H6 I3 N 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 1008704 _database_code_amcsd 0016590 8.396 8.363 8.207 65.57 60.13 70.33 P-1 atom x y z I1 .80997 .18942 .75206 I2 .24046 .73219 .77990 I3 .30239 .20097 .78134 O1 .7715 .4280 .6008 O2 .8409 .0926 .5696 O3 .1313 .5489 .8266 O4 .4703 .6598 .6133 O5 .4708 .2262 .8410 O6 .0523 .1853 .6683 O7 .3950 -.0189 .7517 O8 .2672 .6442 .0069 O9 .1242 .1406 .0341 N1 .7296 .7263 .7604 H1 .795 .783 .809 H2 .769 .731 .648 H3 .62 .81 .80 H4 .699 .618 .842