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	hartrees
Energy at 0K	-77.122332
Energy at 298.15K	-77.127994
HF Energy	-76.130728
Counterpoise corrected energy
CP Energy at 298.15K
Counterpoise optimized geometry corrected energy
CP opt. Energy at 298.15K
Nuclear repulsion energy	130.142218

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A_g	3343	3185	0.00
2	A_g	3165	3016	0.00
3	A_g	1719	1638	0.00
4	A_g	1463	1394	0.00
5	A_g	1399	1333	0.00
6	A_g	1228	1170	0.00
7	A_g	661	630	0.00
8	A_g	189	180	0.00
9	A_g	162	154	0.00
10	A_u	1088	1037	67.60
11	A_u	930	886	221.05
12	A_u	161	153	6.39
13	A_u	71	68	2.04
14	B_g	1069	1018	0.00
15	B_g	898	856	0.00
16	B_g	250	239	0.00
17	B_u	3410	3249	1517.95
18	B_u	3162	3013	170.30
19	B_u	1767	1684	774.62
20	B_u	1447	1379	5.81
21	B_u	1384	1319	23.19
22	B_u	1233	1175	397.59
23	B_u	677	645	55.36
24	B_u	238	227	45.34

Atom	x (Å)	y (Å)
C1	1.586	-1.138
C2	-1.586	1.138
O3	1.586	0.090
O4	-1.586	-0.090
O5	0.513	-1.925
O6	-0.513	1.925
H7	2.510	-1.733
H8	-2.510	1.733
H9	0.306	1.367
H10	-0.306	-1.367

	C1	C2	O3	O4	O5	O6	H7	H8	H9	H10
C1		3.9045	1.2285	3.3409	1.3312	3.7133	1.0992	5.0026	2.8133	1.9060
C2	3.9045		3.3409	1.2285	3.7133	1.3312	5.0026	1.0992	1.9060	2.8133
O3	1.2285	3.3409		3.1774	2.2836	2.7877	2.0445	4.4136	1.8080	2.3884
O4	3.3409	1.2285	3.1774		2.7877	2.2836	4.4136	2.0445	2.3884	1.8080
O5	1.3312	3.7133	2.2836	2.7877		3.9845	2.0068	4.7458	3.2987	0.9907
O6	3.7133	1.3312	2.7877	2.2836	3.9845		4.7458	2.0068	0.9907	3.2987
H7	1.0992	5.0026	2.0445	4.4136	2.0068	4.7458		6.1011	3.8041	2.8399
H8	5.0026	1.0992	4.4136	2.0445	4.7458	2.0068	6.1011		2.8399	3.8041
H9	2.8133	1.9060	1.8080	2.3884	3.2987	0.9907	3.8041	2.8399		2.8018
H10	1.9060	2.8133	2.3884	1.8080	0.9907	3.2987	2.8399	3.8041	2.8018

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	O3	H9	134.924	C1	O5	H10	109.470
C2	O4	H10	134.924	C2	O6	H9	109.470
O3	C1	O5	126.243	O3	C1	H7	122.789
O3	H9	O6	169.364	O4	C2	O6	126.243
O4	C2	H8	122.789	O4	H10	O5	169.364
O5	C1	H7	110.968	O6	C2	H8	110.968

All results from a given calculation for C₂H₄O₄ (Formic acid dimer)

using model chemistry: MP2/CEP-121G*

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 C2H4O4 (Formic acid dimer)

using model chemistry: MP2/CEP-121G*

States and conformations

All results from a given calculation for C₂H₄O₄ (Formic acid dimer)