A novel heterometallic dinuclear compound: rac-pentaaqua-1κ5O-(μ-2-sulfidoacetato-1:2κ3O:O',S)bis(2-sulfidoacetato-2κ2O,S)manganese(II)tin(IV).

The title racemic heterometallic dinuclear compound, [MnSn(C(2)H(2)O(2)S)(3)(H(2)O)(5)], (I), contains one main group Sn(IV) metal centre and one transition metal Mn(II) centre, and, by design, links the Mn(II) centre to the building unit of the (Δ/Λ) [SnL(3)](2-) complex anion (L is the 2-sulfidoacetate dianion). In this cluster, the Sn(IV) centre of the (Δ/Λ) [SnL(3)](2-) unit is coordinated by three O atoms and three S atoms from three L ligands to form an [SnO(3)S(3)] octahedral coordination environment. The Mn(II) centre is in an [MnO(6)] octahedral coordination environment, with five O atoms from five water molecules and the sixth from the μ(2)-L ligand of the (Δ/Λ) [SnL(3)](2-) unit. Between adjacent dinuclear molecules, there are many hydrogen-bond interactions of O-H···O, O-H···S, C-H···O and C-H···S types. Of these, eight pairs of O-H...O hydrogen bonds fuse all the dinuclear molecules into two-dimensional supramolecular sheets along the bc plane. Adjacent supramolecular sheets are further connected through O-H···S hydrogen bonds to give a three-dimensional supramolecular network.