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	hartrees
Energy at 0K	-76.995963
Energy at 298.15K	-76.996020
HF Energy	-76.794542
Nuclear repulsion energy	24.112780

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	Σ_g	3473	3473
2	Σ_g	1900	1900
3	Σ_u	3380	3380
4	Π_g	611	611
4	Π_g	611	611
5	Π_u	707	707
5	Π_u	707	707

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.622
C2	0.000	0.000	-0.622
H3	0.000	0.000	1.697
H4	0.000	0.000	-1.697

	C1	C2	H3	H4
C1		1.2438	1.0754	2.3192
C2	1.2438		2.3192	1.0754
H3	1.0754	2.3192		3.3946
H4	2.3192	1.0754	3.3946

All results from a given calculation for C₂H₂ (Acetylene)

using model chemistry: MP4=FULL/LANL2DZ

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/LANL2DZ

States and conformations

All results from a given calculation for C₂H₂ (Acetylene)