The infra-red absorption spectrum of 18O-labelled urea

I. Laulicht, S. Pinchas, E. Petreanu, D. Samuel

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

The absorption spectra of normal and 87 atom % 18O-urea in the 400-400 cm-1 region were measured and compared for Nujol mulls, fine powders and (partly for) solutions in a dimethylsulphoxide-carbon tetrachloride mixture. The assignment of the bands which were observed to undergo an isotopic shift is discussed. An intensity inversion of the bands in the CO stretching region, which occurs on going over from the solid state to solution, both for the normal and the labelled urea, is explained on basis of a difference in the character of the higher band in each case.

Original languageEnglish
Pages (from-to)1487-1494
Number of pages8
JournalSpectrochimica Acta
Volume21
Issue number9
DOIs
StatePublished - Sep 1965
Externally publishedYes

Bibliographical note

Funding Information:
wish to express our thanks to the National Institutes of Health, U.S.A. for a grant and for the loan of the spectrometer.

Funding

wish to express our thanks to the National Institutes of Health, U.S.A. for a grant and for the loan of the spectrometer.

FundersFunder number
National Institutes of Health

    Fingerprint

    Dive into the research topics of 'The infra-red absorption spectrum of 18O-labelled urea'. Together they form a unique fingerprint.

    Cite this