Bismuth Schiferl D, Barrett CS Journal of Applied Crystallography 2 (1969) 30-36 The crystal structure of arsenic at 4.2, 78 and 299 K Sample: T = 78 K _database_code_amcsd 0012840 4.5350 4.5350 11.814 90 90 120 R-3m atom x y z Bi 0 0 .23400