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14N NQR study of the effect of protonation on the charge distribution of some N-methylated ureas

✍ Scribed by Juan Murgich; Magaly Santana R.; José Abanero

Publisher
John Wiley and Sons
Year
1985
Tongue
English
Weight
498 KB
Volume
23
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis

The 14N NQR frequencies measured at 77 K for the amine group of the 1:l salts of nitric acid with methylurea and 1,3and 1,l-dimethylurea and the phosphoric acid salt of 1,3-dimethylurea are reported. The analysis of the NQR data showed that the N loses population from its m orbital. The decrease in rn population is partially compensated by an increase in the population of the N-C u bonds. The loss of m population is enhanced when the H atoms of the amine group are substituted by electron-donating groups Such as CH,.

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