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	hartrees
Energy at 0K	-77.178877
Energy at 298.15K	-77.178887
HF Energy	-76.838509
Nuclear repulsion energy	24.551349

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	Σ_g	3529	3393
2	Σ_g	1957	1882
3	Σ_u	3437	3305
4	Π_g	532	511
4	Π_g	531	511
5	Π_u	758	729
5	Π_u	758	729

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.608
C2	0.000	0.000	-0.608
H3	0.000	0.000	1.675
H4	0.000	0.000	-1.675

	C1	C2	H3	H4
C1		1.2169	1.0664	2.2833
C2	1.2169		2.2833	1.0664
H3	1.0664	2.2833		3.3498
H4	2.2833	1.0664	3.3498

All results from a given calculation for C₂H₂ (Acetylene)

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

using model chemistry: MP4=FULL/6-311G**

States and conformations

All results from a given calculation for C₂H₂ (Acetylene)