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	hartrees
Energy at 0K	-351.475803
Energy at 298.15K
HF Energy	-350.292334
Nuclear repulsion energy	166.767946

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2551	2551	0.00
2	Σ_g	1460	1460	0.00
3	Σ_g	566	566	0.00
4	Σ_u	2433	2433	378.09
5	Σ_u	1117	1117	314.53
6	Π_g	467	467	0.00
6	Π_g	467	467	0.00
7	Π_g	323	323	0.00
7	Π_g	323	323	0.00
8	Π_u	406	406	2.06
8	Π_u	406	406	2.06
9	Π_u	117	117	0.35
9	Π_u	117	117	0.35

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.690
C2	0.000	0.000	-0.690
C3	0.000	0.000	1.883
C4	0.000	0.000	-1.883
F5	0.000	0.000	3.154
F6	0.000	0.000	-3.154

	C1	C2	C3	C4	F5	F6
C1		1.3794	1.1929	2.5722	2.4645	3.8438
C2	1.3794		2.5722	1.1929	3.8438	2.4645
C3	1.1929	2.5722		3.7651	1.2716	5.0367
C4	2.5722	1.1929	3.7651		5.0367	1.2716
F5	2.4645	3.8438	1.2716	5.0367		6.3083
F6	3.8438	2.4645	5.0367	1.2716	6.3083

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: MP3=FULL/Def2TZVPP

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: MP3=FULL/Def2TZVPP

States and conformations

All results from a given calculation for C₄F₂ (difluorobutadiyne)