Complexes of benzophenone, benzophenone derivatives, or coumarin with alkali or ammonium iodides and iodine have been prepared and their conductivities studied. The organic sub-lattices involve six- or four-coordinate cation clathrated by the carbonyl compounds. The iodine sub-lattices consist of In chains in which I3 − and I5 − ions can be identified. AC (1 KHz) conductivities at room temperature vary from 10−1 to 10−6 Ω−1 cm−1, and are of a mixed ionic and electronic type. The most likely transport mechanism involves hopping processes in the polyiodine sub-lattice.
Molecular crystals and liquid crystals 88(1-4), pp.317-330