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Figure 2 The sodium cation dimer with four acetone molecules. Each sodium cation is coordinated by five ligands. The atom Na1 unites three different azo-Fe anion-complexes through the carbonyl O atoms: O5, O5i and O6ii. [Symmetry codes: (i) −x, 1-y, 1-z; (ii) 1-x, 1-y, 1-z; (iii) −1 + x, y, z]. |