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Halogenation of Lewis acid/base stabilised phosphanylboranes

Schwan, Karl-Christian ; Vogel, Ulf ; Adolf, Ariane ; Zabel, Manfred ; Scheer, Manfred
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Date of publication of this fulltext: 07 Jun 2010 12:19


Abstract

The reaction pattern of the Lewis-acid/base stabilised phosphanylborane [(CO)5W(H2PBH2 · NMe3)] (1) with elemental halogens is comprehensively studied. The reaction with iodine and bromine leads to a selective halogenation at the tungstencarbonyl moiety under formation of [WX2(CO)4(H2PBH2 · NMe3)] (X = I (2), Br (3)). Whereas 2 is a stable product the brominated compound 3 dimerises easily to ...

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