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	hartrees
Energy at 0K	-276.486010
Energy at 298.15K	-276.488313
HF Energy	-275.740407
Nuclear repulsion energy	111.385500

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A_g	3288	3105	0.00
2	A_g	1777	1679	0.00
3	A_g	1317	1244	0.00
4	A_g	1187	1121	0.00
5	A_g	563	532	0.00
6	A_u	944	891	50.74
7	A_u	352	333	4.96
8	B_g	830	784	0.00
9	B_u	3281	3099	11.65
10	B_u	1324	1250	43.16
11	B_u	1225	1157	227.43
12	B_u	309	292	11.28

Atom	x (Å)	y (Å)
C1	-0.330	0.575
C2	0.330	-0.575
F3	0.330	1.735
F4	-0.330	-1.735
H5	-1.407	0.664
H6	1.407	-0.664

	C1	C2	F3	F4	H5	H6
C1		1.3268	1.3340	2.3101	1.0811	2.1345
C2	1.3268		2.3101	1.3340	2.1345	1.0811
F3	1.3340	2.3101		3.5316	2.0408	2.6297
F4	2.3101	1.3340	3.5316		2.6297	2.0408
H5	1.0811	2.1345	2.0408	2.6297		3.1127
H6	2.1345	1.0811	2.6297	2.0408	3.1127

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	F4	120.502	C1	C2	H6	124.548
C2	C1	F3	120.502	C2	C1	H5	124.548
F3	C1	H5	114.950	F4	C2	H6	114.950

All results from a given calculation for C₂H₂F₂ (Ethene, 1,2-difluoro-, (E)-)

using model chemistry: MP2/6-31G(2df,p)

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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HF vs MP2 Bad vib. Calc. vs exp. 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All results from a given calculation for C2H2F2 (Ethene, 1,2-difluoro-, (E)-)

using model chemistry: MP2/6-31G(2df,p)

States and conformations

All results from a given calculation for C₂H₂F₂ (Ethene, 1,2-difluoro-, (E)-)