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	hartrees
Energy at 0K	-77.126053
Energy at 298.15K	-77.126148
HF Energy	-76.839572
Nuclear repulsion energy	24.669464

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	3536	3536	0.00
2	Σ_g	2032	2032	0.00
3	Σ_u	3437	3437	79.89
4	Π_g	584	584	0.00
4	Π_g	584	584	0.00
5	Π_u	778	778	88.02
5	Π_u	778	778	88.02

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.604
C2	0.000	0.000	-0.604
H3	0.000	0.000	1.670
H4	0.000	0.000	-1.670

	C1	C2	H3	H4
C1		1.2086	1.0661	2.2747
C2	1.2086		2.2747	1.0661
H3	1.0661	2.2747		3.3408
H4	2.2747	1.0661	3.3408

All results from a given calculation for C₂H₂ (Acetylene)

using model chemistry: CCSD/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: CCSD/6-311G**

States and conformations

All results from a given calculation for C₂H₂ (Acetylene)