Core-ionization energies and the anomalous basicity of arsabenzene and phosphabenzene

Autor:	K. D. Bomben, T. D. Thomas, W. T. Chan, A. J. Ashe, M. K. Bahl, James K. Gimzewski, P. G. Sitton
Rok vydání:	1979
Předmět:	Proton Protonation General Chemistry Resonance (chemistry) Photochemistry Biochemistry Catalysis Trimethylarsine chemistry.chemical_compound Delocalized electron Colloid and Surface Chemistry chemistry Ionization Ionization energy Methyl group
Zdroj:	Journal of the American Chemical Society. 101:1764-1767
ISSN:	1520-5126 0002-7863
DOI:	10.1021/ja00501a020
Popis:	To help understand the anomalously low basicity of arsabenzene and phosphabenzene we have investigated the cor- relation between the core-ionization energies and proton affinities for arsabenzene, phosphabenzene, arsine, trimethylarsine, phosphine, and the methylphosphines. The results support the view that the low basicity is due to the inability of the aromatic compounds to undergo geometric rearrangement on protonation. Comparison of the Auger kinetic energies with core-ioniza- tion energies gives an estimate of 0.45 eV for the stabilization energy due to the resonance delocalization of the charge on phos- phine following core ionization. Further comparison of these quantities indicates that a methyl group and an aromatic ring are both electron donating compared to hydrogen.
Databáze:	OpenAIRE
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