Hydrogen bond mediated rotor-ring coupling in acetic acid-benzoic acid mixed dimer.
In this work we demonstrate that a doubly hydrogen-bonded interface of two carboxylic acid groups behaves as efficient conduit to transmit the rotor effects for IVR acceleration in a phenyl ring. The phenomenon has been demonstrated by measuring the resolved emission spectra following SVL excitations in S(1) of a 1:1 mixed dimer between acetic acid and benzoic acid. The role of the methyl rotor has been ascertained by comparing the results with those obtained for an analogous dimeric system between formic acid and benzoic acid.
Nandi
Chayan K
CK
Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur UP 208016, India.
Hazra
Montu K
MK
Chakraborty
Tapas
T