Acylation of Dibenzo-18-crown-6 with Alkali-metal Acetates in Polyphosphoric Acid
作者:N. Zh. Saifullina、A. K. Tashmukhamedova
DOI:10.1007/s10593-005-0263-8
日期:2005.8
A Systematic Investigation of the Effects of Axial Ligands and Peripheral Substituents on the Electronic Structures of Zinc(II) Tetraphenylporphyrin π-Cation Radicals: Electrochemical EPR and Spectroscopic Observation
A detailed study of the effect of axial ligand and peripheral substituent on the π-system of zinc(II) tetraphenylporphyrin π-cation radical has been made using an electrochemical EPR technique. It is confirmed from the EPR spectra that most of the anions and bases examined coordinate the radicals axially. The spin density on the nitrogen nuclei in the radicals increases with the polarizability of the