Issue 67, 2023

Ring expansion vs. addition – reactivity of a cyclo-P4 complex towards pnictogenium cations

Abstract

A systematic study on the reactivity of the cyclo-P4 complexes [CpRTa(CO)24-P4)] towards pnictogenium cations results in the formation of functionalised interpnictogen cations. Phosphenium ions insert into one of the P–P bonds to give ring-expanded cyclo-P5R2 products. In contrast, an arsenium-functionalised P4AsCy2 ligand displays an interesting borderline case between ring expansion and coordination, while stibenium cations afford addition products. Tuning of the steric and electronic properties of the stibenium ion shows a drastic influence on the reaction outcome.

Graphical abstract: Ring expansion vs. addition – reactivity of a cyclo-P4 complex towards pnictogenium cations

Supplementary files

Article information

Article type
Communication
Submitted
12 Jūl. 2023
Accepted
26 Jūl. 2023
First published
26 Jūl. 2023

Chem. Commun., 2023,59, 10117-10120

Ring expansion vs. addition – reactivity of a cyclo-P4 complex towards pnictogenium cations

C. Riesinger, A. Erhard and M. Scheer, Chem. Commun., 2023, 59, 10117 DOI: 10.1039/D3CC03369D

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