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	hartrees
Energy at 0K	-264.644394
Energy at 298.15K	-264.648166
HF Energy	-263.765030
Nuclear repulsion energy	123.650611

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3849	3704	14.10
2	A₁	1858	1788	548.94
3	A₁	1319	1270	26.07
4	A₁	998	960	16.73
5	A₁	556	535	6.17
6	A₂	530	510	0.00
7	B₁	818	787	52.82
8	B₁	602	579	207.24
9	B₂	3847	3702	189.10
10	B₂	1499	1443	143.18
11	B₂	1197	1152	424.41
12	B₂	612	589	49.71

Atom	y (Å)	z (Å)
C1	0.000	0.100
O2	0.000	1.303
O3	1.084	-0.679
O4	-1.084	-0.679
H5	1.842	-0.083
H6	-1.842	-0.083

	C1	O2	O3	O4	H5	H6
C1		1.2028	1.3350	1.3350	1.8507	1.8507
O2	1.2028		2.2587	2.2587	2.3049	2.3049
O3	1.3350	2.2587		2.1689	0.9632	2.9860
O4	1.3350	2.2587	2.1689		2.9860	0.9632
H5	1.8507	2.3049	0.9632	2.9860		3.6833
H6	1.8507	2.3049	2.9860	0.9632	3.6833

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	O3	H5	106.150	C1	O4	H6	106.150
O2	C1	O3	125.674	O2	C1	O4	125.674
O3	C1	O4	108.651

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

using model chemistry: QCISD/aug-cc-pVTZ

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: QCISD/aug-cc-pVTZ

States and conformations

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