Preparations and Structures of cis-[Mo2(S2CNC4H4)2(O2CCH3)2OPPh3] and [Mo2(S2PEt3)(O2CCH3)3OPEt3](BF4): Two Quadruply Bonded Dimers Involving Dithio Acid Ligands

Authors

Donald M. Baird, Bloomsberg UniversityFollow
Phillip E. Fanwick, University of Kentucky
Tom Barwick, Bloomsberg University

Document Type

Article

Publication Title

Inorganic Chemistry

ISSN

0020-1669

Publication Date

1985

Abstract

The dithiocarbamate of pyrrole (pdc) reacts with molybdenum acetate and triphenylphosphine oxide to give cis-[Mo_­2­(pdc)_­2­(O_­2­CCH_­3­)_­2­OPPh_­3­], which crystallizes with benzene with 1½ molecules of solvent per dimer in the triclinic space group P1 with unit cell parameters a = 11.777 (2) Å, b = 16.690 (2) Å, c = 11.535 (3) Å, α = 95.4 (2)°, β = 102.07 (2)°, γ = 84.23 (1)°, V = 2197.9 ų, and Z = 2. The reaction of molybdenum acetate with the zwitterionic S­₂­CPEt_­3­ in the presence of HBF_­4­ yields the dimer [Mo­­_­2­(S­_2­CPEt­₃­)(O_­2­CCH_­3­)_­3­OPEt_­3­](BF_­­_­4­) which crystallizes in the monoclinic space group P2_­1­/c with unit cell parameters a = 13.186 (2) Å, b = 14.403 (3) Å, c = 17.882 (4) Å, β = 106.97 (1)°, V = 3248.3 ų, and Z = 4. In both dimers, one molybdenum is axially coordinated to the oxygen of the phosphine oxide and the other to the oxygen of an acetate on an adjacent dimer. The Mo-O distances for the oxygen of the phosphine oxide are the shortest observed for axial coordination. Both sulfur ligands are in the dithio acid resonance form.

DOI

10.1021/ic00217a012

Volume

24

Issue

23

First Page

3753

Last Page

3758

Comments

©1985 American Chemical Society

NSUWorks Citation

Baird, D. M., Fanwick, P. E., & Barwick, T. (1985). Preparations and Structures of cis-[Mo2(S2CNC4H4)2(O2CCH3)2OPPh3] and [Mo2(S2PEt3)(O2CCH3)3OPEt3](BF4): Two Quadruply Bonded Dimers Involving Dithio Acid Ligands. Inorganic Chemistry, 24, (23), 3753 - 3758. https://doi.org/10.1021/ic00217a012. Retrieved from https://nsuworks.nova.edu/cnso_chemphys_facarticles/21