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	hartrees
Energy at 0K	-379.093827
Energy at 298.15K	-379.099736
HF Energy	-377.730448
Counterpoise corrected energy
CP Energy at 298.15K
Counterpoise optimized geometry corrected energy
CP opt. Energy at 298.15K
Nuclear repulsion energy	236.498384

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A_g	3147	2984	0.00
2	A_g	3131	2969	0.00
3	A_g	1716	1627	0.00
4	A_g	1486	1409	0.00
5	A_g	1417	1344	0.00
6	A_g	1267	1201	0.00
7	A_g	689	654	0.00
8	A_g	212	201	0.00
9	A_g	170	161	0.00
10	A_u	1118	1060	60.11
11	A_u	999	947	127.56
12	A_u	179	170	9.28
13	A_u	70	67	2.06
14	B_g	1094	1038	0.00
15	B_g	978	928	0.00
16	B_g	262	249	0.00
17	B_u	3253	3086	2164.06
18	B_u	3135	2973	406.57
19	B_u	1784	1692	731.85
20	B_u	1458	1383	2.88
21	B_u	1411	1338	36.26
22	B_u	1270	1205	335.95
23	B_u	720	683	40.41
24	B_u	282	267	68.58

Atom	x (Å)	y (Å)
C1	1.575	-1.122
C2	-1.575	1.122
O3	1.575	0.089
O4	-1.575	-0.089
O5	0.513	-1.896
O6	-0.513	1.896
H7	2.493	-1.714
H8	-2.493	1.714
H9	0.293	1.337
H10	-0.293	-1.337

	C1	C2	O3	O4	O5	O6	H7	H8	H9	H10
C1		3.8673	1.2109	3.3145	1.3139	3.6699	1.0926	4.9590	2.7728	1.8798
C2	3.8673		3.3145	1.2109	3.6699	1.3139	4.9590	1.0926	1.8798	2.7728
O3	1.2109	3.3145		3.1542	2.2509	2.7612	2.0234	4.3804	1.7888	2.3493
O4	3.3145	1.2109	3.1542		2.7612	2.2509	4.3804	2.0234	2.3493	1.7888
O5	1.3139	3.6699	2.2509	2.7612		3.9285	1.9885	4.6979	3.2402	0.9810
O6	3.6699	1.3139	2.7612	2.2509	3.9285		4.6979	1.9885	0.9810	3.2402
H7	1.0926	4.9590	2.0234	4.3804	1.9885	4.6979		6.0510	3.7614	2.8114
H8	4.9590	1.0926	4.3804	2.0234	4.6979	1.9885	6.0510		2.8114	3.7614
H9	2.7728	1.8798	1.7888	2.3493	3.2402	0.9810	3.7614	2.8114		2.7367
H10	1.8798	2.7728	2.3493	1.7888	0.9810	3.2402	2.8114	3.7614	2.7367

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	O3	H9	134.237	C1	O5	H10	109.141
C2	O4	H10	134.237	C2	O6	H9	109.141
O3	C1	O5	126.084	O3	C1	H7	122.810
O3	H9	O6	170.538	O4	C2	O6	126.084
O4	C2	H8	122.810	O4	H10	O5	170.538
O5	C1	H7	111.106	O6	C2	H8	111.106

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

using model chemistry: MP2/cc-pVQZ

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/cc-pVQZ

States and conformations

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