A_hR3_166_ac & a,c/a,x2 --params=3.62036,7.25049442597,0.22222 & R(-3)m D^5_{3d} #166 (ac) & hR3 & C19 & Sm (alpha) & & A. H. Daane, R. E. Rundle, H. G. Smith and F. H. Spedding, Acta Cryst. 7, 532-535 (1954) 1.0000000000000000 1.81017865060100 -1.04510713120600 8.74980115986700 0.00000000000000 2.09021426241200 8.74980115986700 -1.81017865060100 -1.04510713120600 8.74980115986700 Sm 3 Direct 0.00000000000000 0.00000000000000 0.00000000000000 Sm (1a) 0.22222222222222 0.22222222222222 0.22222222222222 Sm (2c) 0.77777777777778 0.77777777777778 0.77777777777778 Sm (2c)