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Updated: Jan 1, 2026

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of PhosphorusI
Published on: November 22, 2016
Highly Selective Substitution and Insertion Reactions of Silylenes in a Metal-Coordinated Polyphosphide
Ravi Yadav1, Thomas Simler1, Stephan Reichl2
1Institute of Inorganic Chemistry , Karlsruhe Institute of Technology (KIT) , Engesserstraße 15 , 76131 Karlsruhe , Germany.
Abstract:
Selective substitution and insertion reactions of silylenes into the cyclo-P5 ring of [Cp*Fe(η5-P5)] are reported. The selective substitution of one P atom by an isoelectronic [LSi] fragment (L = PhC(NBu)2) leads to [(η4-P4SiL)FeCp*] and [LSi(Cl)═P-SiL(Cl)2]. To elucidate the reaction mechanism, [{LSi(N(SiMe3)2)}{(η4-P5)FeCp*}], in which the silicon atom binds to the cyclo-P5 ring, was synthesized as a model compound for the reaction intermediate. The insertion of [LSi-SiL] into the cyclo-P5 ring of [Cp*Fe(η5-P5)] resulted in [{η4-P5(SiL)2}FeCp*] featuring a cyclo-P5(SiL)2 ring, which corresponds to the largest silicon-polyphosphorus ring known in a complex.
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