G. Maier et J. Endres, Isomerization of matrix-isolated formamide: IR-spectroscopic detection of formimidic acid, EUR J ORG C, (6), 2000, pp. 1061-1063
Ultraviolet irradiation of matrix-isolated formamide (1) in solid argon wit
h light of wavelength 248 nm leads to the formation of formimidic acid (2).
Comparison of the experimental IR spectrum of the photoproduct with the ca
lculated IR spectrum of 2 shows clearly that two rotamers 2a and 2b are for
med.