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Ring Compounds Based on Phosphorus and Silicon

Various ring systans containing both Si and P atoms can be obtained by reacting a chlorosilane with an appropriate metal phosphine. A three-monbered ring can be obtained from a diphosphine and a dichlorosilane (9.216). If silicon tetrachloride is used in place of the latter, the product is a [Pg.744]

Some other ring compounds are synthesised as in Equations 9.219 and 9.220. The four- and six-membered products in Equation 9.220 exist in equilibrium, but the two compounds can be isolated by crystallisation at different temperatures. [Pg.745]

A butterfly-shaped double ring compound can be obtained from four-membered silaphosphetanes by route (9.221). A spiran-type silaphosphetane results from reaction (9.222) [27,28]. [Pg.745]

Rings with Si-Si and P-P linkages, of composition (PhP)2(SiMe2) where n = 2,3,4, are obtained by reacting lithium diphenylphosphide with a dichlorosilane, for example, Cl(SiMe2) Cl (9.223). A ring with only Si-Si and Si-P linkages is obtainable by reaction (9.224). [Pg.745]

Methanides of type (9.227) can be made in which the Si-P bonds have a trigonal bipyramidal configuration with an unshared electron pair in one equatorial arm. [Pg.746]


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Base compounds

Based compounds

Phosphorus and compounds

Phosphorus and silicon

Phosphorus bases

Phosphorus compounds

Phosphorus rings

Phosphorus-based

Silicon-based

Silicon-phosphorus rings

Silicone compounds

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