C5FH/FG2 probe

A C5FH probe, a powerful tool for analyzing fluorine-containing compounds, is revised and equipped with a field gradient coil, to be a C5FH/FG2 probe. By utilizing field gradient pulses, two-dimensional ¹³C- ¹H correlation measurements with ¹⁹F decoupling, for example, can be performed in a short time.

Fig.1　C5FH/FG2 probe (for 500MHz)

Fig.2　¹³C-¹H HMQC spectra of CF₃CHFCF₂OCH₂CH₃

Without ¹⁹F decoupling

With ¹⁹F decoupling
Spectrometer: JNM-ECA500

For fluorine-containing compounds, ¹⁹F decoupling removes splittings due to couplings with ¹⁹F nuclei and simplify the spectra, as shown in Fig.2. Thus, a C5FH/FG2 probe permits easy and short-time measurements in multi-dimensional NMR spectroscopy.