Fig. 3. (a) 1H–13C refocussed INEPT NMR spectrum of hyperpolarised BnNH2 (35 mM) achieved via2-BnNH2 (5 mM) under SABRE in dichloromethane-d2 solution after transfer at 60 G and 308 K; (b) 15N NMR spectrum of 15N-labelled Bn15NH2 (35 mM) after SABRE transfer via2-BnNH2 (5 mM) at 60 G and 308 K which gives rise to hyperpolarised resonances for free (δ 24.42) and equatorially bound (δ –5.59) substrate; (c) single scan thermally polarised 13C NMR spectrum in CD2Cl2 (15.66 M) and (d) 4096 scan thermally polarised 15N NMR spectrum of BnNH2 (9.15 M).
