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Transient absorption spectroscopy of the [Fe(2 CH3-phen)3]2+ complex: Study of the high spin ↔ low spin relaxation of an isolated iron(II) complex

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Academic year: 2021

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Figure 1. Optical absorption spectrum at 300 K of: (a) our [Fe(phen) 3 ] 2+ and [Fe(2 CH 3 phen) 3 ] 2+ complexes in a CH 3 CN solution and (b) of the phenanthroline and phenanthroline-methyl in the same solvent.
Figure 2 presents the spectro temporal evolution of the differ ential absorption spectrum measured for [Fe(2 CH 3 phen) 3 ] 2+ with a sub nanosecond time resolution upon excitation by picosecond laser pulses centered at k p = 500 nm.
Figure 4. (a): Time resolved differential absorption spectrum of the [Fe(2 CH 3 -phen) 3 ] 2+ complexes after its excitation at k p  355 nm
Figure 6. Energy levels and non-radiative relaxations paths identified for the [Fe(2 CH 3 -phen) 3 ] 2+ complex dissolved in acetonitrile

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