Na3HSiO4.H2O Schmid R L, Felsche J Acta Crystallographica C46 (1990) 1365-1368 Structure of trisodium hydrogenorthosilicate monohydrate _database_code_amcsd 0010162 7.898 5.960 11.142 90 105.57 90 P2_1/c atom x y z Biso Si .6907 .2087 .3647 .61 Na1 .25 .0102 .3342 1.24 Na2 .3990 .3071 .5667 1.30 Na3 .9772 -.2439 .4391 1.21 O1 .4902 .2715 .3826 1.10 O2 .7694 .0138 .4636 .89 O3 .8098 .4343 .3914 .90 O4 .6631 .1359 .2198 .97 O5 .0739 .3471 .2789 1.48 H11 .553 .887 .156 1.3 H51 -.001 .398 .316 1.0 H52 .143 .466 .285 .8