Erratum: NMR measurement of the nuclear shielding isotope shift in molecular hydrogen

Rapid detection of donor-dependent photocatalytic hydrogen evolution by NMR spectroscopy

“…[14][15][16] The observed coupling constant for HD is 43 Hz, which is a typical value for HD. [14][15][16] The difference in the chemical shis of H 2 and HD is due to variation of the nuclear magnetic screening constants with interatomic separation as a consequence of the zero-point energy in vibration. 17,18 Importantly, NMR spectroscopy can detect H 2 and HD species from the photocatalytic hydrogen evolution reaction.…”

“…13 Other peaks at 4.66, 4.59, and 4.52 ppm are assigned to the HD. 14–16 The observed coupling constant for HD is 43 Hz, which is a typical value for HD. 14–16 The difference in the chemical shifts of H 2 and HD is due to variation of the nuclear magnetic screening constants with interatomic separation as a consequence of the zero-point energy in vibration.…”

“…The observed peak splitting of the three peaks is due to the heteronuclear coupling between hydrogen and deuterium atoms. 14–16 The observed chemical shift for H 2 in methanol/D 2 O is 4.56 ppm. The observed chemical shifts of HD in methanol/D 2 O are 4.60, 4.53, and 4.46 ppm (Fig.…”

“…The observed peak splitting of the three peaks is due to the heteronuclear coupling between hydrogen and deuterium atoms. [14][15][16] The observed chemical shi for H 16 Therefore, it is expected that 2-propanol induces lower mobility for the hydrogen, probably because of the rotation or diffusional freedom of hydrogen molecules. The solvation environment of hydrogen inuences the molecular mobility of hydrogen species in the photocatalytic hydrogen evolution reaction.…”

“…The similarity in the coupling constants for the different solvents indicates that the chemical bonding between hydrogen and deuterium is consistent. 14–16 Interestingly, the fullwidth at half maximum (FWHM) values for the H 2 and HD signals are dependent on the solvent. The FWHM values for the H 2 signal are 1.48, 2.24, and 3.51 Hz in methanol/D 2 O, ethanol/D 2 O, and 2-propanol/D 2 O, respectively.…”