Crystal structure of a complex between silver iodide and piperidine

Abstract

Crystals of the complex between silver iodide and piperidine (Agl, C₅H₁₁N) are orthorhombic, a= 20·220, b= 8·226, and c= 10·240 Å, space group Pcna with Z= 8. The intensity data were measured by use of an automatic diffractometer and molybdenum radiation. The structure was refined by full-matrix least-squares methods to wR= 0·039 for 380 statistically significant reflections. The compound consists of tetrahedral clusters of iodide ions with silver ions embedded into the faces of the tetrahedra. There are ‘short’ Ag⋯Ag distances ranging from 2·980–3·095 Å within the clusters. The piperidine molecules are linked to the clusters by co-ordination of nitrogen to silver. Hydrogen bonding between the hydrogen atom attached to nitrogen and an iodide ion in an adjacent cluster is possible.