THE STRUCTURE OF COPPER(II) 5,7,12,14-TETRAMETHYLDIBENZO[B,I][1,4,8,11]-TETRAAZACYCLOTETRADECA-2,4,7,9,11,14-HEXAENEDIIDE

[CU(C22H22N4)], M(r) = 405.99, monoclinic, P2(1)/c, a = 14.318 (2), b = 16.427 (2), c = 16.299 (2) angstrom, beta = 100.01 (1)-degrees, V = 3775 (1) angstrom3, Z = 8, D(x) = 1.429 g CM-3, lambda(Cu K-alpha) = 1.54183 angstrom, mu = 16.88 cm-1, F(000) = 1688, T = 296 K, R = 0.0355, 4237 unique observations with I > 3-sigma(I). There are two crystallographically independent molecules but they are virtually identical. Each has the ligand, tmtaa, in a flattened saddle conformation, whereby the Cu ion can have nearly planar coordination. The Cu-N distances range from 1.922 (2) to 1.948 (2) angstrom with a mean value of 1.930 angstrom.