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Reactions of PhIX2 I(iii) oxidants with heavy triphenyl pnictines

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Abstract

The reactions of [PhI(pyridine)2]2+, PhI(OAc)2 and PhI(OTf)(OAc) with Ph3As, Ph3Sb and Ph3Bi are described. The reactions of [PhI(pyridine)2]2+ with Ph3Sb and Ph3Bi afford dicationic Pn(V) complexes ligated by pyridine in one step. These were previously reported by Burford in multi-step syntheses. Reactions with PhI(OAc)2, which were already known for Sb and Bi giving Pn(V) diacetates, were confirmed to give the same type of compound for As. Reactions with PhI(OAc)(OTf) were less selective, resulting in the isolation of iodonium cations [Ph–I–Ph]+ for As and Bi, while Ph3Sb gave an oxobridged di-antimony species characteristic of the decomposition of a high valent triflate bound species.

Graphical abstract: Reactions of PhIX2 I(iii) oxidants with heavy triphenyl pnictines

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Article information


Submitted
02 Mar 2020
Accepted
20 May 2020
First published
20 May 2020

Dalton Trans., 2020, Advance Article
Article type
Paper

Reactions of PhIX2 I(III) oxidants with heavy triphenyl pnictines

S. Egalahewa, A. Aprile and J. L. Dutton, Dalton Trans., 2020, Advance Article , DOI: 10.1039/D0DT00777C

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