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	hartrees
Energy at 0K	-277.707492
Energy at 298.15K
HF Energy	-276.964588
Nuclear repulsion energy	124.686906

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A_g	3089	3089	0.00
2	A_g	1513	1513	0.00
3	A_g	1450	1450	0.00
4	A_g	1116	1116	0.00
5	A_g	1060	1060	0.00
6	A_g	457	457	0.00
7	A_u	3165	3165	39.88
8	A_u	1233	1233	4.81
9	A_u	811	811	0.02
10	A_u	122	122	14.05
11	B_g	3143	3143	0.00
12	B_g	1294	1294	0.00
13	B_g	1173	1173	0.00
14	B_u	3093	3093	51.04
15	B_u	1519	1519	3.08
16	B_u	1352	1352	8.86
17	B_u	1071	1071	214.43
18	B_u	280	280	20.67

Atom	x (Å)	y (Å)	z (Å)
C1	0.430	0.628	0.000
C2	-0.430	-0.628	0.000
F3	-0.430	1.736	0.000
F4	0.430	-1.736	0.000
H5	1.059	0.679	0.901
H6	1.059	0.679	-0.901
H7	-1.059	-0.679	0.901
H8	-1.059	-0.679	-0.901

	C1	C2	F3	F4	H5	H6	H7	H8
C1		1.5221	1.4026	2.3639	1.1001	1.1001	2.1765	2.1765
C2	1.5221		2.3639	1.4026	2.1765	2.1765	1.1001	1.1001
F3	1.4026	2.3639		3.5769	2.0361	2.0361	2.6534	2.6534
F4	2.3639	1.4026	3.5769		2.6534	2.6534	2.0361	2.0361
H5	1.1001	2.1765	2.0361	2.6534		1.8026	2.5157	3.0949
H6	1.1001	2.1765	2.0361	2.6534	1.8026		3.0949	2.5157
H7	2.1765	1.1001	2.6534	2.0361	2.5157	3.0949		1.8026
H8	2.1765	1.1001	2.6534	2.0361	3.0949	2.5157	1.8026

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	F4	107.780	C1	C2	H7	111.184
C1	C2	H8	111.184	C2	C1	F3	107.780
C2	C1	H5	111.184	C2	C1	H6	111.184
F3	C1	H5	108.277	F3	C1	H6	108.277
F4	C2	H7	108.277	F4	C2	H8	108.277
H5	C1	H6	110.023	H7	C2	H8	110.023

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

using model chemistry: CCSD=FULL/daug-cc-pVDZ

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 C2H4F2 (1,2-difluoroethane)

using model chemistry: CCSD=FULL/daug-cc-pVDZ

States and conformations

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