Molecular structure and spectroscopic characterization of cobalt and copper complexes with a hexadentate nitrogen ligand, 1,10-bis(2-pyridylmethyl)-1,4,7,10-tetraazadecane

The syntheses of the cobalt(III) and copper(II) complexes with the hexadent ate nitrogen ligand 1,10-bis(2-pyridylmethyl)-1,4,7,10-tetraazadecane (bpte ta) are reported. NMR spectra and X-ray structure determination have shown that these octahedral complexes have a beta-cis configuration with pyridine nitrogen atoms mutually cis and trans to amine nitrogen atoms. A large dis tortion due to the Jahn-Teller effect is observed in the case of the copper (II) compound. (C) 2000 Elsevier Science Ltd. All rights reserved.