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	hartrees
Energy at 0K	-264.312084
Energy at 298.15K	-264.315839
HF Energy	-263.643104
Nuclear repulsion energy	122.789202

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3760	3581	14.26
2	A₁	1895	1804	482.87
3	A₁	1341	1277	34.12
4	A₁	1000	952	13.72
5	A₁	551	525	5.88
6	A₂	543	517	0.00
7	B₁	797	759	86.56
8	B₁	621	592	237.36
9	B₂	3757	3578	159.80
10	B₂	1532	1459	135.00
11	B₂	1212	1154	446.01
12	B₂	606	577	57.64

Atom	y (Å)	z (Å)
C1	0.000	0.100
O2	0.000	1.313
O3	1.090	-0.684
O4	-1.090	-0.684
H5	1.853	-0.078
H6	-1.853	-0.078

	C1	O2	O3	O4	H5	H6
C1		1.2128	1.3429	1.3429	1.8618	1.8618
O2	1.2128		2.2754	2.2754	2.3173	2.3173
O3	1.3429	2.2754		2.1798	0.9747	3.0049
O4	1.3429	2.2754	2.1798		3.0049	0.9747
H5	1.8618	2.3173	0.9747	3.0049		3.7065
H6	1.8618	2.3173	3.0049	0.9747	3.7065

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	O3	H5	105.800	C1	O4	H6	105.800
O2	C1	O3	125.749	O2	C1	O4	125.749
O3	C1	O4	108.503

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

using model chemistry: QCISD/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
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All results from a given calculation for H2CO3 (Carbonic acid)

using model chemistry: QCISD/6-31G*

States and conformations

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