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	hartrees
Energy at 0K	-204.344051
Energy at 298.15K	-204.346236
Nuclear repulsion energy	65.440736

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3297	3267	10.86
2	A'	1433	1420	55.57
3	A'	1156	1145	167.67
4	A'	821	813	73.66
5	A'	516	511	28.11
6	A"	558	553	100.90

Atom	x (Å)	y (Å)
H1	-1.832	-0.181
O2	-0.943	-0.671
N3	0.000	0.565
O4	1.172	0.198

	H1	O2	N3	O4
H1		1.0153	1.9786	3.0284
O2	1.0153		1.5546	2.2867
N3	1.9786	1.5546		1.2282
O4	3.0284	2.2867	1.2282

Number	Element	Mulliken
1	H	0.349
2	O	-0.370
3	N	0.236
4	O	-0.215

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

using model chemistry: PBEPBE/3-21G

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
	-1.925	0.709	0.000	2.052
CHELPG
AIM
ESP

	x	y	z
x	3.841	0.581	0.000
y	0.581	1.606	0.000
z	0.000	0.000	0.659

<r²>	37.293
(<r²>)^1/2	6.107

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

using model chemistry: PBEPBE/3-21G

States and conformations

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