Molecular interaction studies of substituted benzyl alcohols with butyl methacrylate in carbon tetrachloride using FTIR spectroscopic method

Molecular interaction between substituted benzyl alcohols (o-aminobenzyl alcohol, o-methylbenzyl alcohol, benzyl alcohol, o-fluorobenzyl alcohol, o-chlorobenzyl alcohol, o-bromobenzyl alcohol, o-iodobenzyl alcohol and o-nitrobenzyl alcohol) with butyl methacrylate in carbon tetrachloride has been studied at 298 K using FTIR spectroscopic method. The formation constant of 1:1 complexes has been calculated using Nash method. The values of the formation constant and the free energy change values vary with the substituent of benzyl alcohol, which suggests that the strength of the intermolecular hydrogen bond (O-H center dot center dot center dot O=C) is dependent on substituted benzyl alcohols. The results show that, the proton donating ability of substituted benzyl alcohols is in the order: o-aminobenzyl alcohol