Chromium acetate hydroxide is the coordination complex with the formula [Cr<sub>2</sub>(OH)<sub>3</sub>(OAc)<sub>3</sub>]<sub>4</sub>. A dark violet solid, it crystallizes as the triacontatetrahydrate (34 molecules of water of crystallization). It is water soluble.
The complex is a tetramer of binuclear Cr<sub>2</sub>(OH)<sub>3</sub>(OAc)<sub>3</sub>. The subunits are linked by acetate and hydroxide ligands. The oxidation state of chromium is +3, which explains the stability of the complex since octahedral d<sup>3</sup> ions give kinetically robust complexes. Overall, the complex's structure is unusual compared to other transition metal carboxylate complexes.