Ice II McFarlan R Journal of Chemical Physics 4 (1936) 60-64 The Structure of Ice II _cod_database_code 1011063 _database_code_amcsd 0017962 7.8 4.5 5.56 90 90 90 C222_1 atom x y z O1 .167 .205 .178 H1 .167 0 0 H2 0 .25 .25 H3 .25 .455 .25