C. P. Gupta
Abstract: New complex of the type [Pr (SH) (OH) 2 (H2O) ] has been synthesized in solid state in presence of sun light by the interaction of Na2S 7H2O with Pr6O11 at ambient temperature. Characterization of the parent compound [Pr (SH) (OH) 2 (H2O) ], has been done by elemental analysis, TGA, DTA and X ray powder diffraction pattern. Doping occurs in parent compound with Cr+3 ion forming dark green nano crystalline compound [Pr1-x Crx (SH) (OH) 2 (H2O) ]. The doped complex of Pr+3 ion is paramagnetic. The doped complex of Pr+3 ion is also hexagonal structure with lattice constant, a = 4.141A0 and c = 7.601A0. The UV visible spectrum of Cr+3 ion shows peak at 380 and 450 nm. New peaks at 490 and 600 nm occur due to f d and f f transition for Cr+3 and Pr+3 ions respectively in compound, [Pr1-x Crx (SH) (OH) 2 (H2O) ]. Nanoparticles of [Pr1-x Crx (SH) (OH) 2 (H2O) ] were prepared in ethylene glycol indicating the particle size 50-100nm in TEM photograph.
Keywords: Nano crystalline compound Pr1-x Crx SH OH 2 H2O, paramagnetic, hexagonal structure, UV visible spectrum, SEM