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Experimental UV–vis spectra of H2[(tBu)4Pc] and Zn[(tBu)4Pc]Pc in chloroform (TOP) and the sTD-DFT calculated spectra of H2Pc and ZnPc calculated by using the CAM-B3LYP functional with various double-ζ basis sets. The geometries of the complexes were optimized in the gas phase at the BP86/def2-SVP level of theory. The bandwidths in the simulated spectra were set to 0.05 eV.
