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Hydrogen Bonding Effects on Electron Population and13C Chemical Shift of Base: Alcohol Pyridine Complexes

 

作者: G. Goethals,   M.C. Moreau-descoings,   C. Sarazin,   J.P. Seguin,   J.P. Doucet,  

 

期刊: Spectroscopy Letters  （Taylor Available online 1989）
卷期: Volume 22, issue 8  

页码: 973-991

 

ISSN:0038-7010

 

年代: 1989

 

DOI:10.1080/00387018908053952

 

出版商: Taylor & Francis Group

 

关键词: 13C NMR;Hydrogen bond;CNDO/2 calculations;pyridine

 

数据来源: Taylor

 

摘要:

The carbon chemical shifts of pyridine associated to various aliphatic and aromatic alcohols are measured. Actual effects of hydrogen bonding formation on 13c shifts, have been characterized by evaluating in first, anisotropy and non specific medium effects. Linear relationships are obtained between 13C shifts and the IR frequency shifts. Positive slopes are observed for C-β and C-γ in agreement with the electron population change, but a reverse slope results for C-α carbon.

 

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