The effect of replacing carbonyl with acetonitrile on the reactivity of the bimetallic system [Mo2Cp2(μ-SMe)3(L)2]+ (L=CO, CH3CN). Crystal structure of [Mo2Cp2(μ-SMe)2(CH3CN)4](BF4)2
作者： P. Schollhammer , F.Y. Pétillon , J. Talarmin , Kenneth W. Muir
DOI: 10.1016/S0020-1693(98)00266-7
关键词: Protonation 、 Crystal structure 、 Electronic properties 、 Chemistry 、 Bimetallic strip 、 Sulfur 、 Stereochemistry 、 Moiety 、 Reactivity (chemistry) 、 Medicinal chemistry 、 Acetonitrile
摘要: Abstract [Mo2Cp2(μ-SMe)3(CH3CN)2](BF4) (1) reacts with H[BF4] in acetonitrile at room temperature to give the tetrakis (acetonitrile) compound [Mo2Cp2(μ-SMe)2(CH3CN)4](BF4)2 (3) through replacement of one SMe bridge by two terminal CH3CN ligands. In sharp contrast, carbonyl analogue [Mo2Cp2(μ-SMe)3(CO)2]+ (2) fails undergo a similar reaction. This suggests that electronic properties ancillary ligands L [Mo2Cp2(μ-SMe)3L2]+ moiety govern activation sulfur atom protonation reactions. An X-ray diffraction study shows 3 contains CpMo(CH3CN)2 units bridged groups and linked long Mo–Mo bond 3.000(1) A.
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