CHARGE-TRANSFER INTERACTION OF CROWN THIOETHERS WITH PI-ELECTRON ACCEPTORS

被引：5

作者：

HAMED, MMA

ELNADY, AM

BAKR, M

MAHMOUD, MR

机构：

[1] Chemistry Department, Faculty of Science, Assiut University, Assiut

来源：

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS | 1993年 / 83卷 / 1-4期

关键词：

CHARGE-TRANSFER COMPLEXES; CROWN THIOETHERS; SPECTRAL CHARACTERISTICS; STABILITY; SOLVENT EFFECT; SOLID CT COMPLEXES;

D O I：

10.1080/10426509308034361

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

1:1 CT complexes formed between some crown polythioethers and pi-electron accepters (DDQ, TCNE and CHL) have been synthesized and characterized. Spectral characteristics and formation constants of the CT complexes have been measured at 25 degrees C. The effects of donor molecular structure, pi-acceptor electron affinity and solvent polarity on the stabilities of these CT complexes have been investigated and discussed. It is deduced that such complexes are of weak n-pi type where the ground state wave function is described primarily by the nonbonding structure (D-A). Ionization potentials of the crown thioethers have been estimated from the CT transition energies.

引用

页码：183 / 189

页数：7

共 20 条

[1] MOLECULAR COMPLEXES OF SUBSTITUTED THIOPHENS WITH SIGMA AND PI ACCEPTORS - CHARGE-TRANSFER SPECTRA AND IONIZATION POTENTIALS OF DONORS [J].