n, n '- ethylene bis - salicilideniminatul, containing lanthanum and titan, like substance for getting initial polycrystalline lanthanum ceramics has titanatului structure pyrochlorului lantanium,titanium, n, n '- bis - ethylen salicilideniminat containing base substance for preparation of lantanium titanate polycrystallic ceramics with pyrochlorine structure

摘要

The invention relates to the new coordinative combination of heterometalic N,N'-ethylen-bis-salicilideniminates, particularly, ter-(µ-o)-bi(N,N'-ethylen-bis-salicilidenimin)lantanium(III)-terchlortitanium (IV).The technical result of the invention consists in the synthesis of the new-heterometalic coordinative compound, containing lantanium and titanium in the ratio of one to one as well as N,N'-ethylen-bis-salicilidenimin as chelate and bridged ligand. This compount may be used as a basis product for preparation of polycrystalline ceramics La2Ti2O7 of pyrochlore structure. Titanate lantanium formation in this case passes in an alone stage for the shorter time (3 hours) and at a lower temperature (850oC).