New VIVO-complexes for oxidative desulfurization of refractory sulfur compounds in fuel: synthesis, structure, reactivity trend and mechanistic studies

Abstract

A series of oxidovanadium(iv) complexes based on 2-(2′-hydroxyphenyl)imidazole (HPIMH), with substituent groups of different electronegativities on the phenolic para position (HPIMX; X = –H, –Br, –OMe and –NO₂), were synthesized and characterized.