Please use this identifier to cite or link to this item:
|Title:||Phosphinobenzyl- and aryl-silanes and their triosmium cluster carbonyl derivatives|
|Authors:||Ang, H.G. |
|Citation:||Ang, H.G., Chang, B., Kwik, W.L. (1992). Phosphinobenzyl- and aryl-silanes and their triosmium cluster carbonyl derivatives. Journal of the Chemical Society, Dalton Transactions (14) : 2161-2169. ScholarBank@NUS Repository. https://doi.org/10.1039/DT9920002161|
|Abstract:||The Grignard reagents MgR(Br) (R = C6H4CH2SiMe2H-o or C6H4CH2SiMeH2-o) have been found to undergo unusual reactions with Ph2PCl to afford o-Ph2PC6H4CH2SiMe2H I and o-HMe2SiC6H4CH2PPh2 II and o-Ph2PC6H4CH2SiMeH2 III and o-H2MeSiC6H4PPh2 IV respectively. Reactions of the respective bidentate ligands I, II, III and IV with [Os3(CO)10(MeCN)2] gave the novel triosmium cluster [Os3(μ-H)(CO)10(L-L)] 1, 2, 3 and 4 involving cleavage of one Si-H bond. Similar reactions of ligands II and IV with [Os3(μ-H)2(CO)10] afforded two new clusters [Os3(μ-H)3(CO)8(L-L)] 5 and 6 respectively. The structures of 1, 2, 4 and 5 have been determined by single-crystal X-ray diffraction techniques. In each case, the ligand assumes a chelating mode across the long edge of the osmium triangle which is also bridged by a hydride. The high-performance liquid chromatographic behaviour of these clusters has also been determined and correlated with the size and nature of the ligands.|
|Source Title:||Journal of the Chemical Society, Dalton Transactions|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Sep 18, 2018
WEB OF SCIENCETM
checked on Sep 3, 2018
checked on Aug 17, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.