Author: Salavati-Niasari Masoud
Publisher: Taylor & Francis Ltd
ISSN: 0095-8972
Source: Journal of Coordination Chemistry, Vol.62, Iss.6, 2009-01, pp. : 980-995
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Abstract
Nickel(II) complexes of 12-membered macrocyclic ligands with different donating atoms (N2O2, N2S2 and N4) in the macrocyclic ring have been encapsulated in the nanocavity of zeolite-Y by the fexible-ligand method. Nickel(II) complexes with macrocyclic ligands were entrapped in the nanocavity of zeolite-Y by a two-step process in the liquid phase: (i) adsorption of precursor ligand; 1,2-di(o-aminophenyl-, amino, oxo, thio)ethane, N2X2; in the supercages of the Ni(II)-NaY, and (ii) in situ condensation of the Ni(II) precursor complex; [Ni(N2X2)]2+; with glyoxal or biacetyl. The new host-guest nanocatalysts (HGNM), [Ni([R]2-N2X2)]2+-NaY (R = H, CH3; X = NH, O, S), have been characterized by FT-IR, DRS and UV-Vis spectroscopic techniques, XRD and elemental analysis, as well as nitrogen adsorption, and were used for oxidation of cyclohexene with molecular oxygen.
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