X-ray diffraction studies, thermal, electrical and optical properties of oxovanadium(IV) complexes with quadridentate schiff bases

Dielectrical properties and conduction mechanism of quinoline Schiff base and its complexes

“…Some Schiff base complexes exhibit interesting physical and chemical properties [3][4][5][6], and potentially useful biological activities [7][8][9], used in analytical fields [10] and reported as effective corrosion inhibitors for some metals in acidic media [11] and important precursors for semiconducting materials [12,13]. The effect of variation of the metal ion and the substituted function group of Schiff base complexes on dc and ac conductivity have been studied by many authors [12][13][14][15]. Mohanan et al [12] studied the dc electrical conductivity of some lanthanide(III) complexes with a heterocyclic Schiff base ligand.…”

“…They found that different metal ions affected the r ac values, and reported that the values of r ac were 0.25 9 10 -6 , 1.38 9 10 -6 and 1.28 9 10 -6 S cm -1 for Co(II), Ni(II) and Cu(II) complexes, respectively. The thermal, dc electrical and optical properties of oxovanadium(IV) complexes with quadridentate Schiff bases H 2 L 1 , H 2 L 2 and H 2 L 3 were studied [15]. The authors reported that the VO(L 2 ) complex showed good thermal stability compared to the other two complexes, and the electrical activation energies of the complexes were in the range of 0.48-1.18 eV.…”

“…The optical band gaps E g of [VO(L 1 )], [VO(L 2 )] and [VO(L 3 )] complexes were 3.45, 2.65 and 2.80 eV, respectively. Coordination of vanadyl(II) complexes has attracted many researchers to strive for a better understanding of vanadyl complexes as a model of diabetic drugs [9,[15][16][17]. Schiff base ligands have been used for the selective extraction of uranium [18].…”

Preparation, Characterization and Biological Activity Studies for Some Mixed Ligands Complexes of 1, 10- Phenanthroline and Schiff Base Ligand with Metal Ions

“…Schiff's bases are applied as privileged ligands because of good solubility of the complexes in common solvents and high stability of their chelation compositions [12]. The geometrical construction appears often in the π-system of a Schiff's base and thermo chemically characterizes of Schiff's as well, impacts the electronic composition have attracted much investigator notice in view of their capability to chalet metal ions, appearing as bidentate ligands in metal coordinates including (N,N,O,O) donor atom positions [13,14].…”

Research on synthesis and conductivity of ferrocenyl Schiff base and its salt

“…8 Interest has been focused on Schiff base functional group because of its thermal stability, electrical conduction and photoconduction. 9 Schiff base can form coordinate complexes with metal ions by its nonbonded pair of electrons on nitrogen atoms, and charge-transfer complexes with an electron acceptor or electron donor by its nonbonded electrons or π electrons. It is expected that the physical properties, such as electrical, of …”