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Binuclear Palladium-Tin Complexes of bdiketones as Catalysts i the Planting of Electroless Copper

IP.com Disclosure Number: IPCOM000040839D
Original Publication Date: 1987-Feb-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Fernando, Q: AUTHOR [+3]

Abstract

A group of catalysts has been developed for use in the electro less plating of copper. These catalysts, which are binuclear complexes of palladium and tin, are soluble in a variety of organic solvents, and can be readily applied to solid substrates by immersion of the substrate in a solution of the Pd-Sn complex in an organic solvent such as acetone. The catalysts are stable solids that can be easily synthesized in a single reaction step from commercially available compounds. The synthesis of some model complexes is described in the following.

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Binuclear Palladium-Tin Complexes of bdiketones as Catalysts i the Planting of Electroless Copper

A group of catalysts has been developed for use in the electro less plating of copper. These catalysts, which are binuclear complexes of palladium and tin, are soluble in a variety of organic solvents, and can be readily applied to solid substrates by immersion of the substrate in a solution of the Pd-Sn complex in an organic solvent such as acetone. The catalysts are stable solids that can be easily synthesized in a single reaction step from commercially available compounds. The synthesis of some model complexes is described in the following.

Bis-1,1,1-trifluoroacetylacetonatopalladium(II), (412 mg) and bis-1,1,1- trifluoroacetylacetonatotin(II), (425 mg) are dissolved separately in two vessels containing 20 ml of chloroform and maintained in a nitrogen atmosphere. The two solutions are mixed and the resulting dark brown solution is concentrated in a stream of N2 at room temperature. When all the chloroform has evaporated, a dark brown solid is formed.

Nuclear magnetic resonance and infrared spectra of the solid material indicate that the dark brown solid consisted of a mixture of compounds. The main component of this mixture consiste of a mixture of compounds. The main component of this mixture consisted of a pentacoordinated palladium(II) complex.

An acetone solution of the dark brown solid containing 0.1g Pd/liter of solution is applied to the surface of a clear...