3,4-dihydro-2H-1,5-benzodithiepine

spiro[1,3-benzodithiole-2,1'-cyclopentane]

2-(1,3,2-benzodithiaborol-2-yl)-1,3,2-benzodithiaborole

2,2'-spirobi[1,3-benzodithiole]

[1,4]benzodithiino[3,2-b]pyridine