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	hartrees
Energy at 0K	-42.363687
Energy at 298.15K	-42.365988
Nuclear repulsion energy	38.822114

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3741	3613	58.45
2	A'	1762	1702	145.97
3	A'	1310	1265	196.43
4	A'	861	831	169.35
5	A'	629	608	66.64
6	A"	590	570	118.49

Atom	x (Å)	y (Å)
H1	1.751	-0.210
O2	0.858	-0.615
N3	0.000	0.537
O4	-1.150	0.203

	H1	O2	N3	O4
H1		0.9804	1.9034	2.9296
O2	0.9804		1.4358	2.1674
N3	1.9034	1.4358		1.1970
O4	2.9296	2.1674	1.1970

Number	Element	Mulliken
1	H	0.377
2	O	-0.346
3	N	-0.007
4	O	-0.024

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

using model chemistry: B3LYP/CEP-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
	2.202	0.567	0.000	2.273
CHELPG
AIM
ESP

	x	y	z
x	3.957	-0.542	0.000
y	-0.542	2.024	0.000
z	0.000	0.000	1.121

<r²>	29.262
(<r²>)^1/2	5.409

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

using model chemistry: B3LYP/CEP-31G*

States and conformations

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