W.c. Heraeus Gmbh

Heraeus Deutschland Gmbh & Co Kg

Heraeus Precious Metals Gmbh & Co. Kg

Heraeus Materials Technology Gmbh & Co. Kg

Stephen Jeffery

Kevin King

Steffen Voss

Jan Schapp

Dongshui Zeng

A method for preparing organometallic complexes of the general formula (I):M(RPD)&#x2003;&#x2003;(I)in which M may be iron, ruthenium, or osmium, R is hydrogen or an alkyl group having about 1 to 4 carbon atoms, and PD is a cyclic or open chain dienyl system that is known to form a sandwich type complex is provided. The complexes having formula (I) have a metal purity of at least about 99.99%. The method involves reacting a M(III) trichloride hydrate with an HRPD compound and at least one reducing metal, such as aluminum, in an alcohol solvent.

Process for the preparation of bis(pentadienyl)-complexes of iron group metals

Preparation of halogenide-free Platinum(II)acetylacetonate [Pt(acac)] Platinum(II) hexafluoroacetylacetonate [Pt(hfac)], Platinum(II) trifluoroacetylacetonate [Pt(tfac)] or Platinum(II)-alkylsubstituted acetylacetonates by the reaction of a halogen free platinum (IV) oxo- or hydroxo-compound, such as PtO.nHO (n being an integer from 1 to 4) or HPt(OH)or NaPt(OH)or KPt(OH), with a reducing agent in aqueous solution in the presence of a stoichiometric or higher amount of acetylacetone (acac), potassium acetylacetoante (Kacac) sodium acetylacetonate (Naacac), hexafluoroacetylacetone (hfac), trifluoroacetylacetone (tfac) or alkyl substituted acetylacetones or their salts and an Hdonor.

Process for the preparation of platinum acetylacetonato complexes

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Stephen Jeffery