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	hartrees
Energy at 0K	-264.753736
Energy at 298.15K	-264.757496
HF Energy	-264.753736
Nuclear repulsion energy	123.565476

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3871	3694	19.91
2	A₁	1902	1816	488.67
3	A₁	1308	1248	40.37
4	A₁	1014	968	10.61
5	A₁	550	525	6.95
6	A₂	541	516	0.00
7	B₁	804	767	72.77
8	B₁	616	588	223.89
9	B₂	3868	3691	168.30
10	B₂	1520	1451	170.71
11	B₂	1186	1132	421.00
12	B₂	606	578	57.57

Atom	y (Å)	z (Å)
C1	0.000	0.097
O2	0.000	1.304
O3	1.085	-0.679
O4	-1.085	-0.679
H5	1.838	-0.075
H6	-1.838	-0.075

	C1	O2	O3	O4	H5	H6
C1		1.2074	1.3339	1.3339	1.8463	1.8463
O2	1.2074		2.2605	2.2605	2.2980	2.2980
O3	1.3339	2.2605		2.1703	0.9655	2.9853
O4	1.3339	2.2605	2.1703		2.9853	0.9655
H5	1.8463	2.2980	0.9655	2.9853		3.6767
H6	1.8463	2.2980	2.9853	0.9655	3.6767

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	O3	H5	105.710	C1	O4	H6	105.710
O2	C1	O3	125.557	O2	C1	O4	125.557
O3	C1	O4	108.886

All results from a given calculation for H₂CO₃ (Carbonic acid)

using model chemistry: HSEh1PBE/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
	Home All data for one species Geometry Experimental Experimental Geometries Same bond/angle many molecules Internal Coordinates by type Bond angles Calculated Calculated geometry Rotational constant Moments of inertia Products of moments of inertia BSE Bond lengths Show me a calculated geometry Comparisons Bonds, angles Rotational Constants Products of moments of inertia Point group Bad Calculations Bad moment of inertia Tutorials and Explanations Angle formulas Vibrations Experimental Vibrational frequencies Calculated Frequencies Scale factors Reactions Entropies Ions List Ions Energy Calculated Ionization Energy Compare Ionzation energy Electron Affinity Calculated Electron affinity Compare Electron affinity Proton Affinity Calculated Proton affinity Compare Proton affinity Ionization changes point group Experimental One molecule all properties One property a few molecules Enthalpy of formation Entropy Integrated Heat Capacity Heat Capacity Rotational Constants Vibrational Frequencies Dipole moment Ionization Energy Polarizability Quadrupole Point Groups Geometry Experimental Geometries Internal Coordinates by type Bond angles Rotational Constants Point Groups Diatomic bond lengths Vibrations Vibrational frequencies Diatomic Triatomics Energy Atomization Energy Internal Rotation Electrostatics Dipole Quadrupole Polarizability Reference Data Reference states Spin Splittings Molecules with good enthalpy Enthalpy at 0 Kelvin Calculated Energy Optimized Energy Energy 298K Minimum conformation Hydrogen bonds H bond with counterpoise Reaction Reaction Energy 0K Reaction Energy 298K Internal Rotation Barriers to internal rotation Rotational barrier and dipole Rotational Barrier 2 molecules Orbital HOMO LUMO gap HOMO Orbital Energies Nuclear repulsion energy Correlation Full vs Frozen core energies Partial correlation energies Ion Calculated Ionization Energy Vertical ionization Energy Calculated Electron affinity Calculated Proton affinity Atom charge differences Excited State Singlet triplet gap Electronic state Transition state Basis Set Extrapolation BSE energy BSE Bond lengths Geometry Calculated geometry AIM bond orders One type of bond Rotation Rotational constant Products of moments of inertia Moments of inertia Inertial defects Second moments Point group State symmetry <r2> Sorted by r2 Z-matrix Bad Calculations Bad moment of inertia Bad Calculated Bond Lengths Bad point group Worst molecules Vibrations Frequencies Animated vibrations Anharmonic Zero point energy (ZPE) Scale Factors Scale factors Scale factor uncertainty Calculate a scale factor Why scale vibrations Set scaling factors Bad Calculations Bad Vib. 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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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Number	Element	Mulliken
1	C	0.724
2	O	-0.482
3	O	-0.473
4	O	-0.473
5	H	0.352
6	H	0.352

	x	y	z	Total
	0.000	0.000	-0.116	0.116
CHELPG
AIM
ESP

<r²>	59.845
(<r²>)^1/2	7.736

All results from a given calculation for H2CO3 (Carbonic acid)

using model chemistry: HSEh1PBE/6-31G**

States and conformations

All results from a given calculation for H₂CO₃ (Carbonic acid)