Ice Ih Bernal J, Fowler R Journal of Chemical Physics 1 (1933) 515-548 A Theory of Water and Ionic Solution, with Particular Reference to Hydrogen and Hydroxyl Ions _cod_database_code 1011023 _database_code_amcsd 0017930 7.82 7.82 7.36 90 90 120 P6_3cm atom x y z O1 1/3 0 .0625 O2 2/3 0 .9375 H1 1/3 0 .174 H2 .438 0 .026 H3 .772 .105 .975