issue contents
April 2024 issue
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Cover illustration: The present report presents the structures of ten trialkylphosphane chalcogenide complexes of gold(III) trihalides, with general formula (tBu3–niPrnP=E)AuX3, where X is Cl or Br, and the chalcogenide E is restricted to S or Se. The paper is a continuation of an extensive study on phosphane chalcogenides of the type R3P=E, where the R groups are alkyl or aryl (and may also be mixed) [Acta Cryst. (2024). E80, 34–49]. All compounds crystallize with one formula unit in the asymmetric unit and square-planar coordination geometries at the gold(III) centres, while the chalcogenide atoms show approximately tetrahedral angles. The molecular packing is analysed in terms of various short contacts such as weak C—H⋯X hydrogen bonds and contacts between the heavier atoms. See: Upmann, Bockfeld, Jones & Târcoveanu [Acta Cryst. E80, 355–369].
research communications
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