Rubenacker, Gerald V. published the artcileNitrogen-14 nuclear quadrupole resonance spectra of coordinated pyridine. An extended evaluation of the coordinated nitrogen model, SDS of cas: 6443-90-9, the publication is Inorganic Chemistry (1980), 19(2), 392-8, database is CAplus.
The 14N NQR spectra at 77 K of several solid pyridine complexes with a wide range of Lewis acids were measured by a double-resonance method. The data are interpreted in terms of a coordinated N model, which permits an estimation of Ï, the occupancy of the N donor orbital directed toward the Lewis acid. The values observed for Ï in a series of pyridinium salts permit an ordering of the strength of H bonding to the anions: HSO4– â?NO3– > Cl– > ClO3– > Br– > ClO4–. The 14N NQR data correlate well with the NQR data for the H-bonded 2H in these compounds From comparisons of Ï values it is possible to order the acidities of the Lewis acids as follows: Li+ < Ag+ < Cd2+ â?Mo(0) â?Cr(0) < Zn2+ â?Hg2+ â?Fe(0) < BR3 < BCl3 < BBr3 < SO3 < H+ â?CH3+. The relative positions in a few cases are uncertain because an insufficient number of complexes was studied to date.
Inorganic 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 C5H5ClIN, SDS of cas: 6443-90-9.
Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com