In a study concerning the reactivity of the [M3(CO)12] (M = Ru or Os) clusters towards the [2.2]parabenzoindenophane (L1) and anti-[2.2]indenophane (L2) ligands, the molecular structures of three new compounds [Ru4H(CO)9(L1 â H)] 1, [Os4H(CO)9(L1 â H)] 2 and [Ru4H(CO)9(L2 â H)] 3 were established by single crystal X-ray diffraction analyses. In all cases it was observed that the ligand had undergone CâH bond activation with the resultant indenyl and hydride fragments retained upon the metal cluster in the facial µ3-η5â¶Î·2â¶Î·2 and edge-bridging µ modes, respectively. Surprisingly, despite possessing two indene faces for cluster association, L2 also appears only to be able to utilise one of them.
在一项关于[M3(CO)12](MÂ =Â Ru 或 Os)簇对[2.2]对苯并
茚二酮(L1)和反[2.通过单晶 X 射线衍射分析,确定了三种新化合物 [Ru4H(CO)9(L1Â â H)] 1、[Os4H(CO)9(L1Â â H)] 2 和 [Ru4H(CO)9(
L2Â â H)] 3 的分子结构。在所有情况下,
配体都经历了 CâH 键活化,由此产生的
茚基和
氢化物片段分别以面µ3-Î-5â¶Î-2â¶Î-2 和边缘桥接µ 模式保留在
金属簇上。令人惊讶的是,尽管
L2 具有两个
茚基面用于与
金属簇结合,但它似乎只能利用其中的一个面。