A negligible CT character of the lowest excited state of a novel complex of zinc tetraphenylporphyrin with axially bonded 2-(4-methoxy-trans-styryl)quinoline-1-oxide ligand: Experimental studies and TD DFT/CAM B3LYP [6-31G(d,p)] calculations

Zinc atom in ZnTPP-MSQNO complex is 0.365 Å pulled out of the porphyrin plane towards the MSQNO ligand. The ground state of this complex is strongly polar (7.37 D) and direction of the dipole moment (red arrow) is nearly parallel to the short inertial axis of the molecule and perpendicular to the porphyrin plane.