Ferric Iron Porphyrin as Studied by Single-Crystal CW and FT Pulsed ESR/ESTN(Electron Spin Transient Nutation) Spectroscopy
Ichimura, Andrew S,; Kazunobu, Sato,; Daisukc, Sliiomi,; Takeji Takui,; Koichi Itoh,;
Bulletin of Magnetic Resonance
The Fourier transform (FT) pulsed ESR/electron spin transient nutation(ESTN) spectroscopy was used to study the complex of FeCl3 with octaethylporphyrin , Fe(III)ClOEP. Fe(III)ClOEP is Jahn-Teller unstable at low temperature and with increasing temperature there occurs transition of the static to dynamic spectrum with broadened linewidths. The molecular reorientation process is associated with a real phonon transition between energetically different potentials.