INFRARED-SPECTRA OF THE INTRA-MOLECULAR HYDROGEN-BONDED DIFLUOROHALOFORM ANIONS IN SOLID ARGON

The compounds CHF3, CHF2C1, CHF2Br, and CHF2I were subjected to argon resonance photoionization during condensation with excess argon at 15 K. In the fluoroform experiments, new absorptions at 3599,1279, 1174, and 603 cm-1 are assigned to the electron-capture product F-H-(CF2)-, which is supported by C-13 and D isotopic data. In the CHF2C1 and CHF2Br studies both F-H-(CFX) and X-H-(CF2)- species were characterized by infrared spectra including the C-13 and D substituted molecules. The CHF2l compound produced the analogous F-H-(CFI) type III hydrogen-bonded species, but the iodide elimination product appears to be the type I species I--HCF2. © 1979 American Chemical Society.