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	hartrees
Energy at 0K	-77.094082
Energy at 298.15K	-77.094198
HF Energy	-76.824339
Nuclear repulsion energy	24.471688

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	3554	3369	0.00
2	Σ_g	2080	1972	0.00
3	Σ_u	3457	3277	91.61
4	Π_g	606	574	0.00
4	Π_g	606	574	0.00
5	Π_u	772	732	80.84
5	Π_u	772	732	80.84

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	1.685
H4	0.000	0.000	-1.685

	C1	C2	H3	H4
C1		1.2179	1.0756	2.2935
C2	1.2179		2.2935	1.0756
H3	1.0756	2.2935		3.3690
H4	2.2935	1.0756	3.3690

All results from a given calculation for C₂H₂ (Acetylene)

using model chemistry: MP3/cc-pVDZ

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/cc-pVDZ

States and conformations

All results from a given calculation for C₂H₂ (Acetylene)