Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)

Property	Value	Uncertainty	units	Reference	Comment
Hfg(298.15K)	91.04	0.08	kJ mol-1	2006Rus/Pin:6592
Hfg(0K)	90.54	0.08	kJ mol-1	2006Rus/Pin:6592
Entropy (298.15K)	210.76		J K-1 mol-1	JANAF
Integrated Heat Capacity (0 to 298.15K)	9.19		kJ mol-1	JANAF
Heat Capacity (298.15K)	29.86		J K-1 mol-1	webbook

Information can also be found for this species in the NIST Chemistry Webbook

Vibrational levels (cm^-1)

Mode Number	Symmetry	Frequency (cm-1)	Frequency Reference	Intensity (km mol-1)	Int. unc.	Intensity Reference	Comment
1	Σ	1904	Shim

Detailed diatomic data

ωe	ωexe	ωeye	Be	αe	ZPE	reference
1904.135	14.08836	0.0100467	1.704888	1.754158E-02	948.6467	2007Iri:389

vibrational zero-point energy: 952.1 cm^-1
Calculated vibrational frequencies for NO^- (nitric oxide anion).

Rotational Constants (cm^-1)
See section I.F.4 to change rotational constant units

A	B	C	reference	comment
	1.67195		1979HUB/HER

Calculated rotational constants for NO^- (nitric oxide anion).

Product of moments of inertia
10.08262	amu Å2		1.674284E-39	gm cm2

Geometric Data

Point Group C_∞v

Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees

Description	Value	unc.	Connectivity				Reference	Comment
			Atom 1	Atom 2	Atom 3	Atom 4
rNO	1.154	0.000	1	2			NISTdiatomic	r0

Cartesians

Atom	x (Å)	y (Å)	z (Å)
O1	0.0000	0.0000	0.0000
N2	0.0000	0.0000	1.1508

Atom - Atom Distances
Distances in Å

	O1	N2
O1		1.1508
N2	1.1508

Calculated geometries for NO^- (nitric oxide anion).

Bond descriptions
Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond

Bond Type	Count
N=O	1

Connectivity

Atom 1	Atom 2
O1	N2

Electronic energy levels (cm^-1)

Energy (cm-1)	Degeneracy	reference	description
0	2	1979HUB/HER	2Π
119.8	2	1979HUB/HER
38440	8	1979HUB/HER
43965.7	2	1979HUB/HER

Ionization Energies (eV)

Ionization Energy	I.E. unc.	vertical I.E.	v.I.E. unc.	Electron Affinity	E.A. unc.	reference
9.264	0.000	9.264		0.026	0.005	webbook

Dipole, Quadrupole and Polarizability
Electric dipole moment

Dipole (Debye)	Reference	comment
0.153	NSRDS-NBS10

Calculated electric dipole moments for NO^- (nitric oxide anion).
Electric quadrupole moment
Calculated electric quadrupole moments for NO^- (nitric oxide anion).
Electric dipole polarizability (ų)

alpha	unc.	Reference
1.698		1997Oln/Can:59

Calculated electric dipole polarizability for NO^- (nitric oxide anion).

References
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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
1997Oln/Can:59	TN Olney, NM Cann, G Cooper, CE Brion, Absolute scale determination for photoabsorption spectra and the calculation of molecular properties using dipole sum-rules, Chem. Phys. 223 (1997) 59-98	10.1016/S0301-0104(97)00145-6
2006Rus/Pin:6592	B Ruscic, RE Pinzon, ML Morton, NK Srinivasan, M-C Su, JW Sutherland, JV Michael "Active Thermochemical Tables: Accurate Enthalpy of Formation of Hydroperoxyl Radical, HO2" J. Phys. Chem. A 2006, 110, 6592-6601	10.1021/jp056311j
2007Iri:389	KK Irikura "Experimental Vibrational Zero-Point Energies: Diatomic Molecules" J. Phys. Chem. Ref. Data 36(2), 389, 2007	10.1063/1.2436891
JANAF	Chase, M.W., Jr.; Davies, C.A.; Downey, J.R., Jr.; Frurip, D.J.; McDonald, R.A.; Syverud, A.N., JANAF Thermochemical Tables (Third Edition), J. Phys. Chem. Ref. Data,Suppl. 1, 1985, 14, 1.
NISTdiatomic	NIST Diatomic Spectral Database (www.physics.nist.gov/PhysRefData/MolSpec/Diatomic/index.html)
NSRDS-NBS10	R. D. Nelson Jr., D. R. Lide, A. A. Maryott "Selected Values of electric dipole moments for molecules in the gas phase" NSRDS-NBS10, 1967
Shim	Shimanouchi, T. , Tables of Molecular Vibrational Frequencies, Consolidated Volume 1, NSRDS NBS-39
webbook	NIST Chemistry Webbook (http://webbook.nist.gov/chemistry)

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