SYNTHESIS OF Pb2Fe2O5 BY THERMAL DECOMPOSITION OF Pb2[Fe(CN)6].4H2O

Abstract

In the present work the synthesis, thermal analysis and structural characterization of Pb 2 [Fe(CN) 6 ].4H 2 O are described in order to obtain mixed oxides with technological properties. The starting materials and the decomposition products were characterized by IR spectroscopy, powder X-ray diffraction (XRDP) and scanning electron microscopy (SEM). The crystal structure of Pb 2 [Fe(CN) 6 ].4H 2 O has been refined by Rietveld analysis using X-ray powder diffraction data. It Crystallizes in the monoclinic system with space group P2 1 /m and the cell unit parameters are a = 10.9755 (2)

Mixed-Ligand Approach to Design of Heterometallic Single-Source Precursors with Discrete Molecular Structure

“…Heating of the heterometallic complex Pb 2 [Fe(CN) 6 ]•4H 2 O at 700 °C in air resulted in a mixture of Pb 2 Fe 2 O 5 , PbO, and Fe 2 O 3 oxide phases. 15 More recent work 16 describes the use of a lead nitroprusside complex Pb[Fe(CN) 5 NO] to produce pure Pb 2 Fe 2 O 5 upon heating at 750 °C in air. Metal β-diketonate complexes represent an important class of heterometallic precursors due to their unique properties, such as high volatility with a sufficient vapor pressure and mass transport at reasonable temperatures (∼100 °C), stable composition of the vapor phase during the evaporation process, solubility in a variety of common solvents, clean low-temperature decomposition, and the absence of stable intermediate (residues) formation upon pyrolysis.…”

“…The application of heterometallic single-source precursors to obtain Pb 2 Fe 2 O 5 material upon thermal decomposition is currently limited by two reported examples. Heating of the heterometallic complex Pb 2 ­[Fe(CN) 6 ]·​4H 2 O at 700 °C in air resulted in a mixture of Pb 2 ­Fe 2 O 5 , PbO, and Fe 2 O 3 oxide phases . More recent work describes the use of a lead nitroprusside complex Pb­[Fe(CN) 5 ­NO] to produce pure Pb 2 ­Fe 2 O 5 upon heating at 750 °C in air.…”

Synthesis, DFT calculations of structure, vibrational and thermal decomposition studies of the metal complex Pb[Mn(C3H2O4)2(H2O)2]

“…Using this method of synthesis, the diffusion distances between metal centres are remarkably reduced and, as a consequence, the reaction times and temperatures are reduced compared with other methods of synthesis. The obtained product presents more purity, being highly homogeneous and the grain size is considerably smaller [12][13][14][15][16][17][18]. Although different ligands can be used in the synthesis of these compounds [12][13][14][15][16][17][18] The solid state properties of the obtained material were studied with laboratory PXRD, FTIR and Raman spectroscopy and thermogravimetric and differential thermal analysis.…”

Synthesis, Physicochemical Analyses, and Antibacterial Activity of the Fe(iii) Salt of 4-Amine-N-2-Thiazolyl-Benzene Sulfonamide

“…In the last years, we have synthezised and studied the structural and physicochemical properties of metallic complexes which have interesting applications, such as their use as precursors to obtain oxides by thermal decomposition [13][14][15][16] . In this work, we report the preparation, physicochemical analysis and antibacterial activity of iron(III) sulfathiazole.…”