LOW-TEMPERATURE SYNTHESIS OF PEROVSKITE SOLIDS LaMO3 (M = Ni, Co, Mn) VIA BINUCLEAR COMPLEXES OF COMPARTMENTAL LIGAND N, N'-BIS (3-CARBOXYSALICYLIDENE) ETHYLENEDIAMINE

A new method was developed for the low-temperature synthesis of perovskite solids using binuclear complexes. The thermal decomposition of such complexes was studied using a thermobalance. The solids that formed after heat treatment from 400 to 1000 C were characterised by XRD. Using this method perovskites LaNiO3, LaCoO3 and LaMnO3 were synthesised at about 500-600 C. This procedure yields solids with specific surface areas substantially higher than those obtained from ordinary ceramic methods, such as the citrate and nitrate routes. 18 refs.