multinuclear NMR spectroscopy will be the "everyday"
method to characterize our new compounds, we expect
to synthesize and focus on paramagnetic species
as well. For the characterization of paramagnetic
transition-metal complexes we routinely use a
state-of-the-art EPR spectrometer. The Electron-Paramagnetic-Resonance
spectrometer used is a JEOL continuous wave
spectrometer JES-FA200 equipped
with an X-band high-power low-noise Dual-Gunn
oscillator bridge (microwave source) and a high
sensitivity cylindrical mode cavity. For high-accuracy measurements
the system carries a Hall field controller as
well as an X-band digital frequency counter. For
low-temperature experiments the spectrometer is
equipped with a helium cryostat system to record
spectra down to as low as 4 K.