Synthesis, Characterization, and DFT Investigation of a Zinc(II)–Silver(I) Bimetallic Complex, [Zn(Dmen)2{Ag(CN)2}2][Zn(Dmen)2(H2O)2]{Ag(CN)2}2 (Dmen = N,N′-Dimethylethylenediamine)

Highly Efficient and Selective Recognition of Dicyanoaurate(I) by a Bambusuril Macrocycle in Water

“…The anions are bound at an angle (≈50°) with only half the anion perturbing into the anion‐binding cavity, exhibiting a single C−H⋅⋅⋅M interaction. Both anions are found in a bent conformation with angles less than 170°, not usually observed for Au [17–19] and even more rare in case of Ag [20–22] . The cyanide ligand found within the anion‐binding cavity is coordinated to the metal at an angle of 166°, in contrast with most of the literature values of 175°–180° observed for these fairly linear anions.…”

“…Both anions are found in a bent conformation with angles less than 170°, not usually observed for Au [17][18][19] and even more rare in case of Ag. [20][21][22] The cyanide ligand found within the anion-binding cavity is coordinated to the metal at an angle of 166°, in contrast with most of the literature values of 175°-180°o bserved for these fairly linear anions. In a majority of bambusuril anion complexes in the solid state, bound anions occupy the centre of the macrocycle, but in a few examples [23][24][25] the anions are found at the portals, interacting with water molecules which occupy the cavity centre.…”