Vibrational, P-31 NMR and crystallographic studies of diiodine adducts of some bidentate tertiary phosphine sulfides
Apperley, David C., Bricklebank, Neil, Hursthouse, Michael B., Light, Mark E. and Coles, Simon J. (2001) Vibrational, P-31 NMR and crystallographic studies of diiodine adducts of some bidentate tertiary phosphine sulfides. Polyhedron, 20, (15-16), 1907-1913. (doi:10.1016/S0277-5387(01)00773-2).
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Description/Abstract
Treatment of bis(dipbenylphosphino)methane disulfide (dppmS) or bis(diphenylphosphino)ethane disulfide (dppeS) with diiodine in dichloromethane yields the adducts dppmS .I-4 1 and dppeS .I-4 2, respectively, whose structures have been solved by X-ray crystallography. Compounds 1 and 2 consist of discrete molecular units containing bent P-S-I and linear S . . .I-I geometries that can be interpreted in terms of donation of electron density from sulfur to diiodine. Consistent with this interpretation, the P-S bonds are lengthened compared to the unco-ordinated phosphine sulfides, and the I-I bonds are lengthened compared to unco-ordinated diiodine. Both compounds can therefore be described as 'charge-transfer' complexes. The two S . . .I-I moieties in 1 are inequivalent having markedly different bond lengths and angles. In 2 both S . . .I-I moieties are identical. The structural features of 1 and 2 are in accordance with Raman and P-31 CP MAS NMR data.
| Item Type: | Article |
|---|---|
| ISSNs: | 0277-5387 (print) |
| Related URLs: | |
| Keywords: | tertiary phosphine sulfide, bis(diphenylphosphino)methane disulfide, bis(diphenylphosphino)ethane disulfide, diiodine, charge-transfer complexes |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | University Structure - Pre August 2011 > School of Chemistry |
| Item ID: | 39124 |
| Date Deposited: | 21 Jun 2006 |
| Last Modified: | 01 Jun 2011 04:27 |
| Contributors: | Apperley, David C. (Author) Bricklebank, Neil (Author) Hursthouse, Michael B. (Author) Light, Mark E. (Author) Coles, Simon J. (Author) |
| Date: | 2001 |
| Status: | Published |
| Contact Email Address: | n.bricklebank@shu.ac.uk |
| URI: | http://eprints.soton.ac.uk/id/eprint/39124 |
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