Crystal structure of a 1 : 1 complex between silver iodide and morpholine

Abstract

Crystals of the 1 : 1 complex between silver iodide and morpholine (AgI, C₄H₉NO) are monoclinic, a= 18.14 ± 0.03, b= 4.528 ± 0.010, c= 9.180 ± 0.020 Å, β= 95.9 ± 0.10, space group C2, Z= 4. The structure was solved by use of diffractometer data by the heavy-atom method and refined by full-matrix least-squares to R′ 0.048 for 311 independent reflections. The structure has bands of coplanar iodide ions running parallel to the b axis, arranged within the band at the corners of nearly equilateral triangles. The Ag ions are places alternately above and below successive I₃ triangles. Chair-shaped morpholine molecules are attached to the strings by donation of the nitrogen lone-pair to each silver. Along the strings adjacent morpholine molecules are NH ⋯ O bonded to each other.