trisacetylacetonate

Tris(acetylacetonate) is a chemical compound with the formula M(acac)3, where M represents a metal ion and acac denotes the acetylacetonate anion. The acetylacetonate ligand is a bidentate chelating ligand derived from acetylacetone, a beta-diketone. In tris(acetylacetonate) complexes, the metal ion is coordinated to three acetylacetonate ligands, forming an octahedral geometry around the central metal.

These compounds are often crystalline solids and can exhibit a range of colors depending on the specific metal. They are generally soluble in organic solvents but insoluble in water. Tris(acetylacetonate) complexes are widely used as precursors in various chemical applications. They serve as catalysts in organic synthesis, for instance, in polymerization reactions and cross-coupling reactions. They are also employed as precursors for the deposition of metal oxide thin films via techniques such as chemical vapor deposition (CVD) and atomic layer deposition (ALD).

The stability and volatility of these complexes make them suitable for gas-phase applications. Different metal ions can form tris(acetylacetonate) complexes, including transition metals like iron, cobalt, nickel, manganese, and chromium, as well as some main group metals. The synthesis typically involves the reaction of a metal salt with acetylacetone in the presence of a base.