LOW-TEMPERATURE C-13 MAGNETIC-RESONANCE .8. CHEMICAL SHIELDING ANISOTROPY OF OLEFINIC CARBONS

被引：35

作者：

ORENDT, AM ^{[1
]}

FACELLI, JC ^{[1
]}

BEELER, AJ ^{[1
]}

REUTER, K ^{[1
]}

HORTON, WJ ^{[1
]}

CUTTS, P ^{[1
]}

GRANT, DM ^{[1
]}

MICHL, J ^{[1
]}

机构：

[1] UNIV UTAH,DEPT CHEM,SALT LAKE CITY,UT 84112

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 1988年 / 110卷 / 11期

关键词：

ETHYLENE - Spectroscopic Analysis - OLEFINS - Structure - PARAFFINS - Spectroscopic Analysis;

D O I：

10.1021/ja00219a007

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The principal values of the **1**3C NMR shielding tensor were measured at cryogenic temperatures for a series of olefinic carbons, including methyl-substituted ethylenes, 1-methyl- and 1,2-dimethylcycloalkenes, methylenecycloalkanes, and bicyclo left bracket n. m. 0 right bracket alkenes. Information on the orientation of the principal axes was obtained from ab initio calculations of the chemical shielding tensors using the IGLO (individual gauge for localized orbitals) method. The results for several compounds with unusual principal values of the shielding tensor were analyzed in terms of the bond contributions in the principal axis system.

引用

页码：3386 / 3392

页数：7

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