New Transition Metal Oxo-Thiostannate: Synthesis, Characterization, and Investigation of its Photocatalytic Properties: New Transition Metal Oxo-Thiostannate: Synthesis, Characterization, and Investigation of its Photocatalytic Properties

The new transition metal oxo-thiostannate {[Ni(cyclen)](6)[Sn6S12O2(OH)(6)]}center dot 2(ClO4)center dot 19H(2)O (1) was prepared under hydrothermal conditions using Na4SnS4 center dot 14H(2)O and [Ni(cyclen)](ClO4)(2) as reactants. In the crystal structure the rare [Sn6S12O2(OH)(6)](10-) anion is observed, which is composed of SnS2O(OH)(3) and SnS4O2 octahedra, and SnS4 tetrahedra sharing edges and corners. The anion is expanded by six Ni2+ centered complexes via Ni-S and Ni-OH bonds. The photocatalytic properties for the visible light driven hydrogen evolution reaction shows that 26.6 mmol center dot g(-1) H-2 were evolved after 3 h.