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Cyclotriphosphazanes and bicyclic tetraphosphapentazanes

Thirupathi, N and Krishnamurthy, SS and Nethaji, M (1999) Cyclotriphosphazanes and bicyclic tetraphosphapentazanes. In: Phosphorus Sulfur And Silicon And The Related Elements, 146 . pp. 265-268.

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Abstract

An unusual ring contraction-rearrangement occurs in the reactions of trifluoroethoxy/aryloxy lambda(3)-cyclotriphosphazanes and the bicyclic phosphazane, (EtN)(5)P-4(OPh)(2) (L) with tetrachloro-1,2-benzoquinone (TCB) to give lambda(5)-cyclodiphosphazanes. The bicyclic phosphazane monoxide, (EtN)(5)P-4(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 P-31, NMR and X-ray crystallographic studies.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Taylor and Francis Group.
Keywords: Cyclotriphosphazanes;Bicyclic tetraphosphapentazanes;P-N ring conformation;Negative hyperconjugation
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 01 Jun 2009 05:59
Last Modified: 19 Sep 2010 05:01
URI: http://eprints.iisc.ernet.in/id/eprint/18306

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