The copper(II) complex of trans-5(S), 7(S), 12(R),14(R)-tetramethyl-1,4,8,11-tetraazacyclotetradecane-6,13-dione dioxime (L2) is synthesised and its X-ray crystal structure is reported; it has a trans-II (R,R,S,R) arrangement of the four coordinated secondary amines within the fourteen-membered macrocycle.
