Fialkov, Ya. A. published the artcilePhysicochemical investigation of the system iodine chloride-pyridine, Safety of Pyridine Iodochloride complex, the publication is Zhurnal Obshchei Khimii (1948), 1205-14, database is CAplus.
The elec. conductivity-concentration curves at both 35 and 50° showed maximum at about 8 mol.% pyridine. At 35° they rose from 4.82 × 10-3 ohm-1 for pure ICl to a maximum of 21.39 × 10-3, and then dropped to 3.37 × 10-3 ohm-1 at 34.65 mol.% pyridine. Thermal analysis revealed 2 compounds in the system, having formulas C5H5N.ICl and C5H5N.2ICl and m.ps. of 128.50 and 35.10°, resp. There are 3 eutectics with concentrations (in mol.% pyridine) and temperatures, resp., of 20.73, -6.30°; 35.11, 23.60°; and 98.90, -50.20°. Electrolysis studies indicated that the following reactions occur: C5H5N + ICl = (C5H5-N.I)+ + Cl–. During electrolysis the reactions at the electrodes are: 2 (C5H5N.I)+ + 2e = 2C5H5N + I2, and 2Cl– = Cl2 + 2e.
Zhurnal Obshchei Khimii published new progress about 6443-90-9. 6443-90-9 belongs to iodides-buliding-blocks, auxiliary class Pyridines, name is Pyridine Iodochloride complex, and the molecular formula is C5H5ClIN, Safety of Pyridine Iodochloride complex.
Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com