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	hartrees
Energy at 0K	-277.688648
Energy at 298.15K
HF Energy	-277.013612
Nuclear repulsion energy	127.330272

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)	Raman Act (Å⁴/u)	Dep P	Dep U
1	A	3144	3025	10.40	80.31	0.75	0.85
2	A	3076	2959	35.13	235.84	0.02	0.03
3	A	1477	1421	2.02	1.17	0.75	0.86
4	A	1435	1381	11.90	1.43	0.17	0.29
5	A	1298	1249	1.96	8.82	0.63	0.77
6	A	1140	1096	37.83	2.39	0.73	0.84
7	A	1116	1074	45.93	3.38	0.16	0.27
8	A	883	849	29.53	7.12	0.12	0.21
9	A	326	313	0.40	0.36	0.25	0.40
10	A	157	151	3.67	0.12	0.75	0.85
11	B	3157	3037	22.86	13.93	0.75	0.86
12	B	3069	2953	9.10	28.77	0.75	0.86
13	B	1472	1416	6.90	6.60	0.75	0.86
14	B	1386	1333	8.34	0.03	0.75	0.86
15	B	1254	1207	6.43	2.30	0.75	0.86
16	B	1082	1041	51.53	3.71	0.75	0.86
17	B	904	869	43.85	2.46	0.75	0.86
18	B	496	477	16.04	0.42	0.75	0.86

Atom	x (Å)	y (Å)	z (Å)
C1	0.270	0.702	0.516
C2	-0.270	-0.702	0.516
F3	-0.270	1.419	-0.551
F4	0.270	-1.419	-0.551
H5	-0.012	1.212	1.454
H6	1.367	0.695	0.405
H7	0.012	-1.212	1.454
H8	-1.367	-0.695	0.405

	C1	C2	F3	F4	H5	H6	H7	H8
C1		1.5043	1.3941	2.3746	1.1038	1.1028	2.1469	2.1547
C2	1.5043		2.3746	1.3941	2.1469	2.1547	1.1038	1.1028
F3	1.3941	2.3746		2.8890	2.0323	2.0288	3.3197	2.5670
F4	2.3746	1.3941	2.8890		3.3197	2.5670	2.0323	2.0288
H5	1.1038	2.1469	2.0323	3.3197		1.8073	2.4234	2.5638
H6	1.1028	2.1547	2.0288	2.5670	1.8073		2.5638	3.0669
H7	2.1469	1.1038	3.3197	2.0323	2.4234	2.5638		1.8073
H8	2.1547	1.1028	2.5670	2.0288	2.5638	3.0669	1.8073

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	F4	109.967	C1	C2	H7	109.853
C1	C2	H8	110.540	C2	C1	F3	109.967
C2	C1	H5	109.853	C2	C1	H6	110.540
F3	C1	H5	108.336	F3	C1	H6	108.121
F4	C2	H7	108.336	F4	C2	H8	108.121
H5	C1	H6	109.977	H7	C2	H8	109.977

All results from a given calculation for C₂H₄F₂ (1,2-difluoroethane)

using model chemistry: MP2/Sadlej_pVTZ

States and conformations

Conformer 1 (C2H anti)

Conformer 2 (C2 gauche)

	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 C2H4F2 (1,2-difluoroethane)

using model chemistry: MP2/Sadlej_pVTZ

States and conformations

Conformer 1 (C2H anti)

Conformer 2 (C2 gauche)

All results from a given calculation for C₂H₄F₂ (1,2-difluoroethane)