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	hartrees
Energy at 0K	-205.507359
Energy at 298.15K	-205.509608
Nuclear repulsion energy	68.408228

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3643	3593	42.52
2	A'	1740	1716	143.65
3	A'	1236	1219	163.12
4	A'	804	793	97.52
5	A'	562	554	96.09
6	A"	600	592	96.35

Atom	x (Å)	y (Å)
H1	1.778	-0.164
O2	0.908	-0.617
N3	0.000	0.533
O4	-1.130	0.171

	H1	O2	N3	O4
H1		0.9817	1.9098	2.9273
O2	0.9817		1.4651	2.1847
N3	1.9098	1.4651		1.1862
O4	2.9273	2.1847	1.1862

Number	Element	Mulliken
1	H	0.323
2	O	-0.359
3	N	0.216
4	O	-0.180

All results from a given calculation for HNO₂ (Nitrous acid)

using model chemistry: PBEPBE/6-31G**

States and conformations

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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Calc. vs exp. Bad Vib. HF vs MP2 Bad scale factors Low excited states Oddities NaCN Is not linear FAQ Help Units Choose Units Energy Bond length Rotational Constant Moment of Inertia Dipole and Quadrupole Polarizability Explanations Hartree cm-1 Debye Credits Just show me Show me a calculated geometry Summary Using older interface Limit Basis sets Method options List Recent molecules Choose a few Molecules Number of atoms By heavy atoms Diatomics InChI Deuterated Dimers Geometry Point group Point group count Bonds types Isodesmic reactions Bad point group Multiple conformers, states Vibrations Big anharmonicity Energy Enthalpy at 0 Kelvin Similar molecules Similar Isomers Cis/trans Tautomers Multiple conformers, states Ions, Dipoles, etc. List Ions Ionization changes point group Dipole Quadrupole Polarizability Proton Affinities Index of CCCBDB Feedback Error form Wants
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	x	y	z	Total
	1.898	0.529	0.000	1.971
CHELPG
AIM
ESP

	x	y	z
x	3.885	-0.537	0.000
y	-0.537	1.930	0.000
z	0.000	0.000	1.165

<r²>	34.967
(<r²>)^1/2	5.913

All results from a given calculation for HNO2 (Nitrous acid)

using model chemistry: PBEPBE/6-31G**

States and conformations

All results from a given calculation for HNO₂ (Nitrous acid)