Es. Stoyanov, Unusual strong broadening of some absorption bands in the IR spectra of organic molecules bonded with H+ in disolvates [L-H+-L], MENDELEEV C, (5), 1999, pp. 190-191
An unusual feature has been detected in the IR spectra of the proton disolv
ates L-H+-L, namely strong broadening of the absorption bands of molecular
groups of the organic ligand L directly bonded with H+.