NOVEL PLATINUM COMPLEXES

Abstract

Platinum complex of the type [L1L2Pt[O(CO)R1]X].sub.n, wherein L1 and L2 are the same or different monoolefin ligands or together represent a compound L1L2 acting as a diolefin ligand, wherein X is selected from bromide, chloride, iodide, and —O(CO)R2, wherein —O(CO)R1 and —O(CO)R2 are the same or different C6-C18 or C8-C18 non-aromatic monocarboxylic acid groups with the exception of a phenylacetic acid group, or together represent a C8-C18 non-aromatic dicarboxylic acid group —O(CO)R1R2(CO)O—, wherein it is a mononuclear platinum complex where n=1, or wherein, in the event of the presence of L1L2 and/or of —O(CO)R1R2(CO)O—, it may be a polynuclear platinum complex with a whole number n>1.

Claims

1. A platinum complex of the type [L1L2Pt[O(CO)R1]X].sub.n, wherein L1 and L2 represent the same or different monoolefin ligands, or together represent a compound L1L2 acting as a diolefin ligand, wherein X is selected from bromide, chloride, iodide, and —O(CO)R2, wherein —O(CO)R1 and O(CO)R2 represent the same or different C6-C18- or C8-C18 non-aromatic monocarboxylic acid groups with the respective exception of a phenylacetic acid group, or together represent a C8-C18 non-aromatic dicarboxylic, acid group —O(CO)R1R2(CO)O—, wherein it is a mononuclear platinum complex with n=1, or wherein, in the event of the presence of L1L2 and/or —O(CO)R1R2(CO)O—, it may be a polynuclear platinum complex with a whole number n>1.

2. The platinum complex according to claim 1, wherein L1L2 represents a compound acting as a diolefin ligand, wherein X is selected from bromide, chloride, iodide, and —O(CO)R2, wherein —O(CO)R1 and —O(CO)R2 represent the same or different C6-C18 or C8-C18 non-aromatic monocarboxylic acid groups with the respective exception of a phenylacetic acid group, wherein they are mononuclear platinum complexes with n=1 or polynuclear platinum complexes with a whole number n>1.

3. The platinum complex according to claim 1, wherein whole number n>1 is in the range from 2 to 5.

4. The Platinum complex according to claim 1 in individualized or combined form.

5. A platinum complex of the type [(COD)Pt[O(CO)R1].sub.2].sub.n or [(NBD)Pt[O(CO)R1].sub.2].sub.n, wherein n is 1 or 2, and wherein R1 stands for a C5-C17 or C7-C17 non-aromatic hydrocarbon group with the exception of benzyl.

6. A method for producing platinum complexes according to claim 1 via ligand exchange, comprising emulsifying a two-phase system, wherein one phase comprises an at least substantially water-immiscible organic solution of a reactant of the type [L1L2PtX.sub.2].sub.n with X selected from bromide, chloride, and iodide; and wherein the other phase comprises an aqueous solution of alkali and/or magnesium salt of monocarboxylic acids correspondingly selected among R1COOH and optionally R2COOH, or a di carboxylic acid HOOCR1R2COOH.

7. Use of one or more platinum complexes according to claim 1, for producing a platinum layer on a substrate.

8. Use according to claim 7, wherein the substrate is a temperature-sensitive substrate.

9. Use according to claim 7, comprising the provision of an organic solution of the platinum complex or complexes, application of the organic solution directly to a substrate or as a component of a preparation having at least one further component, and heating of the applied coating to an object temperature above the decomposition temperature of the platinum complex or complexes.

10. Use of one or more platinum complexes obtainable via a method according to claim 6, for producing a platinum layer on a substrate.

Description

EXAMPLES

Example 1 (Production of (COD)Pt[O(CO)CH(C.SUB.2.H.SUB.5.)C.SUB.4.H.SUB.9.].SUB.2 .and Use for Production of a Platinum Layer)

[0034] A solution of 65 mmol (COD)PtCl.sub.2 in 100 ml dichloromethane was stirred, and a solution of 260 mmol sodium-2-ethylhexanoate in 500 ml water was added. The two-phase mixture was emulsified for 24 h at 20° C. by vigorous stirring. The dichloromethane phase thereby turned yellow.

[0035] The dichloromethane phase was separated, and the solvent was distilled off. The viscous, yellow residue was absorbed into petroleum benzine (40-60), and the solution was dried with magnesium sulfate and filtered. The petroleum benzine was then completely distilled off. A viscous yellow residue of (COD)Pt[O(CO)CH(C.sub.2H.sub.5)C.sub.4H.sub.9].sub.2 remained. After 10 minutes of heating to 200° C., a specular, 0.5 μm thin layer of platinum could be obtained from a 20 μm-thick layer of the (COD) Pt[O(CO)CH(C.sub.2H.sub.5)C.sub.4H.sub.9].sub.2.

Example 2 (Production of (COD)Pt[O(CO)C.SUB.6.H.SUB.11.].SUB.2.)

[0036] Analogous to Example 1, 32.5 mmol (COD)PtCl.sub.2 in 100 ml dichloromethane was reacted with 130 mmol sodium cyclohexanoate in 200 ml water.

Example 3 (Production of (COD)Pt[O(CO)C.SUB.7.H.SUB.15.].SUB.2.)

[0037] Analogous to Example 1, 32.5 mmol (COD)PtCl.sub.2 in 100 ml dichloromethane was reacted with 130 mmol sodium n-octoate in 200 ml water.

Example 4 (Production of (COD)Pt[O(CO)C.SUB.8.H.SUB.17.].SUB.2.)

[0038] Analogous to Example 1, 130 mmol (COD)PtCl.sub.2 in 200 ml dichloromethane was reacted with 520 mmol sodium isononanoate in 500 ml water.

Example 5 (Production of (COD)Pt[O(CO)(CH.SUB.2.).SUB.5 .C(CH.SUB.3.).SUB.3.].SUB.2.)

[0039] Analogous to Example 1, 65 mmol (COD)PtCl.sub.2 in 100 ml dichloromethane was reacted with 260 mmol sodium neodecanoate in 500 ml water.

Example 6 (Production of (NBD)Pt[O(CO)CH(C.SUB.2.H.SUB.5.)C.SUB.4.H.SUB.9.].SUB.2.)

[0040] Analogous to Example 1, 27.3 mmol (NBD)PtCl.sub.2 in 100 ml dichloromethane was reacted with 110 mmol sodium-2-ethylhexanoate in 100 ml water.