EXAMINATION OF THE RATIO UPSILON-D-UPSILON-H FOR INFRARED BANDS ASSIGNED TO THE C-H(D) AND RING VIBRATIONS IN METAL-COMPLEXES OF QUINOLINE, PYRIDINE, ANILINE AND THEIR FULLY-DEUTERATED ANALOGS

The infrared spectra of sixteen metal complexes comprising the ligands quinoline, pyridine, aniline and their fully-deuterated v D/vH analogues have been examined in order to determine the ratio vD /vHfor bands assigned to the C-H and ring modes of the heterocyclic or D H aromatic ring. With very few exceptions, v /v falls within the ranges 0.68 to 0.85 for C-H vibrations and 0.85 to 1.00 for ring modes. The ranges are narrower for complexes of a specific amine. The potential usefulness of the results is discussed. © 1979, Taylor & Francis Group, LLC. All rights reserved.