NaCo2Se2O10H3 Krickl R, Wildner M European Journal of Mineralogy 19 (2007) 805-816 Crystal chemistry of synthetic Co- and Ni-analogues of natrochalcite - the shortest known hydrogen bonds among mineral-type compounds Part I: single-crystal X-ray structures Sample: T = 293 K _database_code_amcsd 0007250 8.939 6.382 7.554 90 115.09 90 C2/m atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Na 0 .5 .5 .0242 .0201 .0300 .0242 0 .0109 0 Co .25 .25 0 .0111 .0105 .0107 .0119 .0001 .0046 -.0001 Se .08896 0 .29501 .0098 .0087 .0112 .0090 0 .0033 0 O1 .18607 0 .14883 .0143 .0175 .0136 .0176 0 .0130 0 O2 .23093 0 .51570 .0191 .0177 .0241 .0103 0 .0008 0 O3 -.02689 .21186 .24960 .0141 .0119 .0123 .0162 .0029 .0040 -.0004 Oh .15206 .5 .08207 .0119 .0104 .0133 .0126 0 .0054 0 H1 .059 .5 .039 .5 .006 H2 .189 .5 .200 .036