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Electron affinities of naphthalene, anthracene and substituted naphthalenes and anthracenes
Author(s) -
Heinis Thomas,
Chowdhury Swapan,
Kebarle Paul
Publication year - 1993
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210280416
Subject(s) - anthracene , naphthalene , chemistry , enthalpy , electron transfer , electron , gas phase , photochemistry , analytical chemistry (journal) , medicinal chemistry , thermodynamics , organic chemistry , nuclear physics , physics
The determination of electron transfer equilibria A − + B = A + B − in the gas phase, with a pulsed‐electron high‐pressure mass spectrometer, leads to Δ G 1 °, Δ H 1 °, and Δ S 1 ° values. These can be converted into the free energy, enthalpy and entropy changes, Δ G a °(B), Δ H a °(B) and Δ S a °(B), for the reaction e + B = B − , since the corresponding values for the reference compounds A are known. Results were obtained for 18 substituted naphthalenes, anthracene and substituted anthracenes. The results are compared with some theoretical predictions and the corresponding reduction potentials in solution. Rate constants for 13 exoergic electron‐transfer reactions were also measured. These were found to be close to the ADO collision rates.