Keywords:The synthesis of 2,6-dialkoxy-9,10-bis(1,3-dithiol-2-ylidene)-9,10-dihydroanthracene derivatives 15 and 16 is described. Solution electrochemistry shows that 15 and 16 display three redox waves, representing the sequential formation of the dication, radical trication and tetracation species in an E q E q E q process. The X-ray crystal structures of neutral compounds 15 and 16 and the charge transfer complex (15) 2+ (TCNQ -• ) 2 ⋅ 2MeCN are reported. The neutral molecules adopt a saddlelike conformation; the bis(1,3-dithiole)benzoquinone system [ ‡] Part 1: Ref. [3e] [a]