The interaction by hydrogen bond formation of some primary alcohols （ l-heptanol, l-octanol and l-decanol） with esters （methyl methacrylate, ethyl methacrylate and butyl methacrylate） was investigated in non-polar...The interaction by hydrogen bond formation of some primary alcohols （ l-heptanol, l-octanol and l-decanol） with esters （methyl methacrylate, ethyl methacrylate and butyl methacrylate） was investigated in non-polar solvents viz., n-heptane, CC14 and benzene by means of FTIR spectroscopy. Formation constants and free energy changes of complex formation were determined. The dependence of the equilibrium constants and free energy changes of complex formation on the alkyl chain length of both the alcohols and esters are discussed. The solvent interaction between the solute and solvent. effect on the hydrogen bond formation is discussed in terms of specific展开更多
The hydrogen bonding interactions between N-methylformamide and primary,secondary,and tertiary alcohols have been studied using the FTIR spectroscopic method.The most likely association complex between alcohol and N-m...The hydrogen bonding interactions between N-methylformamide and primary,secondary,and tertiary alcohols have been studied using the FTIR spectroscopic method.The most likely association complex between alcohol and N-methylformamide is the 1∶1 stoichiometric complex formed between the hydroxyl group of alcohol and the carbonyl group of N-methylformamide.The formation constant of the 1∶1 complexes has been calculated using the Nash method.It appears that the primary alcohols have larger formation constant compared with the secondary and tertiary alcohols.The results showed that the proton-donating ability of the alcohols decreased in the order:primary>secondary>tertiary,and that the association constant increased with the increase in carbon chain of the alkyl group of alcohols.展开更多
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...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.展开更多
文摘The interaction by hydrogen bond formation of some primary alcohols （ l-heptanol, l-octanol and l-decanol） with esters （methyl methacrylate, ethyl methacrylate and butyl methacrylate） was investigated in non-polar solvents viz., n-heptane, CC14 and benzene by means of FTIR spectroscopy. Formation constants and free energy changes of complex formation were determined. The dependence of the equilibrium constants and free energy changes of complex formation on the alkyl chain length of both the alcohols and esters are discussed. The solvent interaction between the solute and solvent. effect on the hydrogen bond formation is discussed in terms of specific
文摘The hydrogen bonding interactions between N-methylformamide and primary,secondary,and tertiary alcohols have been studied using the FTIR spectroscopic method.The most likely association complex between alcohol and N-methylformamide is the 1∶1 stoichiometric complex formed between the hydroxyl group of alcohol and the carbonyl group of N-methylformamide.The formation constant of the 1∶1 complexes has been calculated using the Nash method.It appears that the primary alcohols have larger formation constant compared with the secondary and tertiary alcohols.The results showed that the proton-donating ability of the alcohols decreased in the order:primary>secondary>tertiary,and that the association constant increased with the increase in carbon chain of the alkyl group of alcohols.
文摘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.
