Microsolvated complexes of ibuprofen as revealed by high-resolution rotational spectroscopy

Physical Chemistry Chemical Physics : PCCP
P PinachoMelanie Schnell

Abstract

Hydrogen-bonded complexes between ibuprofen and water generated in a supersonic expansion were characterized using chirped-pulse Fourier transform microwave spectroscopy in the 2-8 GHz frequency range. Four spectra were observed allowing the determination of their rotational parameters. Comparison with quantum-chemical calculations led to their identification as the lowest energy 1 : 1 ibuprofen-water complexes. These correspond to the complexes between water and the four different conformers of ibuprofen previously detected in the gas phase, owing to their similar stabilization energies and abundances. Water seems to not change the conformational distribution of ibuprofen.

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Citations

Mar 24, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Cristina PuzzariniVincenzo Barone

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