title: Infrared spectrum of formamide in the solid phase.
abstract: Infrared spectra of solid formamide are reported as a function of temperature. Solid formamide samples were prepared at 30 K and then annealed to higher temperatures (300 K) with infrared transmission spectra being recorded over the entire temperature range. The NH(2) vibrations of the formamide molecule were found to be particularly very sensitive to temperature change. The IR spectra revealed a phase change occurring in solid formamide between 155 and 165 K. Spectral changes observed above and below the phase transition may be attributed to a rearrangement between formamide dimers and the formation of polymers is proposed at higher temperatures.
authors: Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560 012, India. bsivaraman@ipc.iisc.ernet.in
authors: B
authors: B
authors: Sivaraman
authors: B N
authors: BN
authors: Raja Sekhar
authors: B G
authors: BG
authors: Nair
authors: V
authors: V
authors: Hatode
authors: N J
authors: NJ
authors: Mason
mesh_terms: D019281:Dimerization; D005559:Formamides / Q000737:chemistry*; D008958:Models, Molecular; D044367:Phase Transition; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature
chemical_list: D005559:Formamides; C031066:formamide