THE DETERMINATION OF THERMODYNAMICS OF OXYGEN COMPLEXES OF ANIONS OF SULFUR-DIOXIDE AND FLUORONITROBENZENES USING ATMOSPHERIC-PRESSURE IONIZATION MASS-SPECTROMETRY
Lr. Shuie et al., THE DETERMINATION OF THERMODYNAMICS OF OXYGEN COMPLEXES OF ANIONS OF SULFUR-DIOXIDE AND FLUORONITROBENZENES USING ATMOSPHERIC-PRESSURE IONIZATION MASS-SPECTROMETRY, Structural chemistry, 4(4), 1993, pp. 213-218
The thermodynamic properties of oxygen complexes of the negative ions
of 1-fluoro-2,4-dinitrobenzene (FDNB), 1,5-difluoro-2,4-dinitrobenzene
(DFDNB), and sulfur dioxide have been determined by measuring the tem
perature dependence of the pertinent ion ratios by using a mass spectr
ometer equipped with a Ni-63 atmospheric pressure ionization source. T
he values of -DELTAH-degrees and -DELTAS-degrees are SO2-(O2), 101 +/-
2.1 kJ mole1 and 121 +/- 3.8 J/K-mole; FDNB-(O2), 51.5 +/- 3.4 kJ mol
e-1 +/- 9.2 J/K-mole; and DFDNB-(O2), 65.7 +/- 0.4 kJ mole-2 and 110 /- 5.0 J/K-mole.