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...
Table 2. Comparison of measured IR absorption bands (cm-1) to DMDNB spectra reported by Diallo [16] and Nabiev et al. [15]. HazMatID EliteDiallo (1974)Nabiev et al. (2016)Assignment 3001.5, 2980 3020, 2970 Antisymmetric stretching CH3 1532.8 1550 1565 Asymmetrical NO2 stretch 1452.6 1450...
Their calculations reveal a group of low intensity IR bands in the spectral region 3120–3150 cm−1, which they assign to the C–H fundamental vibrations of the various CL-20 polymorphs. They found that their computed spectra were very similar in frequency and intensity for the various ...