Popov, Alexander I. published the artcileThe chemistry of halogens and of polyhalides. XI. Molecular complexes of pyridine, 2-picoline, and 2,6-lutidine with iodine and iodine halides, Recommanded Product: Pyridine Iodochloride complex, the publication is Journal of the American Chemical Society (1957), 4622-5, database is CAplus.
cf. C.A. 51, 7931a. Crystalline addition compounds of 2-picoline, 2,6-lutidine, and pyridine were prepared with ICI and IBr. The dissociation constants of these 6 compounds and of the 3 mol. complexes, amine-I2, were determined spectrophotometrically in CCl4 solutions The order of stability for the halogen series was ICI > IBr > I2, in agreement with the acidic strength of the halogens. The order of stability for the amine series was 2-picoline > pyridine > 2,6-lutidine. The low stability of 2,6-lutidine complexes is ascribed to steric effects. The absorption spectra of acetonitrile solutions of the 6 addition compounds had maximum at either the 227 mμ peak of ICl2–, or the 256 mμ peak of IBr2–, indicating an ionic dissociation in this polar solvent, as opposed to mol. dissociation in nonpolar CCl4.
Journal of the American Chemical Society 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, Recommanded Product: Pyridine Iodochloride complex.
Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com