Kumara Swamy, K. C. ; Burton, Sarah D. ; Holmes, Joan M. ; Day, Robehta O. ; Holmes, Robert R. (1990) Cyclic oxyphosphoranes with six- and seven-membered rings Phosphorus, Sulfur, and Silicon and the Related Elements, 49 (1). pp. 367-372. ISSN 1042-6507
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Official URL: http://www.informaworld.com/smpp/content~db=all~co...
Related URL: http://dx.doi.org/10.1080/10426509008038981
Abstract
X-ray and variable temperature NMR investigations of cyclic pentaaxyphosphoranes reveal a preference of six- and seven-membered rings for apical-equatorlal orientations of trigonal bipyramids. Saturated six-membered rings prefer a boat conformation. Apical-equatorial ring pseudorotations are more facile for five-membered rings, whereas ligand exchange via diequatorial ring placement is more facile for the larger rings. Application to enzymatic reactions of cyclic AMP is emphasized.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Taylor and Francis Ltd. |
| ID Code: | 29628 |
| Deposited On: | 23 Dec 2010 05:44 |
| Last Modified: | 07 Jun 2011 06:25 |
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