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	hartrees
Energy at 0K	-205.636959
Energy at 298.15K	-205.639308
Nuclear repulsion energy	70.126300

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3794	3648	71.98
2	A'	1805	1736	131.67
3	A'	1327	1275	181.77
4	A'	889	855	151.13
5	A'	661	636	75.72
6	A"	612	589	97.13

Atom	x (Å)	y (Å)
H1	1.754	-0.139
O2	0.891	-0.576
N3	0.000	0.513
O4	-1.110	0.144

	H1	O2	N3	O4
H1		0.9673	1.8713	2.8784
O2	0.9673		1.4074	2.1272
N3	1.8713	1.4074		1.1703
O4	2.8784	2.1272	1.1703

Number	Element	Mulliken
1	H	0.326
2	O	-0.376
3	N	0.225
4	O	-0.175

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

using model chemistry: B3PW91/6-31G(2df,p)

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
	2.062	0.437	0.000	2.108
CHELPG
AIM
ESP

	x	y	z
x	3.730	-0.434	0.006
y	-0.434	2.021	-0.006
z	0.006	-0.006	1.478

<r²>	33.595
(<r²>)^1/2	5.796

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

using model chemistry: B3PW91/6-31G(2df,p)

States and conformations

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