Title of article
1H NMR relaxation in urea
Author/Authors
Taylor، نويسنده , , R.E. and Bacher، نويسنده , , Alfred D. and Dybowski، نويسنده , , C.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
6
From page
147
To page
152
Abstract
Proton NMR spin–lattice relaxation times T1 were measured for urea as a function of temperature. An activation energy of 46.3 ± 4.7 kJ/mol was extracted and compared with the range of 38–65 kJ/mol previously reported in the literature as measured by different magnetic resonance techniques. In addition, proton NMR spin–lattice relaxation times in the rotating frame T1ρ were measured as a function of temperature. These measurements provide acquisition conditions for the 13C and 15N CP/MAS spectra of pure urea in the crystalline phase.
Keywords
t1 , T1? , Activation energy , urea , 1H NMR , NMR , 13C CP/MAS , 15N CP/MAS , Spin–lattice relaxation
Journal title
Journal of Molecular Structure
Serial Year
2007
Journal title
Journal of Molecular Structure
Record number
1964313
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