Organometallics p. 4161 - 4169 (2001)
Update date:2022-08-04
Topics:
Liu, Sheng Hua
Yang, Sheng-Yong
Lo, Shu Tak
Xu, Zhitao
Ng, Weng Sang
Wen, Ting Bin
Zhou, Zhong Yuan
Lin, Zhenyang
Lau, Chak Po
Jia, Guochen
Protonation of [RuH(Cl)(PPh3)2(NBD)] (NBD = norbornadiene) in benzene with a limiting amount of HOTf gives [RuH(OTf)(PPh3)2(NBD)], norbornene, and [RuCl2(PPh3)2]2. In dichloromethane, [RuH(Cl)(PPh3)2(NBD)] reacts with a limiting amount of HOTf to give [RuH(OTf)(PPh3)2(NBD)], norbornene, and the trimetallic complex [Ru3Cl5(PPh3)6]OTf. In contrast, protonation of [OsH(Cl)(PPh3)2(NBD)] in benzene or dichloromethane with limiting HOTf only gives [OsH(OTf)(PPh3)2(NBD)]. In the protonation of [RuH(Cl)(PPh3)2(NBD)], the norbornene is likely produced through the intermediate [RuH(HCl)(PPh3)2(NBD)]OTf. The involvement of [RuH(HCl)(PPh3)2(NBD)]+ in the formation of norbornene is supported by theoretical calculations based on the B3LYP density functional theory. The fact that norbornene is not produced in the protonation of [OsH(Cl)(PPh3)2(NBD)] can be attributed to the stronger osmium-olefin interaction.
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Doi:10.1021/om010447w
(2001)Doi:10.1021/ja00766a044
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(1961)
