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a The coordination spheres of the hydrated Cr3+(1) and Cr3+(2) ions. The 2mFo-DFc map is contoured at the 1.0σ level. b The distorted square pyramidal coordination sphere of the Cr3+(3) cation. The 2mFo-DFc map is contoured at the 1.0σ level. Water molecules are represented by red spheres. The coordination and hydrogen bonds are represented by gray and red dashed lines, respectively
