Synthesis and crystal structure of tetramethylammonium µ-pentachloro-thiophenolato-bis[pentacarbonyltungstate(0)]

Abstract

The reaction of [NEt₄][W(CO)₅Cl] with Tl[SC₆Cl₅] and Ag[BF₄] yields the title complex [NEt₄][(CO)₅ W–SC₆Cl₅–W(CO)₅]. The i.r. spectrum of this complex in tetrahydrofuran has distinct carbonyl-stretching bands at 2 073w, 2 062m, 1 977m (sh), 1 941vs, 1 916s, and 1 876s cm^–1 which are consistent with a bent W–S–W bridge. X-Ray analysis using 2 770 diffractometer data (Mo-K_α radiation) shows that the W–S–W angle is 132.1°. Crystals are triclinic, space group P, with a= 13.682(3), b= 11.699(2), c= 10.597(2)Å, α= 91.71(2), β= 100.31(2), γ= 92.20(2)°, and Z= 2.