... Volume. Page. ... Molecules 2007, 12(12), 2621-2642; doi:10.3390/12122621. ... The IR spectrum of III-3 (molecular formula C 22 H 14 F 3 N 3 O, mw 393.37, structure and carbon numbering in Figure 1) over the 3060-3032 cm -1 range showed multiple weak absorption peaks ...