RT Journal Article
T1 Homo- and heteronuclear compounds with a symmetrical bis-hydrazone ligand : synthesis, structural studies, and luminescent properties
A1 Rodríguez Hermida, Sabina
A1 Lago Blanco, Ana Belén
A1 Carballo Rial, Rosa
A1 Fabelo Rosa, Óscar Ramón
A1 Vázquez López, Ezequiel Manuel
K1 2303.07 Compuestos de Coordinación
AB Nine new coordination compounds have been synthesized by the reaction of salts of bivalent metal ions (a=ZnII, b=CuII, c=NiII, d=CoII) with the bis(benzoylhydrazone) derivative of 4,6-diacetylresorcinol (H4L). Three kinds of complexes have been obtained: homodinuclear compounds [M2(H2L)2]⋅nH2O (1 a, 1 b, 1 c, and 1 d), homotetranuclear compounds [M4(L)2]⋅n(solv) (2 a and 2 c), and heterotetranuclear compounds [Zn2M2(L)2]⋅n(solv) (2 ab, 2 ac, and 2 ad). The structures of the free ligand H4L⋅2 DMSO and its complexes [Zn2(H2L)2(DMSO)2] (1 a*), [Zn4(L)2(DMSO)6] (2 a*), and [Zn0.45Cu3.55(L)2(DMSO)6]⋅2 DMSO (2 ab*) were elucidated by single-crystal X-ray diffraction. The ligand shows luminescence properties and its fluorimetric behavior towards MII metals (M=Zn, Cu, Ni and Co) has been studied. Furthermore, the solid-state luminescence properties of the ligand and compounds have been determined at room temperature. 1H NMR spectroscopic monitoring of the reaction of H4L with ZnII showed the deprotonation sequence of the OH/NH groups upon metal coordination. Heteronuclear reactions have also been monitored by using ESI-MS and spectrofluorimetric techniques.
PB Chemistry - A European Journal
SN 09476539
YR 2015
FD 2015-03-11
LK http://hdl.handle.net/11093/198
UL http://hdl.handle.net/11093/198
LA eng
NO Chemistry - A European Journal, 21(17): 6605-6616 (2015)
NO Ministry of Education and Science | Ref. CTQ2010–19386/BQU
DS Investigo
RD 04-oct-2023