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	hartrees
Energy at 0K	-351.480082
Energy at 298.15K
HF Energy	-350.275831
Nuclear repulsion energy	166.310337

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)	Raman Act (Å⁴/u)	Dep P	Dep U
1	Σ_g	2431	2313	0.00	527.91	0.22	0.36
2	Σ_g	1452	1381	0.00	45.79	0.44	0.61
3	Σ_g	558	531	0.00	7.13	0.11	0.19
4	Σ_u	2317	2204	397.53	0.00	0.14	0.25
5	Σ_u	1086	1033	300.28	0.00	0.00	0.00
6	Π_g	451	429	0.00	14.74	0.75	0.86
6	Π_g	451	429	0.00	14.74	0.75	0.86
7	Π_g	298	283	0.00	8.73	0.75	0.86
7	Π_g	298	283	0.00	8.73	0.75	0.86
8	Π_u	360	342	0.67	0.00	0.00	0.00
8	Π_u	360	342	0.67	0.00	0.00	0.00
9	Π_u	114	109	0.41	0.00	0.00	0.00
9	Π_u	114	109	0.41	0.00	0.00	0.00

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.681
C2	0.000	0.000	-0.681
C3	0.000	0.000	1.887
C4	0.000	0.000	-1.887
F5	0.000	0.000	3.162
F6	0.000	0.000	-3.162

	C1	C2	C3	C4	F5	F6
C1		1.3624	1.2061	2.5685	2.4805	3.8429
C2	1.3624		2.5685	1.2061	3.8429	2.4805
C3	1.2061	2.5685		3.7746	1.2744	5.0490
C4	2.5685	1.2061	3.7746		5.0490	1.2744
F5	2.4805	3.8429	1.2744	5.0490		6.3234
F6	3.8429	2.4805	5.0490	1.2744	6.3234

atom1	atom2	atom3	angle		atom1	atom2	atom3	angle
C1	C2	C4	180.000		C1	C3	F5	180.000
C2	C1	C3	180.000		C2	C4	F6	180.000

All results from a given calculation for C₄F₂ (difluorobutadiyne)

using model chemistry: MP2=FULL/aug-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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All results from a given calculation for C4F2 (difluorobutadiyne)

using model chemistry: MP2=FULL/aug-cc-pVTZ

States and conformations

All results from a given calculation for C₄F₂ (difluorobutadiyne)