1-ALKYNYLDIOXABOROLANES - DETERMINATION OF (1)J(C-13,B-11) FROM C-13 NMR-STUDIES AT 102-DEGREES-C

被引:4
作者
CHEESMAN, BV
DELOUX, L
SREBNIK, M
机构
[1] Department of Chemistry, University of Toledo, Toledo, Ohio
关键词
NMR; B-11; C-13; (1)J(C-13; B-11) COUPLING CONSTANT; 1-ALKYNYLDIOXABOROLANES;
D O I
10.1002/mrc.1260330906
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Broad C-13 resonances, as the result of partially relaxed scalar C-13-B-11 coupling, were observed for the C-1 and to a lesser extent C-2 carbons of 1-alkynyldioxaborolanes at 25 degrees C. Measurement of the C-13 spectra at 102 degrees C resulted in a slower B-11 quadrupolar relaxation rate and allowed the determination of (1)J(C-13,B-11) sealer coupling from the resulting quadruplets for the C-1 carbon.
引用
收藏
页码:724 / 728
页数:5
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