Triangular cationic belts [Au3{PPh2(C6H4)nPPh2}3]3+ enclose bimetallic clusters [AuwAgx(C2Ph)yXz] in molecular aggregates obtained by halide (X)-directed assembly of multicomponent systems. The largest aggregate consists of a central metal alkynyl halide cluster [Au18Ag30(C2Ph)36Cl9]3+ inside a [Au3{PPh2(C6H4)5PPh2}3]3+ belt and comprises 51 metal atoms (see picture; Ag green, Au yellow, Cl violet, P red).
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Koshevoy et al. (2010) studied this question.
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