 | Acta Crystallographica Section E Acta Crystallographica Section E CRYSTALLOGRAPHIC COMMUNICATIONS |
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![[Figure 2]](br2202fig2mag.jpg)
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| Figure 2 Polyhedral presentation of the crystal structure of K2[FeII3(H2O)2(P2O7)2], (a) zigzag edge-sharing iron octahedral chain is built from FeO6 and FeO5(H2O) octahedra by sharing their trans- or skew-edges running along [010]; (b) P2O7 groups act as a bidentate ligand to link FeO6-based chains along [001] to form a corrugated iron diphosphate layer [Fe3(P2O7)2(H2O)2]2–; (c) the iron diphosphate layers stack along [100] in AAA fashion with the potassium atoms locating at the interlayer space; (d) the K atom is 8-coordinated to seven oxygen atoms and a H2O molecule coming from adjacent iron diphosphate layers to form an irregular polyhedron. Purple octahedron: FeO6, orange tetrahedron: PO4, light grey sphere: K atom, dark grey sphere: H atom. |
![[Figure 2]](br2202fig2.jpg)
| CRYSTALLOGRAPHIC COMMUNICATIONS |
ISSN: 2056-9890
