Synthesis and characterization of Ag₂C₂·2AgClO₄·2H₂O: a novel layer-type structure with the acetylide dianion functioning in a µ₆-η¹,η¹:η²,η²:η²,η² bonding mode inside an octahedral silver cage

Abstract

In the novel double salt Ag₂C₂·2AgClO₄·2H₂O, the C₂^2– dianion [bond length 1.217(7) Å] is encapsulated inside an octahedral Ag₆ cage, and the resulting cationic [C₂@Ag₆] units share corners to generate metallic layers between which the perchlorate anions and aqua ligands are accommodated.

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