No abstract

Heterometallic lanthanide-transition metal carbonyl complexes [Sm2–Co2], [Yb–Co], and [Sm2–Fe3] have been synthesized by redox reactions between bulky amidinate stabilized divalent Ln and TM carbonyl complexes.

SThe interaction of Fe(III) with niacin and pyridoxine was investigated by UV-Vis.spectrophotometry. The metal to ligand ratio for Fe(III)-niacin system was found to be approximately 1 : 3 and for Fe(III)-pyridoxine system it was 1 : 1. The redox properties of uncoordinated Fe(III)/Fe(II) system is reversible at platinum electrode and in presence of the ligands the system was found to be quasi-reversible in nature. It was also found that in every case the system was diffusion controlled.

Complex of iron(III) with saccharin, [Fe(C 7 H 4 O 3 SN) 2 Cl] has been prepared in aqueous medium. The IR and electronic spectral analysis suggest that two saccharin molecules are attached to the metal ion through N atom and there is no chemically coordinated or crystalline water in the complex molecule. The magnetic moment value indicates the paramagnetic character of the complex. The cyclic voltammetric study indicates a quasi-reversible electron transfer process due to the presence of iron in the compound.