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Journal of Atomic, Molecular, and Optical Physics
Polarized IR spectra of2-furanacetic acidand of2-furanacrylic acidcrystals were measured at 293 K and 77 K in thevO−HandvO−Hband frequency ranges. The corresponding spectra of the two individual systems strongly differ, one from the other, by the corresponding band shapes as well as by the temperature effect characterizing the bands. The crystal spectral properties remain in a close relation with the electronic structure of the two different molecular systems. We show that a vibronic couplingdoi:10.1155/2012/125471 fatcat:elgag3pnfbhrrmwiz3zavic5w4