Trisacetylacetonates of cobalt(II) and nickel(II) with the tetrabutylammonium cation at the outer sphere

The trisacetylacetonates of cobalt and nickel with the tetrabutylammonium cation in the outer sphere have been synthesized by the interaction of tetrabutylammonium hydroxide, acetylacetone, and the dihydrates of cobalt and nickel bisacetylacetonates. The nickel complex is thermally more stable than the cobalt complex. When heated in vacuum, both complexes decompose into tetrabutylammonium acetylacetonate and anhydrous acetylacetonates of cobalt(II) and nickel(II).