A three-dimensional host framework with small tetragonal and large hexagonal channels

Abstract

Bis (cyclohexylamine-N) cadmium (II) bis {tricyanocadmate(II)}-toluene (1/1), [Cd(C 6 H 11 NH 2 ) 2 {Cd(CN) 3 } 2 ].C 6 H 5 CH 3 {or, alternatively, bis(cyclohexylamine-N)-hexacyanotricadmium(II) toluene solvate, [Cd 3 (CN) 6 (C 6 H 13 N) 2 ] n .nC 7 H 8 }, is a three-dimensional framework made up of octahedral and tetrahedral Cd sites (in a 1:2 ratio) bridged by cyanide groups. The octahedral Cd centers are coordinated by four cyano groups and two trans cyclohexylamine ligands, and the tetrahedral Cd centers are coordinated by four cyano groups. The host structure provides small tetragonal and large hexagonal channels, which are occupied, respectively, by the toluene guest molecules and the cyclohexylamine ligands coordinated to the octahedral Cd site.