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Dicarbonyl(acetylacetonato)rhodium(I)

Dicarbonyl(acetylacetonato)rhodium(I) is an organorhodium compound with the formula Rh(O<sub>2</sub>C<sub>5</sub>H<sub>7</sub>)(CO)<sub>2</sub>. The compound consists of two CO ligands and an acetylacetonate. It is a dark green solid that dissolves in acetone and benzene, giving yellow solutions. The compound is used as a precursor to homogeneous catalysts.

Structure

The complex adopts square planar molecular geometry. The molecules stack with Rh---Rh distances of about 326&nbsp;pm. As such, it is representative of a linear chain compound.

Preparation

It is prepared by treating rhodium carbonyl chloride with sodium acetylacetonate in the presence of base:

[(CO)<sub>2</sub>RhCl]<sub>2</sub> + 2 NaO<sub>2</sub>C<sub>5</sub>H<sub>7</sub> → 2 Rh(O<sub>2</sub>C<sub>5</sub>H<sub>7</sub>)(CO)<sub>2</sub> + 2 NaCl

References