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	hartrees
Energy at 0K	-204.731989
Energy at 298.15K	-204.734425
HF Energy	-204.731989
Nuclear repulsion energy	72.402052

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	4118	3725	132.69
2	A'	2009	1818	175.08
3	A'	1493	1351	245.30
4	A'	1061	960	250.90
5	A'	796	720	26.38
6	A"	593	536	120.62

Atom	x (Å)	y (Å)
H1	1.726	-0.144
O2	0.868	-0.538
N3	0.000	0.488
O4	-1.084	0.129

	H1	O2	N3	O4
H1		0.9445	1.8387	2.8236
O2	0.9445		1.3445	2.0630
N3	1.8387	1.3445		1.1420
O4	2.8236	2.0630	1.1420

Number	Element	Mulliken
1	H	0.588
2	O	-0.624
3	N	0.358
4	O	-0.321

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

using model chemistry: HF/daug-cc-pVTZ

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
	2.373	0.603	0.000	2.449
CHELPG
AIM
ESP

	x	y	z
x	3.772	-0.254	0.000
y	-0.254	2.355	0.000
z	0.000	0.000	1.925

<r²>	32.470
(<r²>)^1/2	5.698

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

using model chemistry: HF/daug-cc-pVTZ

States and conformations

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