D4 Mg2 Ni Darriet B, Soubeyroux J, Pezat M, Fruchart D Journal of the Less-Common Metals 103 (1984) 153-162 Structural and hydrogen diffusion study in the Mg2 Ni H2 system _cod_database_code 1008289 _database_code_amcsd 0016211 6.5247 6.5247 6.5247 90 90 90 Fm3m atom x y z occ Ni1 0 0 0 Mg1 .25 .25 .25 D1 .143 .143 0 .08 D2 .245 0 0 .51