C27H20CuN6O5, triclinic, P (1) over bar (no. 2), a = 10.4231(9) angstrom, b = 11.8744(11) angstrom, c = 13.5630(8) angstrom, alpha = 96.829(6)degrees, beta = 110.187(7)degrees, gamma = 106.805(8)degrees, V = 1463.0 angstrom(3), Z = 2, R-gt(F) = 0.0507, wR(ref)(F-2) = 0.1312, T = 105 K.