The study of secondary effects in vibrational and hydrogen bonding properties of 2- and 3-ethynylpyridine and ethynylbenzene by IR spectroscopy (original) (raw)

This study investigates the vibrational and hydrogen bonding properties of 2- and 3-ethynylpyridine (ep) and ethynylbenzene (eb) using infrared (IR) spectroscopy and theoretical calculations. The research aims to explore the multifunctionality of ep in terms of its hydrogen bonding capabilities in solution. By comparing the acidity of ep with eb and analyzing their interactions with the hydrogen bond acceptor trimethyl phosphate (tmp) and the donor phenol (ph), the study provides insights into the role of ep as both a hydrogen bond donor and acceptor. Key findings include the characterization of hydrogen bonding energies and thermodynamic parameters, highlighting the unique properties of ep compared to eb and pyridine.