Synthesis and characterization of a new (E,E)-dioxime and its mono and polynuclear complexes containing a 14-membered dithiadiaza macrocyclic moiety
Titel:
Synthesis and characterization of a new (E,E)-dioxime and its mono and polynuclear complexes containing a 14-membered dithiadiaza macrocyclic moiety
Auteur:
Bilgin, Ahmet Ertem, Beytullah Gok, Yasar Dilber, Gulsev Kilicarslan, Meltem
Verschenen in:
Journal of coordination chemistry
Paginering:
Jaargang 57 (2004) nr. 10 pagina's 883-891
Jaar:
2004-07-10
Inhoud:
A novel (E,E)-dioxime,5,6:13,14-di(4'-t-butylbenzo)-2,3-bis(hydroxyimino)-8,11-dithia-1,4-diazacyclotetradecane (H2L), containing a 14-membered dithiadiaza macrocyclic unit has been synthesized by the reaction of 1,2-bis(4-t-butyl-2-aminobenzylthio)ethane (1) and cyanogendi-N-oxide (2). A mononuclear nickel(II) complex (3) with a metal : ligand ratio of 1 : 2 was also prepared. A heterotrinuclear complex [Cu2Ni(HL)2](PF6)2 (4) was synthesized by using the mononuclear complex 3 and [Cu(CH3CN)4]PF6. A heteropentanuclear complex [Cu2(UO2)2(phen)2Ni(HL)2](PF6)2(NO3)2 (5) containing the oximato tetraanion as a bridging ligand and 1,10-phenanthroline as an end-capping ligand was obtained by using the heterotrinuclear ligand for the Cu2 [image omitted] center. The ligand and its complexes have been characterized by 1H and 13C NMR, IR and mass spectroscopy, elemental analysis and semiempirical quantum chemical calculations.