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	hartrees
Energy at 0K	-277.589207
Energy at 298.15K
HF Energy	-276.939451
Nuclear repulsion energy	125.348111

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	A_g	3112	3112
2	A_g	1523	1523
3	A_g	1472	1472
4	A_g	1126	1126
5	A_g	1096	1096
6	A_g	464	464
7	A_u	3195	3195
8	A_u	1242	1242
9	A_u	821	821
10	A_u	128	128
11	B_g	3171	3171
12	B_g	1307	1307
13	B_g	1189	1189
14	B_u	3115	3115
15	B_u	1532	1532
16	B_u	1365	1365
17	B_u	1112	1112
18	B_u	274	274

Atom	x (Å)	y (Å)	z (Å)
C1	0.425	0.629	0.000
C2	-0.425	-0.629	0.000
F3	-0.425	1.727	0.000
F4	0.425	-1.727	0.000
H5	1.063	0.662	0.898
H6	1.063	0.662	-0.898
H7	-1.063	-0.662	0.898
H8	-1.063	-0.662	-0.898

	C1	C2	F3	F4	H5	H6	H7	H8
C1		1.5183	1.3882	2.3567	1.1022	1.1022	2.1651	2.1651
C2	1.5183		2.3567	1.3882	2.1651	2.1651	1.1022	1.1022
F3	1.3882	2.3567		3.5576	2.0379	2.0379	2.6316	2.6316
F4	2.3567	1.3882	3.5576		2.6316	2.6316	2.0379	2.0379
H5	1.1022	2.1651	2.0379	2.6316		1.7958	2.5050	3.0822
H6	1.1022	2.1651	2.0379	2.6316	1.7958		3.0822	2.5050
H7	2.1651	1.1022	2.6316	2.0379	2.5050	3.0822		1.7958
H8	2.1651	1.1022	2.6316	2.0379	3.0822	2.5050	1.7958

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	F4	108.273	C1	C2	H7	110.421
C1	C2	H8	110.421	C2	C1	F3	108.273
C2	C1	H5	110.421	C2	C1	H6	110.421
F3	C1	H5	109.298	F3	C1	H6	109.298
F4	C2	H7	109.298	F4	C2	H8	109.298
H5	C1	H6	109.108	H7	C2	H8	109.108

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

using model chemistry: ROMP2/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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Number	Element	Mulliken
1	C	0.259
2	C	0.259
3	F	-0.353
4	F	-0.353
5	H	0.047
6	H	0.047
7	H	0.047
8	H	0.047

<r²>	88.576
(<r²>)^1/2	9.411

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

using model chemistry: ROMP2/cc-pVDZ

States and conformations

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