Structure of trans-Dichlorobis(7-chloro-1,3-dihydro-1-methyl-5-phenyl-2H-1,4-benzodiazepin-2-one)copper(II), the Copper(II) Complex of Diazepam

Article abstract of DOI:10.1107/S0567740882002593

, M_r = 703.9, triclinic, P<*>, a = 12.584(2), b = 17.108(2), c = 7.383(1) Angstroem, α = 96.57(1), β = 99.15(2), γ = 97.09(2)^o, U = 1542.6 Angstroem³ at 295 K, D_x = 1.516, D_m (flotation, trichloroethylene/carbon tetrachloride) = 1.534 Mg m^-3, Z = 2, μ(Mo Kα) = 1.12 mm^-1.The structure was determined from intensities of 5121 independent reflections and refined by block-diagonal least squares to an R = 0.031.The complexes are centrosymmetric, the Cu atoms being on the inversion centers.The coordination geometry around the Cu atom is square planar with two N atoms of the diazepam molecules and the two Cl atoms in trans position.