La2 Mg O6 Pt Ouchetto K, Archaimbault F, Choisnet J, Et-Tabirou M Materials Chemistry and Physics 51 (1997) 117-124 New ordered and distorted perovskites: the mixed platinates Ln2 M Pt O6 (Ln = La, Pr, Nd, Sm, Eu, Gd; M = Mg, Co, Ni, Zn) _cod_database_code 1001823 _database_code_amcsd 0014210 5.5919 5.6277 7.9140 90 90. 90 P2_1/n atom x y z occ La1 .5062 .5396 .2493 Mg1 .5 0 0 .9975 Pt1 .5 0 0 .0025 Mg2 0 .5 0 .0025 Pt2 0 .5 0 .9975 O1 .197 .211 .937 O2 .286 .701 .938 O3 .398 .981 .257