Coordination chemistry of copper-(i) and -(ii) with 2-pyridylmethyl substituted triazacyclohexanes

Abstract

The syntheses of several novel copper-(I) and -(II) compounds containing triazacyclohexanes with one or three 2-pyridylmethyl substituents are described. The molecular structures of (2-PyMe)₃TACCuCl₂3, [(2-PyMe)Et₂TACCuCl₂]₂4 and [(2-PyMe)₃TACCu^I](BF₄) 5 have been determined by single crystal X-ray diffraction. The reactivity of 5 and [(2-PyMe)Et₂TACCu](BF₄) 7 towards dioxygen was investigated and a very stable oxidation product with a Cu₄(OH)₄ cubane core could be obtained in high yield simply by exposing 7 to the atmosphere.