New precursors for barium MOCVD. [beta]-Ketoiminate complexes containing appended polyether lariats'
- Northwestern Univ., Evanston, IL (United States)
Minimizing molecular oligomerization, and hence lattice cohesive energies, by saturating the metal coordination sphere with sterically encumbered nonpolar or fluorinated ligands is an attractive strategy for the design of volatile MOCVD (metal-organic chemical vapor deposition) precursors. For the growth of barium-containing ferroelectric or high-[Tc] superconducting films, the small charge-to-radius ratio of Ba[sup 2+] presents a significant challenge in precursor ligand design. This communication describes the synthesis of fluorine-free [beta]-ketoiminate ligands with appended polyether lariats' to encapsulate Ba[sup +2] and render it volatile for MOCVD (metal-organic chemical vapor deposition). The characterization and crystal structures of two such Ba[sup 2+] complexes are described as is the application to the growth of crystalline BaPbO[sub 3] (a metal-like perovskite) films by MOCVD. 19 refs., 2 figs.
- OSTI ID:
- 6707986
- Journal Information:
- Inorganic Chemistry; (United States), Journal Name: Inorganic Chemistry; (United States) Vol. 32:3; ISSN 0020-1669; ISSN INOCAJ
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALCOHOLS
ALKALINE EARTH METAL COMPLEXES
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPLEXES
BARIUM COMPOUNDS
BARIUM OXIDES
BOND ANGLE
BOND LENGTHS
CHALCOGENIDES
CHEMICAL COATING
CHEMICAL PREPARATION
CHEMICAL VAPOR DEPOSITION
COHERENT SCATTERING
COMPLEXES
CRYSTAL STRUCTURE
DEPOSITION
DIFFRACTION
DIMENSIONS
FILMS
GLYCOLS
HYDROXY COMPOUNDS
LEAD COMPOUNDS
LEAD OXIDES
LENGTH
LIGANDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXIDES
OXYGEN COMPOUNDS
POLYETHYLENE GLYCOLS
POLYMERS
SCATTERING
SURFACE COATING
SYNTHESIS
VOLATILITY
X-RAY DIFFRACTION