80653-51-6Relevant academic research and scientific papers
Reversible N-N Bond Homolysis in (CF3S)2N-N(SCF3)2 at Room Temperature. Electron Spin Resonance, Thermodynamic, and Kinetic Results
Schlosser, K.,Steenken, S.
, p. 1504 - 1506 (1983)
In perhaloalkane solvents at 250-315 K (CF3S)2N-N(SCF3)2 undergoes reversible homolytic cleavage reaction to yield (CF3S)2N* radicals which were identified by ESR.From the dependence of the stationary concentration of (CF3S)2N* on temperature the N-N bond dissociation energy is determined to be 32 +/- 2 kJ/mol (7.7 kcal/mol).At 298 K the equilibrium constant for N-N homolysis is (4 +/- 2) * 10-6 M.The change in entropy occuring on N-N homolysis corresponds to 3 J/K mol (0.7 eu).The activation enthalpy and entropy for N-N bond cleavage are 77 kJ/mol (18.4 kcal/mol) and 5 J/K mol (1 eu), respectively.The experimental results concerning the facile N-N homolysis are interpreted in terms of sterically and electronically induced destabilisation of the N-N bond in (CF3S)2N-N(SCF3)2.
Tetrakis(trifluoromethylthiyl)hydrazine - an Unusually Thermolabile Hydrazine Derivative
Schlosser, Karl
, p. 1544 - 1546 (2007/10/02)
2 (1) prepared by irradiation of (CF3S)3N underwent homolytic N-N-bond dissociation below room temperature to give (CF3S)2N-radicals, which were identified by ESR.The easy N-N-bond cleavage is ascribed to steric strain in 1 and electronic stabilization of 2. - Keywords: Tetrakis(trifluoromethylthiyl)hydrazine, Bis(trifluoromethylthiyl)aminyl Radical, Homolytic N-N-Bond Cleavage, ESR Spectra
