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	hartrees
Energy at 0K	-277.877386
Energy at 298.15K
HF Energy	-277.034526
Nuclear repulsion energy	126.039684

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	A_g	3109	3109
2	A_g	1538	1538
3	A_g	1472	1472
4	A_g	1122	1122
5	A_g	1096	1096
6	A_g	466	466
7	A_u	3191	3191
8	A_u	1257	1257
9	A_u	822	822
10	A_u	123	123
11	B_g	3167	3167
12	B_g	1322	1322
13	B_g	1195	1195
14	B_u	3116	3116
15	B_u	1549	1549
16	B_u	1380	1380
17	B_u	1109	1109
18	B_u	278	278

Atom	x (Å)	y (Å)	z (Å)
C1	0.424	0.625	0.000
C2	-0.424	-0.625	0.000
F3	-0.424	1.720	0.000
F4	0.424	-1.720	0.000
H5	1.050	0.665	0.888
H6	1.050	0.665	-0.888
H7	-1.050	-0.665	0.888
H8	-1.050	-0.665	-0.888

	C1	C2	F3	F4	H5	H6	H7	H8
C1		1.5107	1.3838	2.3450	1.0878	1.0878	2.1509	2.1509
C2	1.5107		2.3450	1.3838	2.1509	2.1509	1.0878	1.0878
F3	1.3838	2.3450		3.5420	2.0181	2.0181	2.6208	2.6208
F4	2.3450	1.3838	3.5420		2.6208	2.6208	2.0181	2.0181
H5	1.0878	2.1509	2.0181	2.6208		1.7767	2.4860	3.0557
H6	1.0878	2.1509	2.0181	2.6208	1.7767		3.0557	2.4860
H7	2.1509	1.0878	2.6208	2.0181	2.4860	3.0557		1.7767
H8	2.1509	1.0878	2.6208	2.0181	3.0557	2.4860	1.7767

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	F4	108.144	C1	C2	H7	110.683
C1	C2	H8	110.683	C2	C1	F3	108.144
C2	C1	H5	110.683	C2	C1	H6	110.683
F3	C1	H5	108.890	F3	C1	H6	108.890
F4	C2	H7	108.890	F4	C2	H8	108.890
H5	C1	H6	109.502	H7	C2	H8	109.502

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

using model chemistry: ROMP2/cc-pVTZ

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	0.166
2	C	0.166
3	F	-0.308
4	F	-0.308
5	H	0.071
6	H	0.071
7	H	0.071
8	H	0.071

<r²>	87.812
(<r²>)^1/2	9.371

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

using model chemistry: ROMP2/cc-pVTZ

States and conformations

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