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	hartrees
Energy at 0K	-275.431899
Energy at 298.15K
HF Energy	-275.431899
Nuclear repulsion energy	124.995794

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A_g	2961	2908	0.00
2	A_g	1521	1493	0.00
3	A_g	1428	1403	0.00
4	A_g	1090	1070	0.00
5	A_g	1068	1049	0.00
6	A_g	438	430	0.00
7	A_u	3026	2971	66.90
8	A_u	1195	1174	0.00
9	A_u	842	827	0.41
10	A_u	114	112	11.29
11	B_g	2995	2941	0.00
12	B_g	1307	1284	0.00
13	B_g	1158	1137	0.00
14	B_u	2974	2920	57.40
15	B_u	1537	1509	3.17
16	B_u	1354	1329	7.98
17	B_u	1128	1108	94.38
18	B_u	211	207	16.88

Atom	x (Å)	y (Å)	z (Å)
C1	0.427	0.622	0.000
C2	-0.427	-0.622	0.000
F3	-0.427	1.732	0.000
F4	0.427	-1.732	0.000
H5	1.078	0.614	0.895
H6	1.078	0.614	-0.895
H7	-1.078	-0.614	0.895
H8	-1.078	-0.614	-0.895

	C1	C2	F3	F4	H5	H6	H7	H8
C1		1.5093	1.4002	2.3543	1.1072	1.1072	2.1440	2.1440
C2	1.5093		2.3543	1.4002	2.1440	2.1440	1.1072	1.1072
F3	1.4002	2.3543		3.5678	2.0777	2.0777	2.5944	2.5944
F4	2.3543	1.4002	3.5678		2.5944	2.5944	2.0777	2.0777
H5	1.1072	2.1440	2.0777	2.5944		1.7904	2.4822	3.0605
H6	1.1072	2.1440	2.0777	2.5944	1.7904		3.0605	2.4822
H7	2.1440	1.1072	2.5944	2.0777	2.4822	3.0605		1.7904
H8	2.1440	1.1072	2.5944	2.0777	3.0605	2.4822	1.7904

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	F4	107.971	C1	C2	H7	109.084
C1	C2	H8	109.084	C2	C1	F3	107.971
C2	C1	H5	109.084	C2	C1	H6	109.084
F3	C1	H5	111.379	F3	C1	H6	111.379
F4	C2	H7	111.379	F4	C2	H8	111.379
H5	C1	H6	107.904	H7	C2	H8	107.904

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

using model chemistry: LSDA/3-21G*

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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Number	Element	Mulliken
1	C	-0.188
2	C	-0.188
3	F	-0.254
4	F	-0.254
5	H	0.221
6	H	0.221
7	H	0.221
8	H	0.221

	x	y	z
x	3.343	-0.070	0.000
y	-0.070	3.160	0.000
z	0.000	0.000	3.126

<r²>	88.319
(<r²>)^1/2	9.398

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

using model chemistry: LSDA/3-21G*

States and conformations

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