Vibrational modes of hydrazine sulfate and deuterium-substituted single crystals
摘要:
A single crystal study of hydrazine sulfate and deuterium-substituted hydrazine sulfate utilizing both polarized Raman and FT-IR reflectance spectroscopy is reported. External optic modes of the sulfate ion have been distinguished from those of the hydrazinium ion for the first time. Reflectance spectroscopy allowed the identification of the nu(3) modes of the sulfate ion in a spectral region containing the N-H bending and deformation modes of the hydrazinium ion. The spectroscopic data indicate a very slight degree of interionic coupling between the sulfate and hydrazinium ions. Transverse optic modes derived from the reflectance spectra correspond quite well to the frequencies observed in the Raman spectra.
Formation of the radical cation N<sub>2</sub>H<sub>6</sub>˙<sup>+</sup>in irradiated hydrazinium sulphate (N<sub>2</sub>H<sub>6</sub><sup>2+</sup>SO<sub>4</sub><sup>2–</sup>): an electron spin resonance study
作者:Nader Ganghi、Jane L. Wyatt、Martyn C. R. Symons
DOI:10.1039/c39860001424
日期:——
Exposure of [N2H62+SO42–] at 77 K to 60Co γ-rays gave SO4˙– radicals and a novel species with two equivalent nitrogen nuclei and six equivalent protons, thought to be N2H6˙+ formed by electron capture; these species readily gave NH3˙+ radicals on annealing.
Vibrational frequencies of partially deuterated hydrazinium (2+) sulfate
作者:Andrew Mattioda、Roger Frech
DOI:10.1016/s1386-1425(97)00073-5
日期:1997.10
The normal mode frequencies of the isotopically-substituted hydrazinium (2+) species N2DXH6-X (X = 1, 2...6) have been calculated using ab initio methods. The normal mode frequency shifts exhibit a wide range of dependence on the level of isotopic substitution and the nature of the normal mode. These data have been used to analyze the hydrazinium ion normal mode frequency patterns experimentally observed in a Raman and infrared spectroscopic study of hydrazinium sulfate, N2H6SO4, at different levels of deuterium substitution. These data indicate that there are no preferred sites for deuterium substitution in the cation. (C) 1997 Elsevier Science B.V.