optical and NMR parameters values is not sufficient to explain the dioxygenase activity rate. In their study of protocatechuate 3,4-dioxygenase, Orville et al. (Biochemistry 1997, 36, 10052-10066) suggested that asymmetric chelation of the catecholate to Fe(III) is of great importance in the efficiency of the intradiol dioxygenasereaction. Indeed, a comparison of the X-ray structures of [(TPA)FeIII(DBC)]+
Towards robust alkane oxidation catalysts: electronic variations in non-heme iron(ii) complexes and their effect in catalytic alkane oxidation
作者:Jason England、Reema Gondhia、Laura Bigorra-Lopez、Allan R. Petersen、Andrew J. P. White、George J. P. Britovsek
DOI:10.1039/b901390c
日期:——
linear and tripodal tetradentate ligands has been prepared. Electron withdrawing and electrondonatingsubstituents in the para position of the pyridine ligands as well as the effect of pyrazine versus pyridine and sulfur or oxygen donors instead of nitrogen donors have been investigated. The electronic effects induced by these substituents influence the strength of the ligand field. UV-vis spectroscopy