Thirupathi, N. ; Krishnamurthy, S. S. ; Nethaji, M. (1999) Cyclotriphosphazanes and bicyclic tetraphosphapentazanes Phosphorus, Sulfur, and Silicon and the Related Elements, 144 (1). pp. 265-268. ISSN 1042-6507
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Official URL: http://www.informaworld.com/index/791530747.pdf
Related URL: http://dx.doi.org/10.1080/10426509908546232
Abstract
An unusual ring contraction-rearrangement occurs in the reactions of trifluoroethoxy/aryloxy λ 3-cyclotriphosphazanes and the bicyclic phosphazane, (EtN)5P4(OPh)2 (L) with tetrachloro-1,2-benzoquinone (TCB) to give λ5-cyclodiphosphazanes. The bicyclic phosphazane monoxide, (EtN)5P4(O)(OPh)2 (L') undergoes oxidative addition with TCB with retention of the P4N5 ring. Treatment of bicyclic phosphazane L and its monoxide L' with [Mo(CO)4(NBD)] (NBD = norbornadiene) gives the chelate complexes [Mo(CO)4(P-P)] (P-P = L or L'). The structures of the products have been elucidated by high field 31P NMR and X-ray crystallographic studies.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Taylor and Francis Ltd. |
| Keywords: | Cyclotriphosphazanes; Bicyclic Tetraphosphapentazanes; P-N Ring Conformation; Negative Hyperconjugation |
| ID Code: | 17816 |
| Deposited On: | 16 Nov 2010 12:39 |
| Last Modified: | 08 Jun 2011 06:44 |
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