Structural modifications during thermal pretreatment of La(NO{sub 3}){sub 3}, La{sub 2}(CO{sub 3}){sub 3}, and La{sub 2}O{sub 3} is reported. Diffuse reflectance, FTIR, X-ray diffraction, and BET surface area measurements were used in the characterizations. Studies were performed in the presence and absence of O{sub 2}, resulting in different products for the thermal modifications.

Influence of Pretreatment on Lanthanum Nitrate, Carbonate, and Oxide Powders

Variety in the coordination modes of β-dicarbonyl compounds in metal complexes

Near-infrared-emitting rare-earth chelates based on 8-hydroxyquinoline have appeared frequently in recent literature, because they are promising candidates for active components in near-infrared-luminescent optical devices, such as optical amplifiers, organic light-emitting diodes, .... Unfortunately, the absence of a full structural investigation of these rare-earth quinolinates is hampering the further development of rare-earth quinolinate based materials, because the luminescence output cannot be related to the structural properties. After an elaborate structural elucidation of the rare-earth quinolinate chemistry we can conclude that basically three types of structures can be formed, depending on the reaction conditions: tris complexes, corresponding to a 1:3 metal-to-ligand ratio, tetrakis complexes, corresponding to a 1:4 metal-to-ligand ratio, and trimeric complexes, with a 3:8 metal-to-ligand ratio. The intensity of the emitted near-infrared luminescence of the erbium(III) complexes is highest for the tetrakis complexes of the dihalogenated 8-hydroxyquinolinates.

Rare-earth quinolinates: infrared-emitting molecular materials with a rich structural chemistry.

NIR-emissive erbium–quinolinolate complexes

Actinide nitrate complexes

The thermolysis of the rare earth and other metal nitrates

The thermal deaquation of some aquopentamminecobalt(iii) complexes1

The thermolysis of the 8-quinolinol chelates of yttrium and the rare earth elements

The thermal decomposition of the 5,7-dihalo-8-quinolinol rare earth metal chelates

The chemistry of the solvated metal chelates. iii. the bis-(acetylacetonato)-uranium(vi) solvates1

Wesley W. Wendlandt

Papers

The thermolysis of the rare earth and other metal nitrates

The thermal deaquation of some aquopentamminecobalt(iii) complexes1

The thermolysis of the 8-quinolinol chelates of yttrium and the rare earth elements

The thermal decomposition of the 5,7-dihalo-8-quinolinol rare earth metal chelates

The chemistry of the solvated metal chelates. iii. the bis-(acetylacetonato)-uranium(vi) solvates1