Carbon
Ownby P D, Yang X, Liu J
Journal of the American Ceramic Society 75 (1992) 1876-1883
Calculated X-ray diffraction data for diamond polytypes
Note: hexagonal, 4H structure
Note: theoretically calculated structure values
_database_code_amcsd 0014067
2.5221 2.5221 8.2371 90 90 120 P6_3/mmc
atom   x   y      z
C1     0   0 .09375
C2   1/3 2/3 .15625