Poly[aqua-(µ(11)-4,6-dihy-droxy-benzene-1,3-disulfonato)-dipotassium].

In the title salt, [K(2)(C(6)H(4)O(8)S(2))(H(2)O)](n), both K(+) ions exhibit a seven-coordination with K-O bond lengths in the range 2.6600 (14) to 3.0522 (16) Å. One K(+) ion is coordinated by seven O atoms from the sulfonate and phenolic hy-droxy groups of six 4,6-dihy-droxy-benzene-1,3-disulfonate (L(2-)) anions while the other K(+) ion is coordinated by six O atoms from the sulfonate and phenolic hy-droxy groups of five L(2-) anions and one water O atom. The L(2-) anion exhibits chelating-bridging multidentate coordination to potassium, resulting in the formation of a cross-linked three-dimensional network.

1-(2-Bromo-2-de-oxy-ß-d-xylofuranos-yl)uracil.

In the title compound, C(9)H(11)BrN(2)O(5), the ribofuran-ose ring has a C2-exo, C3-endo twist configuration and is attached to the uracil unit via a ß-N(1)-glycosidic bond. The crystal structure is stabilized by two inter-molecular O-H⋯O inter-actions and one inter-molecular N-H⋯O inter-action.