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:+86-25-52346955
Address:199,JIANYE ROAD,NANJING,CHINA
Shaanxi HuaTai Bio-fine chemical company Ltd
Contact:86-029-87862197
Address:No. 5, 3rd Floor, 29 Yanta North Road, Beilin Dist.
Nantong Kaixin Pharma Chemical Co.,Ltd.
Contact:86-513-85250786
Address:2-1103 Huachen Mansion, 111 Gongnong Road,Nantong, Jiangsu, China
Zhangjiagang Jianing Import & Export Co.,Ltd.
Contact:086-512-55379012 13913607595
Address:NO.1 Guotai North Road Zhangjiagang Economic Development Zone,215600,Jiangsu,China
Kaiping Genuine Biochemical Pharmaceutical Co.,Ltd.
Contact:+86-750-2881198
Address:No.1, Xinke Road, Shatang Town, Kaiping, Guangdong Province, P.R.China
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)
