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	hartrees
Energy at 0K	-77.097740
Energy at 298.15K	-77.097702
HF Energy	-76.826268
Nuclear repulsion energy	24.687077

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	3602	3351	0.00
2	Σ_g	2100	1954	0.00
3	Σ_u	3504	3260	83.42
4	Π_g	500	465	0.00
4	Π_g	500	465	0.00
5	Π_u	763	710	114.61
5	Π_u	763	710	114.61

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.605
C2	0.000	0.000	-0.605
H3	0.000	0.000	1.667
H4	0.000	0.000	-1.667

	C1	C2	H3	H4
C1		1.2091	1.0623	2.2715
C2	1.2091		2.2715	1.0623
H3	1.0623	2.2715		3.3338
H4	2.2715	1.0623	3.3338

All results from a given calculation for C₂H₂ (Acetylene)

using model chemistry: MP3/6-31+G**

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: MP3/6-31+G**

States and conformations

All results from a given calculation for C₂H₂ (Acetylene)