Skip to main content
. Author manuscript; available in PMC: 2021 Oct 5.
Published in final edited form as: Angew Chem Int Ed Engl. 2020 Aug 11;59(41):17788–17797. doi: 10.1002/anie.201915306

Figure 5.

Figure 5.

Two routes for the production of 15N2-paranitrogen. A) A 15N4 labeled tetrazine is hyperpolarized by SABRE, which releases HP 15N2, when reacting with a strained alkyne. B) A 15N2-diazirine is hyperpolarized by SABRE, which releases HP 15N2 when irradiated by UV light.