Equatorial restriction of the photoinduced Jahn-Teller switch in Mn(iii)-cyclam complexes.

ABSTRACT: Ultrafast transient absorption spectra were recorded for solutions of [Mn^III(cyclam)(H₂O)(OTf)][OTf]₂ (cyclam = 1,4,8,11-tetraazacyclotetradecane and OTf = trifluoromethanesulfonate) in water to explore the possibility to restrict the equatorial expansion following photoexcitation of the d_xy ← d_z² electronic transition, often resulting in a switch from axial to equatorial Jahn-Teller distortion in Mn^III complexes. Strong oscillations were observed in the excited state absorption signal and were attributed to an excited state wavepacket. The structural rigidity of the cyclam ligand causes a complex reaction coordinate with frequencies of 333, 368, 454 and 517 cm^-1, and a significantly short

SUBMITTER: Phelps R 

PROVIDER: S-EPMC10284123 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature