Poly[[tetra­aqua­(μ(3)-naphthalene-1,6-disulfonato-κ(4) O (1):O (6),O (6′):O (6′′))strontium(II)] monohydrate]

In the crystal structure of the polymeric title compound, {[Sr(C(10)H(6)O(6)S(2))(H(2)O)(4)]·H(2)O}(n), the naphthalene-1,6-disulfonate dianion uses one –SO(3) unit to O,O′-chelate to an Sr(II) cation and its third O atom to bind to another Sr(II) cation. The other –SO(3) unit binds to yet another Sr(II) atom. The four coordinated water mol­ecules are monodentate but one is disordered over two positions in a 1:1 ratio. The μ(3)-bonding mode of the dianion generates a polymeric three-dimensional network; the network is consolidated by O—H⋯O hydrogen bonds. The Sr(II) cation exists in an undefined eight-coordinate environment.