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	hartrees
Energy at 0K	-77.098412
Energy at 298.15K	-77.098308
Nuclear repulsion energy	24.619116

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	3571	3361	0.00
2	Σ_g	2053	1932	0.00
3	Σ_u	3476	3272	73.01
4	Π_g	466	438	0.00
4	Π_g	466	438	0.00
5	Π_u	753	709	79.85
5	Π_u	753	709	79.85

All results from a given calculation for C₂H₂ (Acetylene)

using model chemistry: QCISD/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: QCISD/6-31G**

States and conformations

All results from a given calculation for C₂H₂ (Acetylene)