'Zeoball' [Sn_(36)Ge_(24)Se_(132)]~(24-): A Molecular Anion with Zeolite-Related Composition and Spherical Shape

摘要

Ionothermal reactions of [Ge_4Se_(10)]~(4-)with SnCl_4-5H_2O yielded [BMMIm]_(24)[Sn_(36)Ge_(24)Se_(132)] (ZBT-1) and [BMIm]_(24)[Sn_(32.5)Ge_(27.5)Se_(132)] [ZBT-2; B(M)Mim = 1-butyl-(2,)3-(di)methylimidazolium]. These contain the largest known discrete polyanion consisting only of main-group elements. In spite of a zeolite-related composition, the 192-atom "zeoball" anion adopts a spherical shape, which has been unprecedented in the chemistry of zeolites and their homologues and relatives. Preliminary studies indicated that ZBT-1 traps Ⅰ_2 molecules and induces heterolytic Ⅰ-Ⅰ bond cleavage.