Novel dinuclear and trinuclear ruthenium clusters derived from 2-aryl-substituted indenylphosphines via C─H bond cleavage
Tong Meng, Jia Yuan, Zhi-Jun Han, Xue Luo, Qing-Guo Wu, Sheng-Hua Liu, Jian Chen and Guang-Ao Yu
Version of Record online: 10 NOV 2016 | DOI: 10.1002/aoc.3670
Treatment of Ru3(CO)12 with (2-phenyl-1H-inden-3-yl)dicyclohexylphosphine and (2-pyridyl-1H-inden-1-yl)dicyclohexylphosphine gave trinuclear ruthenium clusters (μ3-η1:η2:η5–2-phenyl-3-Cy2PC9H4)Ru3(CO)8 (1c) and [μ2-η1–2-(pyridin-2-yl)-3-Cy2PC9H6]Ru3(CO)9, respectively. (2-Mesityl-1H-inden-3-yl)dicyclohexylphosphine reacted with Ru3(CO)12 to give trinuclear ruthenium cluster [μ-2-mesityl-(3-Cy2PC9H5)](μ2-CO)Ru3(CO)9. 2-(Anthracen-9-yl)-1H–inden-3-yldicyclohexylphosphine reacted with Ru3(CO)12 to give dinuclear ruthenium cluster [μ2-η3:η3–2-(anthracen-9-yl)-3-Cy2PC9H6]Ru2(CO)5. They were fully characterized by spectroscopic and elemental analyses and single-crystal X-ray diffraction. Notably, 1c contains an unprecedented η1:η2:η5 coordination mode of the indenyl ligand.