C21H21ClCuN3O5.5, triclinic, P (1) over bar (no. 2), a = 8.605(4) angstrom, b = 8.865(4) angstrom, c = 15.136(6) angstrom, alpha = 99.107(3)degrees, beta = 102.494(6)degrees, gamma = 106.571(7)degrees, V= 1050.2 angstrom(3), Z = 2, R-gt(F)= 0.028, wR...