picosecond IR pump-probe measurementsvibrational relaxationPicosecond infrared pump–probe measurements of the vibrational relaxation of the nitro (NO 2 ) functional group asymmetric stretch (1580 cm 1 ) of several molecules used in energetic materials, TNAZ, RDX, HMX, and CL-20 (abbreviations ...
In Efc-Mb(II) and ferrous Physeter catodon Mb (Pc-Mb(II)), where the Nδ proton is H-bonded to a neutral backbone carbonyl group, the ν(Fe-His) stretch was found at 220 cm−1 [47,50]. Therefore, in ferrous Nbs the lower ν(Fe-His) wavenumber indicates a weaker interaction...