Four oxovanadium and one dioxovanadium complex with 2-hydroxyacetophenone N(4)-phenylthiosemicarbazone (H(2)L) which are represented as [VOLphen].2H(2)O (1), [VOLbipy] (2), [VOLdmbipy] (3), [VOL](2) (4) and [VO(2)HL].CH(3)OH (5) have been synthesized and characterized by elemental analyses, electronic, infrared and EPR spectral techniques. In all the complexes 1-4 the ligand coordinates through...

The synthesis and characterization of tri- and tetrametaphosphate titanium(IV) oxo and peroxo complexes is described. Addition of 0.5 equiv of [OTi(acac)2]2 to dihydrogen tetrametaphosphate ([P4O12H2]2-) and monohydrogen trimetaphosphate ([P3O9H]2-) provided a bis(μ2,κ2,κ2) tetrametaphosphate titanyl dimer, [OTiP4O12]24- (1; 70% yield), and a trimetaphosphate titanyl acetylacetonate complex, [O...

rounding the oxovanadium(IV) species, VO 2~ , in particular the 70 or so papers published since my more comprehensive review. 1 Complexes of V02+ and their examination by X-ray diffraction, infrared spectroscopy, thermodynamic (stability) studies, electron spin resonance studies, and electronic spectral studies, and attempts at theoretical models, are critically reviewed and updated. [The SCP8 ...

Oxovanadium(IV), manganese(II) and copper(II) complexes of a Schiff base ligand derived from 2,4-dihydroxyacetophenone and 1,2-diaminocyclohexane have been encapsulated in the nanocavity of zeolite-Y by flexible ligand method and characterized by metal analysis, IR spectroscopic studies and X-ray diffraction patterns. The encapsulated complexes abbreviated here as CuL-Y, MnL-Y and VOL-Y catalyz...

Acetylacetonates of a number of transition metals (e.g., chromium, iron, cobalt, nickel, copper and zinc) have been widely investigated [1, 2] for their various physical and structural properties. Considerable attention seems to have been directed to the addition complexes of copper bis-acetylacetonate with a number of nitrogen donor ligands [3-5] but the addition complexes of Cu(acac)2 with ox...

This paper demonstrates the influence of temperature, exciton concentration, and electron transportation layers on the excimer emission of a novel deep-blue material: 4,4'-bis(4''-triphenylsilyl) phenyl-1,1'-binaphthalene (SiBN), by studying the photoluminescence and electroluminescence spectra of SiBN-based film. We have further developed sunlight-like and warm-light white organic light-emitti...