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	hartrees
Energy at 0K	-204.663833
Energy at 298.15K	-204.666280
Nuclear repulsion energy	72.361187

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	4140	3749	124.94
2	A'	2026	1835	148.13
3	A'	1506	1363	248.21
4	A'	1094	990	221.27
5	A'	799	724	19.74
6	A"	599	542	119.62

Atom	x (Å)	y (Å)
H1	1.725	-0.134
O2	0.869	-0.534
N3	0.000	0.490
O4	-1.085	0.122

	H1	O2	N3	O4
H1		0.9445	1.8346	2.8218
O2	0.9445		1.3429	2.0613
N3	1.8346	1.3429		1.1458
O4	2.8218	2.0613	1.1458

Number	Element	Mulliken
1	H	0.356
2	O	-0.486
3	N	0.399
4	O	-0.269

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

using model chemistry: HF/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
	2.395	0.578	0.000	2.464
CHELPG
AIM
ESP

	x	y	z
x	3.347	-0.237	0.000
y	-0.237	1.784	0.000
z	0.000	0.000	1.426

<r²>	32.229
(<r²>)^1/2	5.677

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

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

States and conformations

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