STUDIES OF THE COORDINATION CHEMISTRY OF PYRAZOLYLBORATE DERIVATIVES WITH COPPER(II) IONS

Abstract

A series of new complexes, [HB{pz^An}₃]CuOAc (1), [HB{pz^An}₃]CuCl(pz^AnH) (2), ([HB{pz^An,Me}₃]Cu)₂OAc (3) and [HB{pz^An,Me}₃]CuCl(pz^An,MeH) (4) [pz^An=3-(p-anisyl)pyrazolyl, pz^An,Me=3-(p-anisyl)-5-methylpyrazolyl] have been synthesized and characterized by elemental analyses, IR spectra, ESR spectra, mass spectra and CV measurements. The compounds (2) and (4) are five-coordinated with an additional pyrazole ligand. The infrared bands ν _as(CO₂) and ν _s(CO₂) indicate that the acetate is an unidentate ligand in (1) but a bridging one in (3).

ACKNOWLEDGMENT

This work was supported by the National Natural Science Foundation of China (Grant No. 29571020).