZINC COMPLEX [BP(BU-T,PR-I)]ZNCL

Insertion of CO2 into one of the B-H bonds of the bis(pyrazolyl)hydrob orato complex [Bp(But,Prl)]ZnCl yields [eta(3)-(HCO2) Bp(But,Prl)]ZnCl ; the carboxylate group of the generated [NNO] donor ligand mimics the glutamate residues at the active sites of thermolysin and carboxypept idase.