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	hartrees
Energy at 0K	-264.355568
Energy at 298.15K	-264.359293
HF Energy	-263.664166
Nuclear repulsion energy	122.596412

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3846	3612	13.80
2	A₁	1843	1731	552.66
3	A₁	1295	1216	31.00
4	A₁	988	928	22.37
5	A₁	546	513	5.38
6	A₂	524	492	0.00
7	B₁	785	738	53.71
8	B₁	610	573	249.52
9	B₂	3845	3611	208.28
10	B₂	1475	1386	171.68
11	B₂	1174	1103	441.77
12	B₂	596	560	50.55

Atom	y (Å)	z (Å)
C1	0.000	0.102
O2	0.000	1.320
O3	1.089	-0.687
O4	-1.089	-0.687
H5	1.854	-0.091
H6	-1.854	-0.091

	C1	O2	O3	O4	H5	H6
C1		1.2179	1.3446	1.3446	1.8636	1.8636
O2	1.2179		2.2828	2.2828	2.3292	2.3292
O3	1.3446	2.2828		2.1785	0.9692	3.0026
O4	1.3446	2.2828	2.1785		3.0026	0.9692
H5	1.8636	2.3292	0.9692	3.0026		3.7073
H6	1.8636	2.3292	3.0026	0.9692	3.7073

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	O3	H5	106.171	C1	O4	H6	106.171
O2	C1	O3	125.895	O2	C1	O4	125.895
O3	C1	O4	108.211

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

using model chemistry: MP2=FULL/6-31+G**

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=FULL/6-31+G**

States and conformations

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