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Figure 1 Structural unit of K2[FeII3(H2O)2(P2O7)2], showing the coordination environments of Fe, K, and P atoms. Thermal ellipsoids were drawn at the 50% probability level. Symmetry codes: (i) x, –y + , z + ; (ii) –x + 2, –y + 1, –z + 1; (iii) –x + 2,–y + 2, –z + 1; (iv) –x + 2, y + , –z + ; (v) x, –y + , z + ; (vi) –x + 2, y–1/2, –z + ; (vii) x, –y + , z–1/2; (viii) –x + 1, y + , –z + ; (ix) x + 1, y–1/2, –z + ; (x) –x + 1, –y + 1, –z + 1; (xi) x, y–1, z; (xii) x, –y + , z–1/2; (xiii) x, y + 1, z. |