Ca Mn7 O12 Bochu B, Buevoz J, Chenavas J, Collomb A, Joubert J, Marezio M Solid State Communications 36 (1980) 133-138 Bond lengths in (Ca Mn3) (Mn4) O12. A new Jahn-Teller distortion of Mn^3+^ octahedra _cod_database_code 1008267 _database_code_amcsd 0016189 10.4414 10.4414 6.3433 90 90 120 R-3 atom x y z Ca1 0 0 0 Mn1 .5 0 0 Mn2 .5 0 .5 Mn3 0 0 .5 O1 .2226 .2731 .0814 O2 .34219 .5221 .3410