Ice IV Engelhardt H, Kamb B Journal of Chemical Physics 75 (1981) 5887-5899 Structure of ice IV, a metastable high-pressure phase Note: T = 110 K, synthesized at 4-5.5 kb Locality: synthetic _database_code_amcsd 0018368 7.60 7.60 7.60 70.1 70.1 70.1 R-3c atom x y z occ Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) O1 .3804 -.1109 -.2396 .0103 .0073 .0094 -.0021 -.0039 -.0092 O2 .0855 .0855 .0855 .0075 .0075 .0075 -.0042 -.0042 -.0042 H1 .03 .03 .03 .5 1.9 H2 .14 .18 .01 .5 1.9 H3 .21 .33 -.10 .5 1.9 H4 .30 -.01 -.28 .5 1.9 H5 .22 .11 -.34 .5 1.9 H6 .28 .41 -.02 .5 1.9