Zingaro, Ralph A. published the artcileInfrared studies of amine-halogen interactions, Application In Synthesis of 6443-90-9, the publication is Journal of Physical Chemistry (1960), 1705-11, database is CAplus.
The marked changes which are brought about in the 1000-cm.-1 region of the infrared spectrum of pyridine on the addition of I are generally characteristic of amine-halogen solutions Infrared studies on a series of solutions of amines and halogens revealed corresponding infrared shifts. Several new solid amine-halogen complexes were isolated, and, in every case, the frequency shifts in solution were correlated with infrared bands characteristic of the solids.
Journal of Physical Chemistry 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 C13H19Br2ClN2O, Application In Synthesis of 6443-90-9.
Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com