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	hartrees
Energy at 0K	-351.156979
Energy at 298.15K
HF Energy	-350.231364
Nuclear repulsion energy	165.639325

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2515	2515	0.00
2	Σ_g	1437	1437	0.00
3	Σ_g	552	552	0.00
4	Σ_u	2386	2386	346.13
5	Σ_u	1088	1088	292.01
6	Π_g	330	330	0.00
6	Π_g	330	330	0.00
7	Π_g	258	258	0.00
7	Π_g	258	258	0.00
8	Π_u	381	381	4.00
8	Π_u	381	381	4.00
9	Π_u	108	108	0.36
9	Π_u	108	108	0.36

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.694
C2	0.000	0.000	-0.694
C3	0.000	0.000	1.896
C4	0.000	0.000	-1.896
F5	0.000	0.000	3.176
F6	0.000	0.000	-3.176

	C1	C2	C3	C4	F5	F6
C1		1.3872	1.2028	2.5900	2.4819	3.8691
C2	1.3872		2.5900	1.2028	3.8691	2.4819
C3	1.2028	2.5900		3.7928	1.2791	5.0719
C4	2.5900	1.2028	3.7928		5.0719	1.2791
F5	2.4819	3.8691	1.2791	5.0719		6.3510
F6	3.8691	2.4819	5.0719	1.2791	6.3510

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: CCSD/6-311G**

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: CCSD/6-311G**

States and conformations

All results from a given calculation for C₄F₂ (difluorobutadiyne)