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	hartrees
Energy at 0K	-205.638876
Energy at 298.15K	-205.641235
Nuclear repulsion energy	70.158426

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3770	3576	69.44
2	A'	1836	1741	130.36
3	A'	1355	1285	201.45
4	A'	919	871	170.94
5	A'	672	637	63.65
6	A"	618	586	113.35

Atom	x (Å)	y (Å)
H1	1.759	-0.128
O2	0.892	-0.566
N3	0.000	0.513
O4	-1.112	0.133

	H1	O2	N3	O4
H1		0.9713	1.8718	2.8823
O2	0.9713		1.3999	2.1222
N3	1.8718	1.3999		1.1748
O4	2.8823	2.1222	1.1748

Number	Element	Mulliken
1	H	0.428
2	O	-0.469
3	N	0.263
4	O	-0.222

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

using model chemistry: mPW1PW91/6-31G*

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
	2.222	0.572	0.000	2.295
CHELPG
AIM
ESP

<r²>	33.597
(<r²>)^1/2	5.796

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

using model chemistry: mPW1PW91/6-31G*

States and conformations

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