Complexation of Sn2Se6 with lanthanide(III) centers influenced by ethylene polyamines: Solvothermal syntheses, crystal structures, and optical properties of lanthanide selenidostannates

New lanthanide complexes concerning the Sn2Se6 ligand were solvothermally prepared, and the effect of ethylene polyamines on the complexation of Sn2Se6 with Ln(III) centers are observed.