STRUCTURES AND ENERGIES OF MONOPROTONATED, DIPROTONATED, AND TRIPROTONATED UREA - NMR/AB INITIO/IGLO STUDY

被引:29
作者
RASUL, G
PRAKASH, GKS
OLAH, GA
机构
[1] UNIV SO CALIF,DONALD P & KATHERINE B LOCKER HYDROCARBON RES INS,LOS ANGELES,CA 90089
[2] UNIV SO CALIF,DEPT CHEM,LOS ANGELES,CA 90089
关键词
D O I
10.1021/jo00088a042
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The structures and NMR chemical shifts (C-13 and N-15) Of urea and its mono-, di-, and triprotonated forms were calculated using high-level ab initio and IGLO methods, respectively. The results were compared with the experimental data obtained on mono- and diprotonated urea. Triprotonated urea was not observed experimentally.
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页码:2552 / 2556
页数:5
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