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Golden trefoils: Tris(alkyne)gold complex [(coct)3Au][SbF6] (see picture; 1‐SbF6) can be synthesized from cyclooctyne (coct) and AuSbF6 generated in situ. Treatment of AuCl with cyclooctyne led to the bis(alkyne)gold complex [Au(coct)2Cl] (2). DFT analysis indicates that the cyclooctyne ligands are net electron donors in 1 but overall electron acceptors in 2. AuSbF6 is shown to mediate [2+2+2] cycloaddition...
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