American Chemical Society
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First Examples of AuI−X−AgI Halonium Cations (X = Cl and Br)

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posted on 2003-06-20, 00:00 authored by Ke Zhang, Janardhana Prabhavathy, John H. K. Yip, Lip Lin Koh, Geok Kheng Tan, Jagadese J. Vittal
Novel {[(μ-PAnP)(AuX)2]2Ag}+SbF6- halonium ions (X = Cl, Br; PAnP = 9,10-bis(diphenylphosphino)anthracene) were synthesized from the reactions between (μ-PAnP)(AuX)2 and 1/2 mol equiv of AgSbF6. The compounds feature an unprecedented distorted Au4X4 dodecahedron which encapsulates a silver(I) ion at its center. The halonium ions are stabilized by collective actions of metallophilic Au−Ag, aromatic π−π, and Ag−X interactions.