首页   按字顺浏览 期刊浏览 卷期浏览 1H NMR additive shielding coefficients (Z) for organoseleno groups in vinyl selenides
1H NMR additive shielding coefficients (Z) for organoseleno groups in vinyl selenides

 

作者: Helena M. C. Ferraz,   Jaão V. Comasseto,   Carlos A. Brandt,  

 

期刊: Magnetic Resonance in Chemistry  （WILEY Available online 1987）
卷期: Volume 25, issue 1  

页码: 42-45

 

ISSN:0749-1581

 

年代: 1987

 

DOI:10.1002/mrc.1260250111

 

出版商: John Wiley&Sons, Ltd.

 

关键词: Vinylic selenides;Proton NMR

 

数据来源: WILEY

 

摘要:

AbstractAdditive shielding parameters for the phenylseleno group (ZPhSe‐gem= 1.36;ZPhSe‐cis= 0.31;ZPhSe‐trans= 0.29) have been estimated. Examples of the calculation of chemical shifts for olefinic protons in vinylic selenides by means of these increments are given. A comparison with 2‐pyridylseleno and methylseleno substituents has been made. The standard deviations of theZvalues are 0.06 forZPhSe‐gem, 0.10 forZPhSe‐cisand 0.05 for

 

点击下载:  PDF (246KB)



返 回