The enthalpy of formation of the HSO radical
β Scribed by N. Balucani; P. Casavecchia; D. Stranges; G.G. Volpi
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 359 KB
- Volume
- 211
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
β¦ Synopsis
The enthalpy of formation, AH&,, of the HSO radical has been determined to be -0.9 + 0.7 kcal/mol from the analysis of highresolution crossed beam reactive scattering experiments on the reaction 0( 'P) +H,S+HSO+H at different collision energies. The results are compared with previous experimental and theoretical estimates.
π SIMILAR VOLUMES
## Receiwd 30 June 19X3 Thermochemical properties of the HSO radical in the ideal gas state from 0 to 3000 K uere calculated in the harmonic-oscillator, rigid-rotor approGrnation using recent spectroscopic data for the vibrational frequencies and heat of formation, and theoretica! estimates of the
The energetics of the benzoyl radical have been studied by photoacoustic calorimetry. The value obtained for D[PhC (0)-H]. 371? 11 kJ mol-' (89 + 3 kcal mol-' ), agrees with an early result derived from iodination kinetic experiments and does not support a recent suggestion that the radical is reson
spectra and the fluorescence hfetlme of HSO (x 2A'-%2A") rddlcals XC measured m the g.~s phase III the wawlcngth range 570-700 nm The progresslon of the SO strctchmg mode (u3) IS observed m cmlsslon and cxc~tat~on spectra The zero-pressure hfetune cxtrapolatcd from the Stern-Volmer plots IS 11 3:: "
The standard molar enthalpy of formation of B = CH3C(CH3)2OOC(CH3)2CH3(l): DfHΒ°m(B,l) = -(380.8 2 2.0) kJβ’mol -1 , and its standard molar enthalpy of vaporization: DvapHΒ°m(B) = (39.3 2 1.0) kJβ’mol -1 have been determined at the temperature 298.15 K using combustion calorimetry, ebulliometry, and hea