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	hartrees
Energy at 0K	-77.102984
Energy at 298.15K	-77.102608
HF Energy	-76.815215
Nuclear repulsion energy	24.512389

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	Σ_g	3531	3395
2	Σ_g	1994	1917
3	Σ_u	3439	3307
4	Π_g	337	324
4	Π_g	337	324
5	Π_u	733	705
5	Π_u	733	705

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.609
C2	0.000	0.000	-0.609
H3	0.000	0.000	1.678
H4	0.000	0.000	-1.678

	C1	C2	H3	H4
C1		1.2183	1.0691	2.2874
C2	1.2183		2.2874	1.0691
H3	1.0691	2.2874		3.3565
H4	2.2874	1.0691	3.3565

All results from a given calculation for C₂H₂ (Acetylene)

using model chemistry: MP4=FULL/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 C2H2 (Acetylene)

using model chemistry: MP4=FULL/6-31G*

States and conformations

All results from a given calculation for C₂H₂ (Acetylene)