Heterobimetallic d—f Metal Complexes as Potential Single-Source Precursors for MOCVD: Structure and Thermodynamic Study of the Sublimation of [Ni(salen)Ln(hfa)3], Ln = Y, Gd
✍ Scribed by Alain Gleizes; Miguel Julve; Natalia Kuzmina; Andrei Alikhanyan; Francesc Lloret; Irina Malkerova; José Luis Sanz; François Senocq
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 282 KB
- Volume
- 1998
- Category
- Article
- ISSN
- 1434-1948
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✦ Synopsis
Heterobimetallic [Ni(salen)Ln(hfa) 3 ] species [H 2 salen and derivative, by means of thermal analyses, and mass spectrometry using a Knudsen cell. The dissociation process Hhfa being N,NЈ-ethylenebis(salicylideneimine) and hexafluoroacetylacetone respectively], where Ni(salen) acts as a [Ni(salen)Y(hfa) 3 ] = Ni(salen) + Y(hfa) 3 has been thermodynamically investigated. Information on the solid-neutral chelating ligand towards Ln III , form a series of isostructural compounds for Ln = Y III and any lanthanide III state intermolecular interactions in relation with volatility was obtained through the crystal structure determination of cation from La to Yb. They are also isostructural with some of the [Cu(salen)Ln(hfa) 3 ] compounds. They sublime without the gadolinium derivative. A comparative structural study of [Ni(salen)Gd(hfa) 3 ] and [Cu(saloph)Y(hfa) 3 ], [H 2 saloph is decomposition under vacuum which makes them potential single-source precursors in MOCVD. Sublimation, thermal N,NЈ-o-phenylenebis(salicylideneimine)], allows to understand why the latter is less volatile than the former despite behaviour, pressure and composition of the vapour phase versus temperature have been studied for the yttrium similar molecular and solid-state structures.