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	hartrees
Energy at 0K	-350.534618
Energy at 298.15K
HF Energy	-350.022023
Nuclear repulsion energy	163.217442

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2585	2424	0.00
2	Σ_g	1401	1314	0.00
3	Σ_g	553	518	0.00
4	Σ_u	2434	2283	149.35
5	Σ_u	1039	974	170.65
6	Π_g	283	265	0.00
6	Π_g	283	265	0.00
7	Π_g	546i	512i	0.00
7	Π_g	546i	512i	0.00
8	Π_u	260	244	4.45
8	Π_u	260	244	4.45
9	Π_u	45	43	0.00
9	Π_u	45	43	0.00

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.693
C2	0.000	0.000	-0.693
C3	0.000	0.000	1.895
C4	0.000	0.000	-1.895
F5	0.000	0.000	3.223
F6	0.000	0.000	-3.223

	C1	C2	C3	C4	F5	F6
C1		1.3865	1.2021	2.5886	2.5299	3.9165
C2	1.3865		2.5886	1.2021	3.9165	2.5299
C3	1.2021	2.5886		3.7908	1.3278	5.1186
C4	2.5886	1.2021	3.7908		5.1186	1.3278
F5	2.5299	3.9165	1.3278	5.1186		6.4464
F6	3.9165	2.5299	5.1186	1.3278	6.4464

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: CISD/6-31G

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: CISD/6-31G

States and conformations

All results from a given calculation for C₄F₂ (difluorobutadiyne)