C-13 SPIN-LATTICE RELAXATION IN BENZOPHENONE AND ITS ISOTOPOMERS

被引：4
|
作者：
VUJANIC, P
MEIC, Z
机构：
[1] Ruder Bošković Institute, 1016 Zagreb
来源：
JOURNAL OF MOLECULAR STRUCTURE | 1993年 / 293卷
关键词：
D O I：
10.1016/0022-2860(93)80040-3
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In order to analyze deuterium effects on C-13 spin-lattice relaxation time (T1) in benzophenone (BPN), five BPN isotopomers were prepared and their C-13 NMR spectra recorded. In BPN all the phenyl carbon atoms, except the quarternary one, are predominantly relaxed by the dipole-dipole mechanism due to C-H dipole-dipole relaxation. Other contributions to the total spin-lattice relaxation times of individual carbon atoms are discussed as well. Deuteration affects also the magnitude of spin-lattice relaxation times. An increase in T1 by cca. 550% at the ortho (C2) and para (C4) carbon atoms in perdeuterated BPN has been observed.
引用
收藏
页码：163 / 166
页数：4
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