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	hartrees
Energy at 0K	-41.541966
Energy at 298.15K	-41.544398
Nuclear repulsion energy	40.312840

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	4132	3710	123.48
2	A'	2027	1821	174.16
3	A'	1510	1356	284.92
4	A'	1112	998	234.84
5	A'	778	699	14.62
6	A"	595	534	146.17

Atom	x (Å)	y (Å)
H1	1.711	-0.186
O2	0.834	-0.561
N3	0.000	0.506
O4	-1.119	0.170

	H1	O2	N3	O4
H1		0.9540	1.8461	2.8529
O2	0.9540		1.3545	2.0856
N3	1.8461	1.3545		1.1687
O4	2.8529	2.0856	1.1687

Number	Element	Mulliken
1	H	0.432
2	O	-0.421
3	N	0.084
4	O	-0.095

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

using model chemistry: HF/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
	2.604	0.662	0.000	2.687
CHELPG
AIM
ESP

<r²>	27.922
(<r²>)^1/2	5.284

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

using model chemistry: HF/CEP-31G*

States and conformations

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