Figure 1
The asymmetric units (a) of Na2S2O3·2 H2O, and (b) of Na2S2O3·5 H2O, with a comparison of relative positions and displacement ellipsoids of the non-hydrogen atoms obtained from structure determinations at 100 K (filled atoms) and at 200 K (contours of ellipsoids drawn around filled atoms). Ellipsoids are drawn at the 80% probability level, hydrogen bonds as dashed lines. |