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	hartrees
Energy at 0K	-378.842855
Energy at 298.15K	-378.848701
HF Energy	-377.657975
Counterpoise corrected energy	-378.842855
CP Energy at 298.15K	-378.848701
Counterpoise optimized geometry corrected energy
CP opt. Energy at 298.15K
Nuclear repulsion energy	235.047194

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A_g	3337	3165	0.00
2	A_g	3144	2982	0.00
3	A_g	1760	1670	0.00
4	A_g	1503	1426	0.00
5	A_g	1427	1353	0.00
6	A_g	1269	1204	0.00
7	A_g	688	653	0.00
8	A_g	196	186	0.00
9	A_g	165	156	0.00
10	A_u	1122	1064	61.30
11	A_u	989	938	186.99
12	A_u	179	169	6.80
13	A_u	70	66	1.82
14	B_g	1099	1043	0.00
15	B_g	963	913	0.00
16	B_g	266	253	0.00
17	B_u	3431	3255	1924.96
18	B_u	3140	2978	224.45
19	B_u	1818	1725	708.31
20	B_u	1477	1401	0.39
21	B_u	1423	1350	31.45
22	B_u	1274	1208	359.55
23	B_u	712	675	50.19
24	B_u	257	243	55.57

Atom	x (Å)	y (Å)
C1	1.624	-1.006
C2	-1.624	1.006
O3	1.624	0.213
O4	-1.624	-0.213
O5	0.568	-1.791
O6	-0.568	1.791
H7	2.550	-1.591
H8	-2.550	1.591
H9	0.244	1.228
H10	-0.244	-1.228

	C1	C2	O3	O4	O5	O6	H7	H8	H9	H10
C1		3.8208	1.2189	3.3434	1.3152	3.5537	1.0954	4.9161	2.6254	1.8814
C2	3.8208		3.3434	1.2189	3.5537	1.3152	4.9161	1.0954	1.8814	2.6254
O3	1.2189	3.3434		3.2755	2.2645	2.7011	2.0275	4.3958	1.7126	2.3590
O4	3.3434	1.2189	3.2755		2.7011	2.2645	4.3958	2.0275	2.3590	1.7126
O5	1.3152	3.5537	2.2645	2.7011		3.7574	1.9921	4.6000	3.0356	0.9887
O6	3.5537	1.3152	2.7011	2.2645	3.7574		4.6000	1.9921	0.9887	3.0356
H7	1.0954	4.9161	2.0275	4.3958	1.9921	4.6000		6.0115	3.6415	2.8182
H8	4.9161	1.0954	4.3958	2.0275	4.6000	1.9921	6.0115		2.8182	3.6415
H9	2.6254	1.8814	1.7126	2.3590	3.0356	0.9887	3.6415	2.8182		2.5034
H10	1.8814	2.6254	2.3590	1.7126	0.9887	3.0356	2.8182	3.6415	2.5034

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	O3	H9	126.343	C1	O5	H10	108.665
C2	O4	H10	126.343	C2	O6	H9	108.665
O3	C1	O5	126.616	O3	C1	H7	122.251
O3	H9	O6	178.376	O4	C2	O6	126.616
O4	C2	H8	122.251	O4	H10	O5	178.376
O5	C1	H7	111.133	O6	C2	H8	111.133

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

using model chemistry: MP2=FULL/6-311G**

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=FULL/6-311G**

States and conformations

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