view article

Figure 2
(a) The crystal structure of Na2SO3(H2O)7 in a projection along [001], showing the layered character with cationic water–sodium layers at x ≃ 0, [1 \over 2] alternating with sulfite layers (red polyhedra) at x[1 \over 4], [3 \over 4]. (b) The crystal structure of Na2CO3(H2O)7 in a projection along [00[\overline{1}]], showing the same type of layer stacking but a different orientation of the dimeric groups and adjacent carbonate anions at y[1 \over 2]. For clarity, hydrogen bonds are displayed only in the lower half of the figures, with moderate O—H⋯O hydrogen bonds shown as green lines, weak O—H⋯O bonds as yellow lines and O—H⋯S hydrogen bonds as orange lines.

Journal logoSTRUCTURAL
ISSN: 2053-2296
Follow Acta Cryst. C
Sign up for e-alerts
Follow Acta Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds