FeBr2 Wilkinson M K, Cable J W, Wollan E O, Koehler W C Physical Review 113 (1959) 497-507 Neutron diffraction investigations of the magnetic ordering in FeBr2, CoBr2, FeCl2, and CoCl2 Locality: synthetic _database_code_amcsd 0018638 3.772 3.772 6.223 90 90 120 P-3m1 atom x y z Fe 0 0 0 Br 1/3 2/3 .25