Polkanovite Pivan J Y, Guerin R, Sergent M Journal of the Less-Common Metals 107 (1985) 249-258 Rh12As7, a host structure for rare earth elements: Crystal structures of Rh12As7 and Ho2Rh12As7 Locality: synthetic Note: x(RhII) corrected _database_code_amcsd 0014151 9.297 9.297 3.657 90 90 120 P6_3/m atom x y z occ Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) RhI .3797 .8644 .25 .71 .0015 .0014 .026 .0009 0 0 RhII .2347 .2436 .25 1.06 .0053 .0018 .023 .0015 0 0 AsI .4466 .1608 .25 .67 .0016 .0013 .025 .0010 0 0 AsII 0 0 .133 .25 1.70 .0013 .0013 .08 .0004 0 0