Crystal and molecular structure of [(C6H5)3Sb]3CuCl·CHC13

The X-ray crystallographic structure determination of [(C₆H₅)₃Sb]₃ Cu(I)Cl·CHC1₃ reveals that the compound crystallizes in the triclinic space groupP¯1 witha=18.827(3),b=14.279(3),c=14.399(3) Å,=84.43,=87.39(2), and=75.18(1)°,V=2734.7(9) ų,Z=2. Least-squares refinement based on 4689 independent observed data [(F_obs)²3(F_obs)²], resulted in a finalR value of 0.064. The cocrystallized solvent molecules were highly disordered. The coordination about Cu(I) of three Sb(C₆H₅)₃ molecules and one Cl ligand is approximately tetrahedral. The Cu-Cl distance, 2.235(5) Å, is extremely short in comparison to previously reported Cu-Cl distances in four-coordinate Cu(I) complexes. In keeping with the short Cu-Cl distance are very long Cu-Sb distances, av. 2.554(5) Å.