Solvothermal Synthesis of One-dimensional Chalcogenides Containing Group 13 Elements

The solvothermal synthesis and characterisation of [C6H16N2][GaS2]2 (1), [C6H16N2][Ga2Se3(Se2)] (2), and mixed-metal phases with composition [C6H16N2][Ga2xInxSe3(Se2)] (0 < x < 2)(35), is described. These materials have been characterised by single-crystal and powder X-ray diffraction, thermogravimetric analysis and UV/Vis diffuse reflectance spectroscopy. The materials contain one-dimensional anionic chains. In 1, these chains consist of edge-linked GaS4 tetrahedra, whilst in 25, the chains contain perselenide (Se2)2 units and comprise alternating four-membered [M2Se2] and five-membered [M2Se3] rings (where M = Ga, In). Compounds 35 represent the first examples of ternary mixed-metal [M2Se3(Se2)]2 chains.