The crystal structure of a polyiodide complex with<i>N</i>-methylacetamide – KI.KI₃.6(CH₃CONHCH₃)

Abstract

The structure of KI. KI3.6(CH3CONHCH3) was determined. The crystals are trigonal, space group P31c, a= 12.2, c= 15-2/~. The unit cell contains two stocichiometric units. Ions I-and 13 alternate in arrays running parallel to the c axis. Cations K + occupy positions 000, 001, 00}, 00k. NH groups of N-methylacetamide are linked to I-ions, CO groups to K + cations. The presence of disorder in orientations of 13 ions is highly probable.