Oxidative-addition reactions of sulfur-sulfur and selenium-selenium bonds to dimolybdenum and ditungsten quadruple bonds Academic Article uri icon

abstract

  • Oxidative-addition chemistry of the quadruply bonded molybdenum and tungsten M2Cl4(dppm)2 dimers (dppm = bis(diphenylphosphino)methane) has been investigated by using diphenyl disulfide, diphenyl diselenide, dichloromethane, and chlorine as the oxidizing agents. The products to be discussed here are the following: W2(μ-SPh)2Cl4(dppm)2 (1), W2(μ-SPh)(μ-Cl)-Cl4(dppm)2 (2), W2(μ-SePh)2Cl4(dppm)2 (3), W2(μ-SePh)(μ-Cl)Cl4(dppm)2 (4), W2(μ-Cl)2Cl4(dppm)2 (5), Mo2(μ-SPh)(μ-Cl)Cl4(dppm)2 (6), and Mo2(μ-Cl)2Cl4(dppm)2 (7). The structural characterization of compounds 1, 4, and 6 is reported here. Pertinent crystal data are as follows: 1, P̅1, a = 12.991 (2) Å, b = 13.851 (3) Å, c = 11.693 (2) Å, α = 111.28 (2)°, β = 103.43 (2)°, γ = 89.03 (2)°, V= 1903 (1) Å3, W-W = 2.787 (1) Å; 4, Pna21, a = 39.335 (10) Å, b = 15.371 (4) Å, c = 11.774 (3) Å, V= 7119 (5) Å3, W-W = 2.708 (2) Å; 6, P21/n, a = 12.096 (4) Å, b = 24.474 (6) Å, c = 23.329 (5) Å, β = 100.73 (2)°, V = 6786 (3) Å3, Mo-Mo = 2.788 (1) Å. © 1988, American Chemical Society. All rights reserved.

author list (cited authors)

  • Canich, J., Cotton, F. A., Dunbar, K. R., & Falvello, L. R.

citation count

  • 28

publication date

  • March 1988