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Article: Preparation, spectroscopic characterization, and deprotonation reactions of Si[(NHR).sub.4] (R = i-Pr, t-Bu, p-tolyl)--EPR identification of persistent radicals formed by oxidation of polyimidosilicates.
- Article from:
- Canadian Journal of Chemistry
- Article date:
- January 1, 2006
- Author:
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Introduction
An ongoing area of research in main group chemistry is the synthesis and characterization of imido [[NR].sup.2-] (R = alkyl, aryl) analogues of common p-block oxoanions such as sulfate and phosphate (1-3). The chemistry of the tetraimidophosphate trianion [[P[(NR).sub.4]].sub.3-] , formally [isoelectronic.sup.2] with orthophosphate [[P[O.sub.4]].sup.3-], has been extensively explored. Both main group (4-7) and transition-metal (8) derivatives are known; the coordination behaviour (6, 7) and radical chemistry (6, 7, 9, 10) of this important member of the family of polyimido anions have been examined.
In contrast, the chemistry of the ...