Tetra- and tri-thioated derivatives of tetrakis[(ethoxycarbonyl)methoxy]tetrathiacalix[4]arenes were synthesized by thionation with Lawesson’s reagent in dry toluene. The prepared compounds’ structures were investigated by FT-IR, 1H NMR, 2DNMR, MALDI-TOF-MS, and X-ray crystallography إقراء المزيد