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	hartrees
Energy at 0K	-12.199495
Energy at 298.15K	-12.199603
HF Energy	-12.009793
Nuclear repulsion energy	12.518686

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	Σ_g	3459	3264
2	Σ_g	1891	1785
3	Σ_u	3348	3160
4	Π_g	609	575
4	Π_g	609	575
5	Π_u	770	727
5	Π_u	770	727

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.637
C2	0.000	0.000	-0.637
H3	0.000	0.000	1.718
H4	0.000	0.000	-1.718

	C1	C2	H3	H4
C1		1.2734	1.0816	2.3550
C2	1.2734		2.3550	1.0816
H3	1.0816	2.3550		3.4366
H4	2.3550	1.0816	3.4366

All results from a given calculation for C₂H₂ (Acetylene)

using model chemistry: MP4/CEP-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 C2H2 (Acetylene)

using model chemistry: MP4/CEP-31G

States and conformations

All results from a given calculation for C₂H₂ (Acetylene)