The first polymeric thiogallate with lanthanide-containing counter cation, [Dy2(en)6(μ2-OH)2]Ga4S8

The title compound, [Dy2(en)6(μ2-OH)2]Ga4S8 (en = ethylenediamine), contains 1D infinite sinusoidal image anions and hydroxy bridged dinuclear dysprosium complex cations. Two bridging hydroxy ions connect two inversion-related Dy3+ ions to form a centrosymmetric dimer, in which a Dy2O2 rhomboidal core is formed. The title compound is the only example of the thiogallates with lanthanide-containing counter cation.