Abstract
Abstract The mixed ligand complex (triphenylphosphino)bis(2-thioxohexamethyleneimine)copper(I) chloride, Cu(tclH)2(PPh3)Cl, has been synthesized and studied by spectroscopic methods and single crystal X-ray diffraction. It crystallizes in space group PI, with a = 11.110(1), b = 11.880(1), c = 11.994(1) A, α = 98.86(1), β = 90.92(1), γ = 96.71(1)° and Z = 2. The final R and Rw values are 0.065 and 0.071, respectively, for 3393 reflections with I > 3[sgrave](l). The copper atom is four coordinate, in a distorted tetrahedral environment. The mean value of the two Cu-S bonds is 2.334(3) A and the Cu-Cl bond distance is 2.394(2) A; the interbond angles around copper vary from 96.53(9) to 117.28(85°) A chair conformation of one of the seven membered thione rings is stabilized by an intramolecular hydrogen bond Nl-H…CI (3.192(7) A); the second analogous ring is disordered, exhibiting transitions from twisted to distorted chair conformations.
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