Available online 25 October 2013 Oleksandr Kysliak, Johannes Beck
Graphical abstract
Solvothermal reactions of the less-noble metals Mn, Fe, and Zn with elemental sulfur or/and selenium in liquid ammonia or methylamine gives a series of polyselenides and polysulfides. All compounds represent ionic structures with octahedral [M(NH3)6]2+and [M(NH2CH3)6]2+complex cations (M=Mn, Fe, Zn) and various polychalcogenide anions in form of chains consisting of three to six sulfur and/or selenium atoms.