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	hartrees
Energy at 0K	-264.621451
Energy at 298.15K	-264.625240
HF Energy	-263.761280
Nuclear repulsion energy	123.841572

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3874	3646	15.58
2	A₁	1893	1782	521.40
3	A₁	1329	1251	29.02
4	A₁	1007	947	16.02
5	A₁	557	524	5.92
6	A₂	537	506	0.00
7	B₁	827	778	58.34
8	B₁	605	570	208.90
9	B₂	3871	3643	184.34
10	B₂	1519	1430	149.25
11	B₂	1204	1133	419.78
12	B₂	617	580	53.48

Atom	y (Å)	z (Å)
C1	0.000	0.099
O2	0.000	1.299
O3	1.084	-0.677
O4	-1.084	-0.677
H5	1.836	-0.077
H6	-1.836	-0.077

	C1	O2	O3	O4	H5	H6
C1		1.1998	1.3338	1.3338	1.8446	1.8446
O2	1.1998		2.2543	2.2543	2.2949	2.2949
O3	1.3338	2.2543		2.1687	0.9617	2.9814
O4	1.3338	2.2543	2.1687		2.9814	0.9617
H5	1.8446	2.2949	0.9617	2.9814		3.6722
H6	1.8446	2.2949	2.9814	0.9617	3.6722

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	O3	H5	105.807	C1	O4	H6	105.807
O2	C1	O3	125.610	O2	C1	O4	125.610
O3	C1	O4	108.780

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

using model chemistry: CCSD/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: CCSD/cc-pVTZ

States and conformations

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