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	hartrees
Energy at 0K	-351.028599
Energy at 298.15K
HF Energy	-350.161364
Nuclear repulsion energy	164.287997

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2512	2403	0.00
2	Σ_g	1429	1367	0.00
3	Σ_g	555	531	0.00
4	Σ_u	2389	2285	318.21
5	Σ_u	1083	1036	292.75
6	Π_g	468	448	0.00
6	Π_g	468	448	0.00
7	Π_g	323	309	0.00
7	Π_g	323	309	0.00
8	Π_u	393	376	3.89
8	Π_u	393	376	3.89
9	Π_u	111	106	0.28
9	Π_u	111	106	0.28

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.699
C2	0.000	0.000	-0.699
C3	0.000	0.000	1.913
C4	0.000	0.000	-1.913
F5	0.000	0.000	3.202
F6	0.000	0.000	-3.202

	C1	C2	C3	C4	F5	F6
C1		1.3976	1.2142	2.6118	2.5027	3.9003
C2	1.3976		2.6118	1.2142	3.9003	2.5027
C3	1.2142	2.6118		3.8259	1.2886	5.1145
C4	2.6118	1.2142	3.8259		5.1145	1.2886
F5	2.5027	3.9003	1.2886	5.1145		6.4031
F6	3.9003	2.5027	5.1145	1.2886	6.4031

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: CCD/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 C4F2 (difluorobutadiyne)

using model chemistry: CCD/cc-pVDZ

States and conformations

All results from a given calculation for C₄F₂ (difluorobutadiyne)