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	hartrees
Energy at 0K	-262.614415
Energy at 298.15K	-262.618054
HF Energy	-262.160475
Nuclear repulsion energy	120.042364

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3558	3385	0.31
2	A₁	1775	1689	277.18
3	A₁	1301	1238	46.84
4	A₁	920	875	17.52
5	A₁	529	504	5.95
6	A₂	502	478	0.00
7	B₁	746	709	67.94
8	B₁	595	566	303.58
9	B₂	3557	3384	90.15
10	B₂	1513	1439	75.95
11	B₂	1076	1023	502.28
12	B₂	589	560	55.35

Atom	y (Å)	z (Å)
C1	0.000	0.115
O2	0.000	1.347
O3	1.110	-0.702
O4	-1.110	-0.702
H5	1.911	-0.117
H6	-1.911	-0.117

	C1	O2	O3	O4	H5	H6
C1		1.2326	1.3778	1.3778	1.9253	1.9253
O2	1.2326		2.3303	2.3303	2.4078	2.4078
O3	1.3778	2.3303		2.2197	0.9920	3.0772
O4	1.3778	2.3303	2.2197		3.0772	0.9920
H5	1.9253	2.4078	0.9920	3.0772		3.8226
H6	1.9253	2.4078	3.0772	0.9920	3.8226

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	O3	H5	107.553	C1	O4	H6	107.553
O2	C1	O3	126.337	O2	C1	O4	126.337
O3	C1	O4	107.327

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

using model chemistry: MP2/3-21G*

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: MP2/3-21G*

States and conformations

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