物理化学学报 >> 2007, Vol. 23 >> Issue (03): 295-298.doi: 10.1016/S1872-1508(07)60022-9

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醇和N,N-二甲基乙酰胺分子间相互作用的FTIR光谱研究

SIVAGURUNATHAN P.;RAMACHANDRAN K.;DHARMALINGAM K.   

  1. Department of Physics, Annamalai University, Annamalai Nagar-608002, Tamilnadu, India
  • 收稿日期:2006-08-08 修回日期:2006-10-08 发布日期:2007-03-07
  • 通讯作者: SIVAGURUNATHAN P. E-mail:sivatamil2001@yahoo.com

FTIR Spectroscopic Studies on Molecular Interaction between Alcohols and N,N-dimethylacetamide

SIVAGURUNATHAN P.;RAMACHANDRAN K.;DHARMALINGAM K.   

  1. Department of Physics, Annamalai University, Annamalai Nagar-608002, Tamilnadu, India
  • Received:2006-08-08 Revised:2006-10-08 Published:2007-03-07
  • Contact: SIVAGURUNATHAN P. E-mail:sivatamil2001@yahoo.com

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摘要： The association between alcohols and N,N-dimethylacetamide in carbon tetrachloride was investigated using FTIR spectroscopy at 298 K. The formation constants for 1∶1 and 1∶2 complexes were calculated using the method of Whetsel and Kagarise. The observed 1∶1 complex values were also verified using the method of Nash. The rate of change in C=O bond moment on complexing with alcohols increased with increasing acidity of alcohols. The formation constant and values of free energy change increased with the increase in carbon chain length of alcohols, which suggested that the degree of complex formation varied with the length of the carbon chain of alcohols.

关键词: FTIR spectroscopy, Hydrogen bonding, 1:1 and 1:2 complexes

Abstract: The association between alcohols and N,N-dimethylacetamide in carbon tetrachloride was investigated using FTIR spectroscopy at 298 K. The formation constants for 1∶1 and 1∶2 complexes were calculated using the method of Whetsel and Kagarise. The observed 1∶1 complex values were also verified using the method of Nash. The rate of change in C=O bond moment on complexing with alcohols increased with increasing acidity of alcohols. The formation constant and values of free energy change increased with the increase in carbon chain length of alcohols, which suggested that the degree of complex formation varied with the length of the carbon chain of alcohols.

Key words: FTIR spectroscopy, Hydrogen bonding, 1:1 and 1:2 complexes