title: Disodium tetra-aqua-bis(sulfato)iron(II).
abstract: In the title compound, [FeNa(2)(SO(4))(2)(H(2)O)(4)], the Fe(2+) cation is situated on a centre of inversion and is hexa-coordinated by four O atoms from water mol-ecules and two O atoms from two sulfate anions in an octa-hedral geometry. The coordination environment of Na(+) comprises six O atoms in a more distorted octa-hedral arrangement, with Na-O distances between 2.368 (1) and 2.612 (1) Å. The structure contains an extensive three-dimensional network of O-H⋯O hydrogen bonds.
authors.forename: Martin
authors.initials: M
authors.lastname: Hudák
authors.forename: Jesús García
authors.initials: JG
authors.lastname: Díaz
authors.forename: Jozef
authors.initials: J
authors.lastname: Kožíšek