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Comparing the crystal structure of α-FePO4 & β-FePO4
Firstly, the crystal structures of the alpha and beta Iron Phosphate can be identified from the paper. The lower temperature form, α-FePO4, has the space group P3121, while the higher temperature form β-FePO4, has the space group: P6422. These space groups translates to the lattice symmetry of trigonal and hexagonal respectively. The two space groups are chiral. α-FePO4 is the main form of Iron Phosphate in room temperature since the transformation to β-FePO4 only takes place at 980K mark. Therefore, it will be reasonable to deduce at normal circumstances, Iron Phosphate belongs to the trigonal crystal system.
Comparing the crystal structural change of FePO4 and quartz
As mentioned earlier, when heated up, the Iron Phosphate will transit from α-FePO4 to β-FePO4. Similarly, the room-temperature form of quartz is α-Quartz. When it is being heated up, the α-Quartz undergoes a crystal structure change to β-Quartz similar to …show more content…
However, their crystal chemistry is vastly different. The elements that makes up a quartz includes 2 Silicon atoms and 1 Oxygen atom, while the elements that makes up an Iron Phosphate includes 1 Iron atom, 1 Phosphorus atom and 4 Oxygen atoms. The quartz and FePO4 can fit into the same structure is due to the charge of their component atoms. Silicon (Si) has an atomic charge of 4 while Iron (Fe) has an atomic charge of 3 and Phosphorus (P) has an atomic charge of 5. The properties of quartz and FePO4 will be similar in the sense that the 2 atoms in each of the compound (i.e Quartz: 2 Si; Iron Phosphate: 1 Fe + 1 P) respectively will total up to an atomic charge of positive 8 which thus allows them to fit into the same crystal structure while having dissimilar chemistry
Comparing the crystal structure of α-FePO4 & β-FePO4
Firstly, the crystal structures of the alpha and beta Iron Phosphate can be identified from the paper. The lower temperature form, α-FePO4, has the space group P3121, while the higher temperature form β-FePO4, has the space group: P6422. These space groups translates to the lattice symmetry of trigonal and hexagonal respectively. The two space groups are chiral. α-FePO4 is the main form of Iron Phosphate in room temperature since the transformation to β-FePO4 only takes place at 980K mark. Therefore, it will be reasonable to deduce at normal circumstances, Iron Phosphate belongs to the trigonal crystal system.
Comparing the crystal structural change of FePO4 and quartz
As mentioned earlier, when heated up, the Iron Phosphate will transit from α-FePO4 to β-FePO4. Similarly, the room-temperature form of quartz is α-Quartz. When it is being heated up, the α-Quartz undergoes a crystal structure change to β-Quartz similar to …show more content…
However, their crystal chemistry is vastly different. The elements that makes up a quartz includes 2 Silicon atoms and 1 Oxygen atom, while the elements that makes up an Iron Phosphate includes 1 Iron atom, 1 Phosphorus atom and 4 Oxygen atoms. The quartz and FePO4 can fit into the same structure is due to the charge of their component atoms. Silicon (Si) has an atomic charge of 4 while Iron (Fe) has an atomic charge of 3 and Phosphorus (P) has an atomic charge of 5. The properties of quartz and FePO4 will be similar in the sense that the 2 atoms in each of the compound (i.e Quartz: 2 Si; Iron Phosphate: 1 Fe + 1 P) respectively will total up to an atomic charge of positive 8 which thus allows them to fit into the same crystal structure while having dissimilar chemistry