Os. Jung et al., Molecular networks consisting of dumbbell-cage motif: Structure and anion exchangeability of [Ag(Py2S)(2)center dot BF4](n)(Py2S=4,4 '-dipyridyl sulfide), CHEM LETT, (9), 2000, pp. 1012-1013
The silver(I) network with Py2S has the face-to-face (pi-pi) interactions t
o generate unusual dumbbell-cage motif. The BF4-counteranion within each ca
ge has been reversibly exchanged with the similar anions in size.