Percleveite-(Ce) Deng B, Ibers J A Acta Crystallographica E61 (2005) i76-i78 Dicerium disilicate, Ce2[Si2O7] _database_code_amcsd 0010444 6.7964 6.7964 24.7282 90 90 90 P4_1 atom x y z Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Ce1 .11721 .23463 .125617 .00974 .0097 .0101 .0094 .00114 -.00046 .00082 Ce2 .16750 .51956 .367822 .00966 .0095 .0096 .0099 -.00032 .00005 .00008 Ce3 .33539 .08110 .265631 .00948 .0098 .0096 .0090 .00112 -.00015 .00028 Ce4 .69879 .23761 .015776 .01020 .0092 .0110 .0104 -.00110 -.00047 .00198 Si1 .2332 .1505 .00002 .0085 .0096 .0071 .0090 -.0003 .0000 -.0008 Si2 .2943 .0053 .39499 .0089 .0097 .0100 .0070 .0003 .0009 .0006 Si3 .3784 .2598 .49333 .0086 .0092 .0083 .0082 -.0006 .0004 -.0015 Si4 .5945 .3035 .15184 .0081 .0064 .0085 .0094 -.0004 -.0005 -.0021 O1 .0404 .1533 .2183 .0118 .019 .005 .011 -.001 -.002 .001 O2 .0397 .4561 .5985 .0127 .009 .011 .018 -.003 .002 -.002 O3 .0553 .2839 .0247 .0092 .011 .007 .010 .003 -.001 -.003 O4 .1212 .5662 .1910 .0104 .011 .007 .013 -.003 -.002 .002 O5 .1330 .1502 .3675 .0113 .007 .015 .012 .000 -.003 .000 O6 .1865 .2084 .6723 .0109 .010 .010 .012 -.002 .000 -.001 O7 .2369 .4407 .4736 .0118 .013 .008 .015 -.005 .002 .001 O8 .2431 .1254 .5343 .0107 .011 .011 .010 -.001 -.001 .003 O9 .3276 .4292 .2756 .0089 .012 .006 .008 -.005 .000 -.003 O10 .3826 .1088 .0507 .0124 .009 .013 .015 -.003 .002 .000 O11 .4286 .1389 .1711 .0109 .012 .012 .009 -.002 .000 -.005 O12 .4805 .4848 .1248 .0125 .015 .016 .006 .008 -.005 -.003 O13 .7159 .3708 .2080 .0119 .012 .014 .010 -.001 -.002 -.001 O14 .7487 .1845 .1132 .0106 .008 .017 .007 -.001 .001 -.003