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 language | English |
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Pages (from-to) | 1487-1494 |
Number of pages | 8 |
Journal | Spectrochimica Acta |
Volume | 21 |
Issue number | 9 |
DOIs | |
State | Published - Sep 1965 |
Externally published | Yes |
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.
Funders | Funder number |
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National Institutes of Health |