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bimetallic clusters, bismuth, cluster compounds, copper, palladium, platinum, Aluminum compounds, Bismuth compounds, Bromine compounds, Copper compounds, Ionic liquids, Platinum, Positive ions, Single crystals, Antiprisms, Bimetallic clusters, Black crystals, Cluster compounds, Complex salts, Condition, Ionothermal synthesis, Isostructural, Lewis acidic ionic liquid, X- ray diffractions, Palladium
Abstract:
The reaction of Bi, BiBr3, and CuBr in the Lewis-acidic ionic liquid [BMIm]Br·4AlBr3 (BMIm = 1-n-butyl-3-limidazolium) at 180 °C yielded air-sensitive, shiny black crystals of (CuBi8)[AlBr4]2[Al2Br7]. Crystals of [MBi10][AlCl4]4 (M = Pd, Pt) were obtained by reacting Bi, BiCl3, and MCl2 under similar conditions. The structures have been determined by X-ray diffraction on single-crystals and were found to be very similar to that of the known analogues with other halogens, although not isostructural. In crystals of the complex salts, polyhedral bimetallic clusters (CuBi8)3+ or [MBi10]4+ are embedded in matrices of halogenidoaluminate anions. The heteroatomic nido-cluster (CuBi8)3+ consists of a (Bi8)2+ square antiprism η4-coordinating a copper(I) cation. In the cluster cation [MBi10]4+, the metal atoms M center a pentagonal antiprism of bismuth atoms. © 2021 Walter de Gruyter GmbH, Berlin/Boston 2021.
