M 2(NMe 2)6的甲苯溶液与均三甲苯硫醇在80°C反应生成M 2(S-mes)6化合物(M = Mo和W),并释放HNMe 2。类似地,甲苯中的M 2(OBu t)6与均三甲苯硫醇在回流下反应,得到M 2(S-mes)6化合物。在所有情况下,反应还产生一些分解产物。室温下,化合物M 2(SBu t)2(NMe 2)4与均三甲苯硫醇在己烷中反应,得到M 2(S-mes)6种化合物,无明显副反应。M 2(S-mes)6化合物是仅由硫醇盐配体支撑的在钼和钨原子之间包含三键的化合物的第一个实例。相关的键距(Å)和角度(°)为:MM= 2.228(1)(Mo),2.312(2)(W); M + S = 2.325(2)(Mo),2.32(1)(W); MMS= 96.6(1)(Mo),97.2(6)(W)。报道了新化合物W 2(SBu t)2(NMe 2)4和W 2(OBu t)2(S-mes)4的制备。
DOI:
10.1016/s0277-5387(00)86996-x
作为产物:
描述:
1,2-(η3-C5H5)2W2(NMe2)4 、 W2(cyclooctatetraene)(NMe2)4 以
neat (no solvent) 为溶剂,
以66%的产率得到anti-1,2-W2(S-t-Bu)2(NMe2)4
参考文献:
名称:
Unexpected formation of anti-1,2-W2(SBut)2(NMe2)4 in the thiolysis of gauche-1,2-W2Cp2(NMe2)4 and W2COT(NMe2)4 with ButSH
摘要:
Thiolysis of W2Cp2(NMe2)(4) and W2COT(NMe2)(4) with excess Bu'SH leads to cleavage of the respective carbocyclic rings from the ditungsten center and formation of the compound anti-1,2-W-2(SBut)(2)(NMe2)(4) which was characterized via a single-crystal X-ray diffraction study. This product was found to be isostructural with its dimolybdenum analogue. The compound is a prototypical ethane-like dimer having a W equivalent to W bond distance of 2.3011(3) angstrom and thiolate ligands in an anti configuration about the W equivalent to W bond. The thiolysis reactions for both dimethylamide precursors are contrasted with the results of their respective alcoholysis reactions. (c) 2005 Elsevier B.V. All rights reserved.