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Modification on Synthesis of Mixed Ligand Chelates by Using Di- and Trivalent Transition Metal Ions with Schiff Base as Primary Ligand

“…The intensity of the bands and the magnetic moment value (1.56 BM) also suggest the octahedral structure [19]. In case of Cr(III) chelate, the spectrum exhibits a band at 385 nm (26,178 cm −1 ) analogous to 4 A 2 g(F) → 4 T 2 g(F) transitions in agreement with the magnetic moment value (3.02 BM) and the strength of the bands to support the existence of an octahedral [20].…”

New photocatalyst for allylic aliphatic C–H bond activation and degradation of organic pollutants: Schiff base Ti(iv) complexes

“…In the complexes with the metal (Ti(IV)) the n-p* transition slightly shis to a lower value, signifying coordination of the ligand to the metal and the bands are onset towards a longer wavelength region. 40 The change in the onset values of the complexes, which indicate that the bandgap energies of the complexes are marginally changed compared to the ligands, is shown in Fig. 4.…”

“…40 The change in the onset values of the complexes, which indicating that bandgap energies of the complexes are marginal change than ligands as shown in Figure 4. 40 The change in the onset values of the complexes, which indicating that bandgap energies of the complexes are marginal change than ligands as shown in Figure 4.…”

Synthesis, spectral, thermal and magnetic studies of Mn(II), Ni(II) and Cu(II) complexes with some benzopyran-4-one Schiff bases

“…The measured magnetic moment values for (1:1) (M:L) Cu(II) complexes with Schiff bases H 4 La and H 4 Lb are in the 1.90-2.07 B.M. range indicating the presence of one unpaired electron in these chelates, this suggested the presence of copper in the oxidation state II and square planar geometry for these chelates [23]. The solution state spectra of Ni c -H 4 La and Ni p -H 4 La complexes exhibit bands at 24155 and 24154 cm −1 , respectively.…”