The cross-conjugated and non-conjugated tetracene dimers mPhTc2 and mAdTc2 and the corresponding tetracene monomers PhTc and AdTc were synthesized through a stepwise substitution of 5,12naphthacenequinone by adapting protocols used to form tetracene and pentacene dimers (Scheme 1). states used in the calculation allow for states of higher multiplicity to be observed than in the CIS calculations.