JEOL Resources

Documentation in support of your JEOL product.

INADEQUATE measurement using SuperCOOL probe

It is often difficult to unambiguously determine structures of molecules, which have many non-protonated carbon atoms. Because such compounds contain quaternary carbons, lack protons and bonding to quaternary carbons each other, HMBC (Heteronuclear Multiple Bond Correlation) experiment cannot provide long-range 1H-13C connectivity. Therefore, INADEQUATE (Incredible Natural Abundance DoublE QUAntum Transfer Experiment), which is 13C-13C correlation experiment at natural 13C abundance, represents a powerful tool for proton-diluted compounds.

Cryogenic probes: the development of “UltraCOOL” & “SuperCOOL” probes

In 2013, JEOL RESONANCE launched the cryogenic NMR probe systems,”UltraCOOL” and “SuperCOOL”. Delivering sensitivity far exceeding conventional room temperature probes together with ease of use beyond that previously associated with cooled probes, such as probe change whilst cooled, and variable temperature measurement capability, the products received a lot of positive response. However, many dramatic stories lay behind the birth of these products.

Analytical Instruments Documents

Other Resources

The following resources are available for the JEOL Analytical Instruments:


Corona - Glow Discharge (DART Ion Source)

February 22, 2020