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Figure 2
View down the c axis (a) at 200 K and (b) at 163 K, showing the shifts from the mirror planes y = 0.25 and 0.75. The unit cell at 163 K is shifted by (0.125 0.0 0.0) to correspond to the unit cell at 200 K. The N atoms are shaded. |
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Figure 2
View down the c axis (a) at 200 K and (b) at 163 K, showing the shifts from the mirror planes y = 0.25 and 0.75. The unit cell at 163 K is shifted by (0.125 0.0 0.0) to correspond to the unit cell at 200 K. The N atoms are shaded. |