Novel dinuclear and trinuclear ruthenium clusters derived from 2-aryl-substituted indenylphosphines via C-H bond cleavage

作者：Meng, Tong; Yuan, Jia; Han, Zhi-Jun; Luo, Xue; Wu, Qing-Guo; Liu, Sheng-Hua^*; Chen, Jian; Yu, Guang-Ao^*

来源：Applied Organometallic Chemistry, 2017, 31(8): e3670.

DOI：10.1002/aoc.3670

• C-H activation
• indenylphosphine
• ruthenium

Treatment of Ru-3(CO)(12) with an equivalent of (2-phenyl-1H-inden-3-yl) dicyclohexylphosphine (1) and (2-pyridyl-1H-inden-1-yl) dicyclohexylphosphine (4) in refluxing heptane gave the novel trinuclear ruthenium clusters (mu(3)-eta(1):eta(2):eta(5)-2-phenyl-3-Cy2PC9H4) Ru-3(CO)(8) (1c) and [mu(2)-eta(1)-2-(pyridin-2-yl)-3-Cy2PC9H6] Ru-3(CO)(9) (4a), respectively, via C-H bond cleavage. (2-Mesityl-1H-inden-3-yl) dicyclohexylphosphine (2) reacted with Ru-3(CO)(12) in refluxing heptane to give the trinuclear ruthenium cluster [mu-2-mesityl-(3-Cy2PC9H5)](mu(2)-CO) Ru-3(CO)(9) (2c) via C-H bond cleavage and carbonyl insertion. 2-(Anthracen-9-yl)-1H-inden-3-yldicyclohexylphosphine (3) reacted with Ru-3(CO)(12) in refluxing heptane to give the dinuclear ruthenium cluster [mu 2-.eta(3):eta(3)-2-(anthracen-9-yl)-3-Cy2PC9H6] Ru-2 (CO)(5) (3a). The structures of 1c, 2c, 3a and 4a were fully characterized using IR and NMR spectroscopy, elemental analysis and single-crystal X-ray diffraction. These results suggest that the 2-aryl substituent on the indenyl ring has a pronounced effect on the reaction and coordination modes of Ru-3(CO)(12).

• 出版日期2017-8
• 单位华中师范大学