. 2017 Jul 7;2(7):3214–3227. doi: 10.1021/acsomega.7b00356

Table 5. Vibrational Frequencies (in cm^–1) of Free and Adsorbed NH₃, NH₂, and NH.

	gas phase^a	adsorbed on a Ni(111) surface^a	gas phase (expt)^b	adsorbed on a Ni(111) surface (expt)^c
NH₃
N–H stretch (e)	3505	3465	3444	3360
	3504	3459	3444
N–H stretch (a₁)	3380	3341	3337	3270
HNH bend (e)	1623	1593	1627	1580
	1623	1590	1627
HNH bend (a₁)^d	1025	1137	950	1140
NH₂
N–H stretch (a₁)	3349	3438	3301
N–H stretch (a₁)	3254	3358	3219
HNH Bend (b₂)	1497	1514	1497
NH
N–H stretch	3169	3397	3283

This work.

Reference (53) (for NH₃), ref (54) (for NH₂), and ref (55) (for NH).

Reference (56).

HNH wagging mode.

Table 5. Vibrational Frequencies (in cm–1) of Free and Adsorbed NH3, NH2, and NH.