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Figure 1 Unit cell with the three types of calcium layers in the crystal structure of (I). Colour code: Pink plane – Ca1 layer, green plane – Ca2 layer, red plane – Ca3 layer; green octahedra – CrO6 polyhedra, purple tetrahedra – PO4). |
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Figure 1 Unit cell with the three types of calcium layers in the crystal structure of (I). Colour code: Pink plane – Ca1 layer, green plane – Ca2 layer, red plane – Ca3 layer; green octahedra – CrO6 polyhedra, purple tetrahedra – PO4). |