THE DETERMINATION OF THERMODYNAMICS OF OXYGEN COMPLEXES OF ANIONS OF SULFUR-DIOXIDE AND FLUORONITROBENZENES USING ATMOSPHERIC-PRESSURE IONIZATION MASS-SPECTROMETRY

Authors
SHUIE LR DSA ED WENTWORTH WE CHEN ECM
Citation
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
Citations number
15
Categorie Soggetti
Chemistry
Journal title
Structural chemistry → ACNP
ISSN journal
10400400
Volume
4
Issue
4
Year of publication
1993
Pages
213 - 218
Database
ISI
SICI code
1040-0400(1993)4:4<213:TDOTOO>2.0.ZU;2-3
Abstract
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.