As part of our systematic research on the acentric rare earth chalcogenides, the ErAlGeS5/KBr, Er3AgGeS7/KBr and Er6Ge3S14/KBr systems were investigated and thr
The title compound 2,2-dithiophene-naphthopyran (C21H14OS2, Mr = 346.44) was synthesized and characterized by IR, 1H NMR, elemental analysis and single-crystal