Electronic and crystallographic structures of trithiadiazepines
Abstract
1,3λ4δ2,5,2,4-Trithiadiazepine (1) and its benzo derivative (2) have planer delocalised 10π and 14π aromatic structures, respectively; in the dihydro compound (3) the five heteroatoms are co-planer, with the approximately cis and trans periplaner methylene protons rapidly interconverting.