The synthesis and characterization of a new tetraoxime and its dinuclear complexes

摘要

A novel bis(dioxime)(H_4L) containing the hexaoxamacrocyclic has been synthesized from the reaction oftetraaminodibenzo-18-crown-6 (1) and 2,3-butanedionemonooxime (2). An octahedral cobalt(III) complex of this ligandwas prepared by the oxidation of the cobalt(II) complex. TheBF_2bridged cobalt(III) complex was achieved by using thehydrogen bridged cobalt(III) complex and boron trifluoride. Thestructures of the bis (dioxime) and its complexes are proposedaccording to elemental analysis, ~1H and ~13C NMR , IR and MS data.