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	hartrees
Energy at 0K	-262.637156
Energy at 298.15K	-262.640747
HF Energy	-262.158355
Nuclear repulsion energy	119.487673

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	A₁	3515	3409
2	A₁	1725	1673
3	A₁	1292	1253
4	A₁	886	859
5	A₁	517	501
6	A₂	491	476
7	B₁	723	701
8	B₁	586	568
9	B₂	3513	3407
10	B₂	1493	1448
11	B₂	1055	1023
12	B₂	572	555

Atom	y (Å)	z (Å)
C1	0.000	0.117
O2	0.000	1.355
O3	1.114	-0.706
O4	-1.114	-0.706
H5	1.916	-0.118
H6	-1.916	-0.118

	C1	O2	O3	O4	H5	H6
C1		1.2383	1.3850	1.3850	1.9299	1.9299
O2	1.2383		2.3431	2.3431	2.4162	2.4162
O3	1.3850	2.3431		2.2280	0.9946	3.0863
O4	1.3850	2.3431	2.2280		3.0863	0.9946
H5	1.9299	2.4162	0.9946	3.0863		3.8313
H6	1.9299	2.4162	3.0863	0.9946	3.8313

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	O3	H5	107.249	C1	O4	H6	107.249
O2	C1	O3	126.458	O2	C1	O4	126.458
O3	C1	O4	107.084

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

using model chemistry: MP4/3-21G

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: MP4/3-21G

States and conformations

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