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	hartrees
Energy at 0K	-262.610025
Energy at 298.15K	-262.613677
HF Energy	-262.162933
Nuclear repulsion energy	120.697128

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3587	3431	0.49
2	A₁	1830	1750	329.91
3	A₁	1324	1267	48.39
4	A₁	939	898	16.86
5	A₁	534	511	6.66
6	A₂	496	474	0.00
7	B₁	756	723	83.27
8	B₁	583	558	307.85
9	B₂	3586	3430	69.99
10	B₂	1539	1472	78.91
11	B₂	1101	1053	489.92
12	B₂	601	575	61.85

Atom	y (Å)	z (Å)
C1	0.000	0.112
O2	0.000	1.334
O3	1.108	-0.695
O4	-1.108	-0.695
H5	1.912	-0.117
H6	-1.912	-0.117

	C1	O2	O3	O4	H5	H6
C1		1.2220	1.3709	1.3709	1.9254	1.9254
O2	1.2220		2.3117	2.3117	2.4000	2.4000
O3	1.3709	2.3117		2.2168	0.9894	3.0749
O4	1.3709	2.3117	2.2168		3.0749	0.9894
H5	1.9254	2.4000	0.9894	3.0749		3.8234
H6	1.9254	2.4000	3.0749	0.9894	3.8234

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	O3	H5	108.233	C1	O4	H6	108.233
O2	C1	O3	126.047	O2	C1	O4	126.047
O3	C1	O4	107.905

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

using model chemistry: CCD/3-21G*

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

using model chemistry: CCD/3-21G*

States and conformations

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