EP0405634A2
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Volatile organic barium, strontium and calcium compounds and method for the preparation of layered materials with barium, strontium or calcium oxides or fluorides from these compounds
Assignee: Innospec Ltd
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Filing: 1990-06-11
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Granted: —
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Expires: 2010-06-11
Abstract
Abstract Volatile organic barium, strontium and calcium compounds, which consist of the complex of a barium-, strontium- or calcium-β-diketonate and one or more coordinating ligands, characterized in that at least one coordinating ligand of the barium or strontium compound is formed by a neutral oxygen or a neutral nitrogen donor ligand, or one of the coordinating ligands of the calcium compound is formed by a neutral oxygen donor ligand, and method for the preparation of layered materials which contain one or more of the barium, strontium or calcium oxides or fluorides, by means of a deposition technique, characterized in that with the deposition technique, especially MO-CVD, one starts with the present new volatile organic barium, strontium or calcium compounds either corresponding with the respective metal oxides, or corresponding with the respective metal fluorides.
Inventors
- 👤 Klaas Timmer
- 👤 Carolus Ida Maria Antonius Spee
- 👤 Adrianus Mackor
- 👤 Harmen Anne Meinema
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 07:52
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/30; C23C16/40; C23C16/404; C07; C07F; C07F3/00; C07F3/003; C23C16/408; C30; C30B; C30B25/00; C30B25/02; C30B29/00; C30B29/10; C30B29/16; C30B29/22
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
68 words
Volatile organic barium, strontium and calcium compounds, which consist of the complex of a barium-, strontium- or calcium-β-diketonate and one or more coordinating ligands, characterized in that at least one coordinating ligand of the barium or strontium compound is formed by a neutral oxygen or a neutral nitrogen donor ligand, or one of the coordinating ligands of the calcium compound is formed by a neutral oxygen donor ligand.
Claim 2
Dependent Claim
68 words
Volatile organic barium, strontium and calcium compounds, which consist of the complex of a barium-, strontium- or calcium-β-diketonate and one or more coordinating ligands, characterized in that at least one coordinating ligand of the barium or strontium compound is formed by a neutral oxygen or a neutral nitrogen donor ligand, or one of the coordinating ligands of the calcium compound is formed by a neutral oxygen donor ligand.
Claim 3
Dependent Claim
66 words
Organic barium, strontium and calcium compounds according to claim 1, characterized in that a neutral oxygen donor ligand is a acyclic ether, a cyclic ether, a glycol ether, an alcohol, a ketone, an aldehyde, an anhydride, an amide, and a neutral nitrogen donor ligand is a nitrile, a dinitrile, an amine, a diamine, a polyamine, a pyridine, a dipyridine, a phenanthroline, an imine or a diimine.
Claim 4
Dependent Claim
45 words
Organic barium, strontium and calcium compounds according to claim 2, characterized in that the cyclic ether is (CH₂CH₂O)₆, the glycol ether is CH₃O(CH₂CH₂O)nCH₃ or HO(CH₂CH₂O)nCH₃, in which n = 1,2,3,4,5 or 6, the amide is (CH₃)₂NC(O)H, the diamine is (CH₃)₂NCH₂CH₂N(CH₃)₂ and the dipyridine is o-(2-C₅H₄N)C₅H₄N.
Claim 5
Dependent Claim
38 words
Organic barium, strontium and calcium compounds according to one of the claims 1 through 3, characterized in that the β-diketonate contains an alkyl group or a substituted alkyl group and/or an aryl group or a substituted aryl group.
Claim 6
Dependent Claim
28 words
Organic barium, strontium and calcium compounds according to claim 4, characterized in that a substituted alkyl group and/or a substituted aryl group contain one or more fluorine atoms.
Claim 7
Dependent Claim
22 words
Organic barium, strontium and calcium compounds according to claim 5, characterized in that a substituted alkyl group is either CF₃ or n-C₃F₇.
Claim 8
Dependent Claim
85 words
Method for the preparation of layered materials which contain one or more of the barium, strontium or calcium oxides or fluorides, by means of a deposition technique, characterized in that with the deposition technique one either starts with the volatile organic barium, strontium or calcium compounds according to one of the claims 1 through 6, corresponding with the respective metal oxides, or one starts with the volatile organic barium, strontium or calcium compounds according to claims 5 or 6, corresponding with the respective metal fluorides.
Claim 9
Dependent Claim
25 words
Method for the preparation of layered materials according to claim 7, characterized in that the deposition technique is the so-called metal-organic chemical vapor deposition (MO-CVD).
Claim 10
Dependent Claim
44 words
Method for the preparation of layered materials according to claim 8, characterized in that during the MO-CVD process the organic barium, strontium or calcium compounds are formed by adding coordinating ligand - in liquid or vapor phase - to the barium-, strontium- or calcium-β-diketonate.
References Cited (Backward Citations)
No citation records indexed.
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