MOLECULAR SEQUENCE EFFECT ON THE C-13 CARBONYL CHEMICAL-SHIFT SHIELDING TENSOR

被引:37
作者
SEPAROVIC, F
SMITH, R
YANNONI, CS
CORNELL, BA
机构
[1] CSIRO, DIV FOOD PROC, POB 52, N RYDE, NSW 2113, AUSTRALIA
[2] UNIV QUEENSLAND, DEPT BIOCHEM, ST LUCIA, QLD 4067, AUSTRALIA
[3] IBM CORP, ALMADEN RES CTR, SAN JOSE, CA 95120 USA
关键词
D O I
10.1021/ja00179a015
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The 13C chemical shift tensor of the carboxyl carbon has been determined from the 13C dipole-coupled chemical shift powder patterns for oxalic acid dihydrate and glycine and for the carbonyl carbon of glycine in the dipeptide glycylalanine and the tripeptide valylglycylalanine. The most shielded component, 33, is found to be perpendicular to the CCO plane for all four compounds, whereas 22 shows variation in magnitude and orientation. © 1990, American Chemical Society. All rights reserved.
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收藏
页码:8324 / 8328
页数:5
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