Temperature and H/D Isotopic Effects in the IR Spectra of the Hydrogen Bond in Solid-State 2-Furanacetic Acid and 2-Furanacrylic Acid
Figure 6
Polarized IR spectra of 2-furanacetic acid and 2-furanacrylic acid crystals measured at room temperature in the band frequency range for the IR radiation of the normal incidence with respect to the “ac” crystal faces. (a) 2-furanacetic acid crystal. (I) The electric field vector of the incident beam of IR radiation parallel to the -axis (II) The E vector parallel to the *-axis (the *-symbol denotes the vector in the reciprocal lattice). (b) 2-furanacrylic acid crystal. (I) The electric field vector E parallel to the -axis. (II) The E vector parallel to the *-axis.
