title: Poly[aqua-(μ(11)-4,6-dihy-droxy-benzene-1,3-disulfonato)-dipotassium].
abstract: 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.
authors.forename: Zhu-Lin
authors.initials: ZL
authors.lastname: Xie
authors.forename: Wu-Leng
authors.initials: WL
authors.lastname: Lai
authors.forename: Rui-Qing
authors.initials: RQ
authors.lastname: Yang
authors.forename: Yong-Rong
authors.initials: YR
authors.lastname: Xie