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Adducts of Silicon Tetrafluoride with Aminocyclophosphazenes : Synthesis and Characterization

Suresh, Bettadapura S and Chandrasekhar, Vadapalli and Padma, Doddaballapur K (1984) Adducts of Silicon Tetrafluoride with Aminocyclophosphazenes : Synthesis and Characterization. In: Journal of the chemical society-dalton transactions (9). pp. 1787-1790.

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Stable solid adducts of SiF4 with the following aminocyclophosphazenes have been synthesized : N3P3(NHCH2CH2NH)(NMe2)4(,1 ) ; N3P3(NHCH2CH2NH)C14(,2 ) ; N3P3(NMe2)4C12(,3 ) ; N3P3(NHMe),,(4) ; N3P3(NMe2),, (5) ; N,P,(NHMe),, (6) ; N4P4(NMe2),, (7) ; and N,P,(NHBu'),, (8). They have been characterized by elemental analysis, i.r., and n.m.r. ( H, 31 P, and 19F) spectroscopy. The composition of the adducts varies depending on the ring size and also on the nature of the substituents on the phosphorus. The number of SiF4 molecules accommodated by the ligands is larger when the ring size is large, while it is less when the ligands contain chlorine. Except in the cases of ligands (1) and (2), bonding is through the ring nitrogens. With (I), both exocyclic nitrogen and ring nitrogen atoms, and with (2) only exocyclic nitrogen atoms, participate in co-ordination. In these two cases the silicon is six-co-ordinated, while in the other cases it is five-co-ordinated.

Item Type: Journal Article
Publication: Journal of the chemical society-dalton transactions
Publisher: Royal society of chemistry
Additional Information: Copyright of this article belongs to Royal society of chemistry.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 16 Jun 2009 07:36
Last Modified: 19 Sep 2010 05:34
URI: http://eprints.iisc.ac.in/id/eprint/20744

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