Systematic Approach for the Construction of Niobium and Tantalum Sulfide Clusters
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https://figshare.com/articles/dataset/Systematic_Approach_for_the_Construction_of_Niobium_and_Tantalum_Sulfide_Clusters/3159529
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资源简介：
Treatment of the
imido complexes [MCl3(NR)py2] (R = tBu, 2,6-Me2C6H3;
M = Nb 1, 3; Ta 2, 4) (Xyl = 2,6-Me2C6H3) with (Me3Si)2S in a 1:1 ratio afforded the new cube-type
sulfide clusters [MCl(NR)py(μ3-S)]4 (R
= tBu, 2,6-Me2C6H3; M = Nb 5, 7; Ta 6, 8) with loss of Me3SiCl. Reactions of 5 and 6 with cyclopentadienyllithium in 1:4 ratio
resulted in the rupture of the coordinative M–S bonds and the
replacement of a pyridine molecule and a chlorine atom by an η5-cyclopentadienyl group in each metal center, affording the
compounds [M(η5-C5H5)(NtBu)(μ-S)]4 (M = Nb 9, Ta 10). These processes may develop through
formation of the complexes [M4(η5-C5H5)2(μ-Cl)(NtBu)4py2(μ3-S)2(μ-S)2](C5H5) (M = Nb 11, Ta 12), also obtained
by reaction of 5 and 6 with cyclopentadienyllithium
in 1:3 ratio. As further evidence, 11 and 12 led to complexes 9 and 10 by treatment
with one more equivalent of the lithium reagent. The structural study
of these metal sulfide clusters has been also performed by X-ray crystallography.
创建时间：
2016-04-12
