New dioxidouranium (VI) and mixed-valence oxidovanadium (IV/V) coordination compounds with N, O-pentadentate ligands obtained from pyridoxal and triethylenetetramine

作者：Back Davi Fernando^*; de Oliveira Gelson Manzoni; Fontana Liniquer Andre; Neves Ademir; Iglesias Bernardo Almeida; Camargo Tiago Pacheco; Campos Patrick Teixeira; Vargas Jaqueline Pinto

来源：Inorganica Chimica Acta, 2015, 428: 163-169.

DOI：10.1016/j.ica.2015.01.013

• Pyridoxal
• Schiff bases
• Uranyl complexes
• Dinuclear vanadyl complexes

This work describes the synthesis and structural analysis of the uranium and vanadium complexes [(UO2)(C22H30N6O4)]center dot MeOH (1) and [(VO)(2)(O)(C30H36N7O6)]center dot 3MeOH (2) with ligands obtained from the condensation of pyridoxal and triethylenetetramine. The probable mechanism for the formation of imidazoline rings in these complexes is described in some details. Finally, electrochemical and UV-Vis studies of the dinuclear vanadium complex were also carried out in order to determine the variation in the oxidation states of the metallic centers (VO2+/VO3+) in DMSO solution.

• 出版日期2015-3-24