Platinum and palladium complexes
AssigneeAir Products and Chemicals, Inc.
InventorsFrancis Gordon Albert Stone, Michael Green, John Lionel Spencer
Life of this patent
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Abstract
A method of preparing bis(cis,cis-cyclo-octa-1,5 diene) platinum and palladium by reducing [Pt Cl.sub.2 (1,5-C.sub.8 H.sub.12)] or [Pd Cl.sub.2 (1,5-C.sub.8 H.sub.12)] in the presence of a solvent not having an active hydrogen atom, methods of preparing various other platinum and palladium compounds, some of which are novel from bis(cis,cis-cyclo-octa-1,5 diene) platinum and palladium, and methods of depositing films of platinum or palladium metal on a substrate by coating the substrate with various platinum or palladium compounds which are then decomposed.
Claims10
A method of preparing bis(cis,cis-cyclo-octa-1,5 diene) platinum or palladium in which a reducing agent is reacted in solution with [PtCl.sub.2 (1,5-C.sub.8 H.sub.12)] or [PdCl.sub.2 (1,5-C.sub.8 H.sub.12)] and excess cis, cis,cyclo-octa-1,5-diene in the presence of a solvent not having an active hydrogen atom.
Novel platinum and palladium complexes of the general formula:
- (R.sub.3.sup.2 E).sub.x (Q).sub.y M.sub.m (R.sup.1 NC).sub.z
- wherein Q is a radical containing at least one olefinic double bond or acetylenic triple bond;
- E is P, As, Sb or N;
- R.sup.2 is aryl, alkyl or alkoxyl;
- M is Pt or Pd;
- R.sup.1 is an alkyl or aryl group;
- x is 0 or 1;
- y is 0, 2 or 3;
- m is 1 or 3;
- z is 0 or 6;
- and when m is 3, then M is Pt, z is 6 and both x and y are 0;
- and when m is 1 and z is 0, then x + y = 3.
A method of preparing R.sub.3 P--Pt--PR.sub.3 comprising reacting in solution bis (cis, Cis-Cyclo-octa-1,5 diene) platinum with the trisubstituted phosphine R.sub.3 P wherein R is a bulky ligand such that not more than two of the phosphines can form a bond with the Pt atom.
A method of preparing ##STR5## comprising reducing in solution R.sub.3 P--Pt--PR.sub.3 with hydrogen wherein R is a bulky ligand such that not more than two of the phosphines R.sub.3 P can form a bond with the Pt atom.
A method of preparing M(Q).sub.3 by reacting in solution bis(cis,cis-cyclo-octa-1,5 diene) M with the unsaturated compound Q in an inert solvent wherein M is Pt or Pd and Q is a radical containing at least one olefinic double bond or at least one acetylenic triple bond.
A method of preparing Pt.sub.3 (R.sup.1 NC).sub.6 by reacting in solution bis(cis, cis-cyclo-octa-1,5-diene) platinum with excess isonitrile R.sup.1 NC in an inert solvent wherein R.sup.1 is an alkyl or aryl group.
A method of preparing R.sub.3 E M (Q).sub.2 by reacting in solution M(Q).sub.3 with ER.sub.3 in an inert solvent wherein M is Pt or Pd and Q is a radical containing at least one olefinic double bond or at least one acetylenic triple bond, E is P, As, Sb or N and R is aryl, alkyl, or alkoxyl.
A method of preparing Pt(Q).sub.3 or Pd(Q).sub.3 comprising reacting in solution [PtCl.sub.2 (1,5-C.sub.8 H.sub.12)] or [PdCl.sub.2 (1,5-C.sub.8 H.sub.12)] respectively with a reducing agent and the compound Q wherein Q is a radical containing at least one olefinic double bond or acetylenic triple bond.
Dependencies are inferred from the claim text.