CCCBDB listing of experimental data page 2

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Property	Value	Uncertainty	units	Reference
Hfg(298.15K)	358.43	10.00	kJ mol^-1	Gurvich
Hfg(0K)	358.40	10.00	kJ mol^-1	Gurvich
Entropy (298.15K)	181.22		J K^-1 mol^-1	Gurvich
Integrated Heat Capacity (0 to 298.15K)	8.60		kJ mol^-1	Gurvich
Heat Capacity (298.15K)	29.19		J K^-1 mol^-1	Gurvich

Mode Number	Symmetry	Frequency			Intensity			Comment	Description
Mode Number	Symmetry	Fundamental(cm^-1)	Harmonic(cm^-1)	Reference	(km mol^-1)	unc.	Reference	Comment	Description
1	Σ	3126	3283	2007Iri:389

Description	Value	unc.	Connectivity				Reference	Comment
Description	Value	unc.	Atom 1	Atom 2	Atom 3	Atom 4	Reference	Comment
rNH	1.036		1	2			1979HUB/HER	re

Atom	x (Å)	y (Å)	z (Å)
N1	0.0000	0.0000	0.0000
H2	0.0000	0.0000	1.0362

	N1	H2
N1		1.0362
H2	1.0362

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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Energy (cm^-1)	Degeneracy	reference	description
0	3	1979HUB/HER	³Σ^-
12687.8	2	1999RIN/GER	¹Δ
21197	1	Gurvich	¹Σ⁺

State	Config	State description	Conf description	Exp. min.	Dipole (Debye)				Reference	comment	Point Group	Components
State	Config	State description	Conf description	Exp. min.	x	y	z	total	Reference	comment	Point Group	dipole	quadrupole
1	1	³Σ^-	C_∞v	True							C_∞v	1	1
2	1	¹Δ	C_∞v	True
3	1	¹Σ⁺	C_∞v	True							C_∞v	1	1

squib	reference	DOI
1979HUB/HER	Huber, K.P.; Herzberg, G., Molecular Spectra and Molecular Structure. IV. Constants of Diatomic Molecules, Van Nostrand Reinhold Co., 1979	10.1007/978-1-4757-0961-2
1999RIN/GER	J.L. Rinnenthal, K Gericke Direct High-Resolution Determination of the Singlet Triplet Splitting in NH Using Stimulated Emission Pumping, J. Mol. Spec. 198, 115-12, (1999)	10.1006/jmsp.1999.7947
2007Iri:389	KK Irikura "Experimental Vibrational Zero-Point Energies: Diatomic Molecules" J. Phys. Chem. Ref. Data 36(2), 389, 2007	10.1063/1.2436891
Gurvich	Gurvich, L.V.; Veyts, I. V.; Alcock, C. B., Thermodynamic Properties of Individual Substances, Fouth Edition, Hemisphere Pub. Co., New York, 1989
webbook	NIST Chemistry Webbook (http://webbook.nist.gov/chemistry)	10.18434/T4D303

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Experimental data for NH+ (imidogen cation)

Experimental data for NH⁺ (imidogen cation)