Reactions of CS
<sub>2</sub>
and C(S)NPh Adducts of N‐Heterocyclic Carbenes with [Ru
<sub>3</sub>
(CO)
<sub>12</sub>
]: Remarkable Reactivity of These Betaines Involving One or Two C–S Bond Activation Processes
作者:Javier A. Cabeza、Pablo García‐Álvarez、M. Guadalupe Hernández‐Cruz
DOI:10.1002/ejic.201200245
日期:2012.6
[Ru4(μ4-κ2C,S-IMe–CS)(μ4-S)(μ-CO)2(CO)9] (1) and [Ru4(μ4-κ2C,N-TMe–CNPh)(μ4-S)(μ-CO)(CO)10] (2), have been isolated from reactions of [Ru3(CO)12] with 1 equiv. of the betaines IMe–CS2 (IMe = 1,3-dimethylimidazol-2-ylidene) and TMe–C(S)NPh (TMe = 3-methylthiazol-2-ylidene), respectively. Both products contain μ4-S ligands that arise from the unprecedented cleavage of the thiocarbonyl C–S bonds of the corresponding
两种结构相关的四核复合物,[Ru4(μ4-κ2C,S-IMe–CS)(μ4-S)(μ-CO)2(CO)9] (1) 和 [Ru4(μ4-κ2C,N-TMe– CNPh)(μ4-S)(μ-CO)(CO)10] (2),已从 [Ru3(CO)12] 与 1 当量的反应中分离出来。甜菜碱 IMe-CS2 (IMe = 1,3-二甲基咪唑-2-ylidene) 和 TMe-C(S)NPh (TMe = 3-methylthiazol-2-ylidene),分别。这两种产品都含有 μ4-S 配体,这些配体是由相应甜菜碱的硫代羰基 C-S 键前所未有的裂解产生的。六核衍生物 [Ru6μ3-κ4C2,N,SS(CH)2N(Me)CCNPh}2(μ4-S)2(CO)14] (3),也已从涉及 TMe-C 的反应中获得(S)NPh。该产物不仅来自甜菜碱硫代羰基 C-S 键的裂解,还来自噻唑环内 C-S 键的额外活化。