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Updated: Apr 16, 2026

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of PhosphorusI
Published on: November 22, 2016
Bis(triphenylphosphine)silver(i) perrhenate, a cyclic dimer
F Deiser1, F Kraus, H Schmidbaur
1Department Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching b. M., Germany. h.schmidbaur@lrz.tum.de florian.kraus@chemie.uni-marburg.de.
Abstract:
The 1 : 4 and 1 : 2 complexes of silver perrhenate and triphenylphosphine, [(Ph3P)4Ag](+) ReO4(-) and [(Ph3P)2AgReO4]2, have been prepared and their structures determined in the solid state by X-ray diffraction. The former is composed of independent ions, while in the latter the ions are aggregated into cyclic dimers. The silver centers are tetracoordinated including contact with two bridging perrhenate anions, setting this structure apart from that of its gold analogue [(Ph3P)2Au](+) ReO4(-) where the gold centers are strictly two-coordinate.
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