Isolation and crystal structure of [Cu(L1)(O2CH)](ClO4) center dot H2O: Hydrolysis of DMF (N,N-dimethylformamide) by a copper(II) tetraazamacrocycle

摘要

The tetraazamacrocyclic copper(II) complex, [Cu(L)](ClO4)(2) (L = 3,14-dimethyl-2,6,13,17-tetraazatricyclo[14.4.0(1.18) center dot 0(7.12)]docosane), hydrolyzes DMF at room temperature. The formate anion which is one of the hydrolyzed species of DMF coordinates to the copper(II) ion to form [Cu(L1)(O2CH)](ClO4) center dot H2O (1). The crystals of the complex I were isolated and structurally characterized by a combination of analytical, spectroscopic, and crystallographic methods. In 1, the macrocyclic ligand contains two trans fused cyclohexane rings, and the coordination geometry about the copper(II) ion adopts a square pyramid with four equatorial nitrogen atoms from the macrocycle and an oxygen atom from the formato ligand with an uncoordinated perchlorate ion.