Solvay Deutschland Gmbh

Solvay Barium Strontium Gmbh

Guenther Doellein

Claus-Peter Klages

Guenter Weidenbach

Udo Bringmann

Joerg Mueller

Hans Meyer

Andreas Hamerich

Andreas Weber

Lars Lottermoser

Alkaline earth metal heptane dionates which have uniform evaporation properties in a vacuum and are therefore highly suitable for use in CVD synthesis for depositing layers containing alkaline earth metal useful in fields such as the production of high temperature superconductors.

Alkaline earth metal-heptane dionate compounds

MOCVD process using alkaline earth metal-heptane dionate compounds

A method for producing Ph.sub.3 C[B(C.sub.6 F.sub.5).sub.4 ] in an improved yield by reacting LiB(C.sub.6 F.sub.5).sub.4, which has not been isolated between production and use, with Ph.sub.3 CCl preferably in a molar ratio of LiB(C.sub.6 F.sub.5).sub.4 to Ph.sub.3 CCl of 1:(1.+-.0.05), and preferably in the presence of a hydrocarbon solvent such as an aliphatic hydrocarbon containing from 5 to 8 carbon atoms, to give a Ph.sub.3 C[B(C.sub.6 F.sub.5).sub.4 ] product; optionally evaporating the hydrocarbon solvent; extracting the resulting Ph.sub.3 C[B(C.sub.6 F.sub.5).sub.4 ] product; separating insoluble LiCl, and isolating the product. The product may be isolated, for example, by freeing it of solvent, thereafter dissolving the product in toluene to form a toluene solution, introducing the toluene solution into a hydrocarbon solvent to form crystals of the product, and recovering the crystals. In the method, the LiB(C.sub.6 F.sub.5).sub.4 is used in the form of a hydrocarbon preparation, preferably a reaction mixture obtained in the synthesis of LiB(C.sub.6 F.sub.5).sub. 4, the concentration of may be adjusted by concentrating or diluting as needed to obtain a preferred LiB(C.sub.6 F.sub.5).sub.4 concentration of from 20 to 300 grams/liter.

Method of producing Ph.sub.3 C[B(C.sub.6 F.sub.5).sub.4 ]

A process for depositing metal-containing layers which have a high specific electrical conductivity, involving the decomposition of organometallic compounds in a hydrogen-containing gas or vapor phase by means of a plasma. The energy density of the plasma is optimized, which involves recording an OES spectrum. It is thus possible to produce, e.g., strongly adhering conductor tracks whose width is less than 50 .mu.m and whose ratio of height to width is greater than 1. Also disclosed are a method for optimizing the deposition of metal-containing layers having a high specific conductivity, and a composite body produced by the process of the invention comprising a polymer substrate and a metal layer deposited thereon.

Process for depositing layers having high specific electrical

A process for depositing a layer containing boron and nitrogen on a substrate by decomposing one or more N-substituted borazoles in the presence of the substrate, in particular by a plasma CVD process.

Process for depositing a layer containing boron and nitrogen

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Hanover, Germany

Guenther Doellein