H2 I3 K O9 Bordet P, Boucherle J, Santoro A, Marezio M Solid State Ionics 21 (1986) 243-254 Crystal structure and proton conductivity of N H4 H2 (I O3)3 and K H2 (I O3)3 _cod_database_code 1008359 _database_code_amcsd 0016270 8.266 8.200 8.180 66.08 60.16 71.06 P-1 atom x y z I1 .81368 .18645 .75488 I2 .23951 .73478 .77795 I3 .30383 .20049 .78194 O1 .7755 .4272 .6010 O2 .8348 .0820 .5807 O3 .1213 .5541 .8212 O4 .4719 .6591 .6118 O5 .4647 .2309 .8519 O6 .0604 .1835 .6602 O7 .4040 -.0211 .7514 O8 .2635 .6402 .0069 O9 .1175 .1358 .0325 K1 .7233 .7202 .7623