Journal of the Chemical Society, Dalton Transactions p. 3843 - 3851 (1996)
Update date:2022-07-29
Topics:
Ang, How-Ghee
Ang, Siau-Gek
Zhang, Qi
The reaction of pentaphenylcyclopentaphosphane (PPh)5 with [Os3(CO)10(NCMe)2] in 1:1 molar ratio afforded a pair of inversion isomers, 1 and 2, with the molecular formula [Os3(Cp)10{(PPh)5}]. A similar reaction in 3:1 molar ratio gave a different cluster [Os3(CO)10{(PPh)5}2] 3. The clusters [Os3(CO)11{(PPh)5}] 4 and [{Os3(CO)11}2{(PPh)5}] 5 were obtained from reaction of (PPh)5 with [Os3(CO)11(NCMe)]. Compound 4 reacted with [Ru3(CO)11(NCMe)] to generate the cluster [(OC)11Os3{(PPh)5}Ru3(CO) 11] 6. Compounds 4 and 5 were converted into 1 and 2 when heated in sealed tubes at 80°C. In clusters 1 and 2 the triosmium unit is chelated by the cyclophosphane ligand through the 1,3-phosphorus atoms of the ring, and their main difference lies in the orientations adopted by the aromatic rings attached to the unco-ordinated phosphorus. Variable-temperature NMR studies showed that the two inversion isomers can undergo interconversion. In 4 one osmium atom of the triosmium unit is co-ordinated to one phosphorus atom of the cyclophosphorus ligand, while in 5 the two triosmium units are each linked via co-ordination of one Os atom to a phosphorus atom of the cyclophosphane ring. With the help of two-dimensional 31P NMR spectroscopy, the correlations between phosphorus atoms for clusters 1, 2, 4 and 5 were established.
Contact:18669908765
Address:Zibo City, Shandong Province, P.R.China
JiangXi Keyuan Biopharma Co., LTD.
Contact:+86-563-6833666
Address:Guangde Fine Chemical Zone, Anhui Province, China
Chengdu Boon Stream Chemical Industry Co.,Ltd.
Contact:+86-28-83156758
Address:No.859,Dongzikou Road,Jinniu District,Chengdu,Sichuan,P.R.China
Wuhan Hanye Chemical New Material Co.,Ltd
Contact:+86-27-85308141
Address:LiuDian, Panlongcheng Economic Development Zone, HuangPi district, Wuhan, Hubei 430311 P.R.China
Antaeus Bio-technology Co., LTD(expird)
Contact:021-31252569
Address:shanghai pudong
Doi:10.1021/jm960547h
(1996)Doi:10.1016/S0960-894X(03)00304-4
(2003)Doi:10.1039/a905276c
(1999)Doi:10.1002/ejoc.202000134
(2020)Doi:10.1039/c8ob02352b
(2018)Doi:10.1016/S0022-328X(00)90603-X
(1970)
