125841-35-2Relevant academic research and scientific papers
Synthesis and Characterization of Bis(xanthate) Complexes of Mo(II) and W(II). Crystal Structure of
Carmona, Ernesto,Contreras, Leopoldo,Sanches, Luis J.,Gutierrez-Puebla, Enrique,Monge, Angeles
, p. 2003 - 2010 (2007/10/02)
The reactions of with potassium xanthates, K(S2COR), give the red crystalline compounds t (4) in which the xanthate groups seem to act as ν3-(S,S',C) pseudo-allylic ligands.Formation of the dicarbonyl species is not detected, but the isopropyl derivative (5) can be obtained by carbonylation of (3) under relatively forcing conditions.The tungsten complex reacts similary with K(S2COR) but gives mixtures of (n=1 or 2).The monophosphine derivatives exhibit n.m.r. spectroscopic features similar to those of (1)--(5), but for the bis(phosphine) species a formulation containing uni- and bi-dentaxe xanthate groups, is proposed, aand this has been confirmed by an X-ray crystal structure determination of complex (9). Formation of the dithiocarbonate complexes, during the reactions leading to the above xanthates has also been observed.Complex (9) istriclinic, space group P1, with unit-cell constants a=8.775(2), b=14.027(5), c=11.806(5) angstroem,α=106.09(2), β=75.74(3), γ=109.06(4)deg, and Z=2.The structure was refined to an R value of 0.032 by using 2878 independent observed refrections.
