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	hartrees
Energy at 0K	-277.803335
Energy at 298.15K
HF Energy	-277.013183
Nuclear repulsion energy	127.132755

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	A	3089	3089
2	A	3030	3030
3	A	1464	1464
4	A	1424	1424
5	A	1282	1282
6	A	1126	1126
7	A	1107	1107
8	A	874	874
9	A	322	322
10	A	152	152
11	B	3102	3102
12	B	3021	3021
13	B	1458	1458
14	B	1374	1374
15	B	1242	1242
16	B	1074	1074
17	B	897	897
18	B	491	491

Atom	x (Å)	y (Å)	z (Å)
C1	0.271	0.705	0.517
C2	-0.271	-0.705	0.517
F3	-0.271	1.420	-0.551
F4	0.271	-1.420	-0.551
H5	-0.011	1.217	1.458
H6	1.371	0.698	0.405
H7	0.011	-1.217	1.458
H8	-1.371	-0.698	0.405

	C1	C2	F3	F4	H5	H6	H7	H8
C1		1.5098	1.3946	2.3780	1.1074	1.1064	2.1549	2.1622
C2	1.5098		2.3780	1.3946	2.1549	2.1622	1.1074	1.1064
F3	1.3946	2.3780		2.8908	2.0357	2.0325	3.3265	2.5709
F4	2.3780	1.3946	2.8908		3.3265	2.5709	2.0357	2.0325
H5	1.1074	2.1549	2.0357	3.3265		1.8136	2.4331	2.5734
H6	1.1064	2.1622	2.0325	2.5709	1.8136		2.5734	3.0771
H7	2.1549	1.1074	3.3265	2.0357	2.4331	2.5734		1.8136
H8	2.1622	1.1064	2.5709	2.0325	2.5734	3.0771	1.8136

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	F4	109.855	C1	C2	H7	109.889
C1	C2	H8	110.521	C2	C1	F3	109.855
C2	C1	H5	109.889	C2	C1	H6	110.521
F3	C1	H5	108.358	F3	C1	H6	108.164
F4	C2	H7	108.358	F4	C2	H8	108.164
H5	C1	H6	110.007	H7	C2	H8	110.007

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

using model chemistry: QCISD(T)=FULL/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: QCISD(T)=FULL/Sadlej_pVTZ

States and conformations

Conformer 1 (C2H anti)

Conformer 2 (C2 gauche)

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