NaRb2Al3F12 Le Bail A, Gao Y, Fourquet J, Jacoboni C Materials Research Bulletin 25 (1990) 831-839 Structure determination of A2NaAl3F12 (A=K,Na) _cod_database_code 1000146 _database_code_amcsd 0014346 12.046 6.984 7.093 90 125.04 90 P2_1/m atom x y z U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Rb1 .8827 .25 .8768 .0257 .0253 .0227 0 0 .0159 Rb2 .3618 .75 .8805 .0193 .0261 .0138 0 0 .0066 Na .2450 .25 .0264 Al1 .5 .5 .5 Al2 0 0 .5 Al3 .2716 .25 .5605 F1 .5108 .25 .4333 F2 .3608 .25 .8577 F3 .0564 .75 .5623 F4 .8209 .75 .7320 F5 .6393 .0319 .7849 F6 .3849 .0648 .5831 F7 .9308 .9633 .2097 F8 .8371 .5612 .4499