Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0022-328X(01)01031-2
Title: Chemistry of cyclopentadienyl tricarbonylchromium dimer. Cleavage of bis(thiophosphoryl)disulfanes. Syntheses and X-ray crystal structures of CpCr(CO)2(S2P(OR)2), CpCr(S2P(OR)2)2 and Cr(S2P(OR)2)3 (R=iPr)
Authors: Goh, L.Y. 
Weng, Z. 
Leong, W.K. 
Haiduc, I.
Lo, K.M.
Wong, R.C.S.
Keywords: 15-Electron chromium(III)
Crystal structures
Cyclopentadienylchromium
Di-isopropyldithiophosphate
Phosphorodithioato
Issue Date: 10-Aug-2001
Source: Goh, L.Y., Weng, Z., Leong, W.K., Haiduc, I., Lo, K.M., Wong, R.C.S. (2001-08-10). Chemistry of cyclopentadienyl tricarbonylchromium dimer. Cleavage of bis(thiophosphoryl)disulfanes. Syntheses and X-ray crystal structures of CpCr(CO)2(S2P(OR)2), CpCr(S2P(OR)2)2 and Cr(S2P(OR)2)3 (R=iPr). Journal of Organometallic Chemistry 631 (1-2) : 67-75. ScholarBank@NUS Repository. https://doi.org/10.1016/S0022-328X(01)01031-2
Abstract: The facile reaction of [CpCr(CO)3]2 (Cp=η5-C5H5) with one mole equivalent of bis(thiophosphoryl)disulfanes, (RO)2P(S)SSP(S)(OR)2 (R=iPr), at ambient temperature, led to the isolation of dark-purple solids of CpCr(CO)2(S2P(OR)2) (2, yield: 32%) and blue solids of CpCr(S2P(OR)2)2 (3, yield: 30%). At 70-80°C, the reaction gave 3 (yield: 35%) and Cr(S2P(OR)2)3 (4, yield: 11%). 1H-NMR spectral studies demonstrated that 3 and 4 were derived from 2, the primary product. X-ray diffraction analyses showed that 2 possesses cis CO ligands and a bidentate SP(S)(OR)2 ligand, while 3 contains both an unidentate and a bidentate ligand, and in 4 the Cr atom is octahedrally symmetrically coordinated to the three bidentate phosphorylthioato ligand. Variable temperature 1H and 31P spectral studies showed the occurrence of very rapid unidentate-bidentate exchange between the ligands in 3 in the temperature range -65 to 80°C. It is also shown that the CrCr complex [CpCr(CO)2]2 reacted with [(iPrO)2P(S)S]2, albeit much less readily, generating 3 as the eventual product. © 2001 Elsevier Science B.V.
Source Title: Journal of Organometallic Chemistry
URI: http://scholarbank.nus.edu.sg/handle/10635/93293
ISSN: 0022328X
DOI: 10.1016/S0022-328X(01)01031-2
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

15
checked on Feb 15, 2018

WEB OF SCIENCETM
Citations

14
checked on Feb 7, 2018

Page view(s)

33
checked on Feb 13, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.