Table 1 List of 23 reflections indexed with the BP-structured nitrogen structure at 140 GPa.

dobs and dcal represent the d-spacing of observed and calculated reflections, respectively. Dcal was obtained using unit cell parameters a = 2.1438 Å, b = 6.5554 Å, and c = 2.8534 Å.

#h k ldobs (Å)dcal (Å)dobs-dcal (Å)
10 2 03.27793.27770.0002
20 2 12.15312.15210.0010
31 1 11.66061.65820.0024
40 4 01.63831.6389−0.0006
50 0 21.42691.42670.0002
60 4 11.42121.42110.0001
71 3 11.34751.3486−0.0011
81 1 21.16781.1687−0.0009
92 0 01.07331.07190.0014
101 5 11.04211.04140.0007
112 2 01.01971.01880.0009
122 2 10.95970.95950.0002
130 2 30.91460.91350.0011
141 1 30.86160.8619−0.0003
152 4 10.85470.8558−0.0011
160 4 30.82300.82260.0004
170 8 10.78740.7876−0.0002
182 6 00.76460.7652−0.0006
191 7 20.73470.7354−0.0007
201 5 30.72450.7246−0.0001
210 6 30.71780.71740.0004
222 2 30.69440.6953−0.0009
232 8 00.65170.65100.0007