1 (T1T1) in mPhTc2 is 0.39 and 0.26 eV higher in energy than S 1 (3.679 eV at AM1-CISD) and S 2 (3.806 eV at AM1-CISD), respectively. The splitting between 1 (T1T1) and 5 (T1T1) is 0.04 eV in mPhTc2, confirming the hypothesis that interchromophore coupling is stronger in mPhTc2 than in mAdTc2. This is entirely consistent with the crossconjugated p-system linking the chromophores in mPhTc2