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State	Conformation	minimum conformation	conformer description	state description
1	1	yes	D*H	¹Σ_g
1	2	no	C2V	¹A₁

	hartrees
Energy at 0K	-113.747945
Energy at 298.15K
HF Energy	-113.361619
Nuclear repulsion energy	36.084839

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	Σ_g	1188	1144
2	Σ_u	2090	2014
3	Π_u	118	114
3	Π_u	118	114

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.320
C3	0.000	0.000	-1.320

	C1	C2	C3
C1		1.3195	1.3195
C2	1.3195		2.6390
C3	1.3195	2.6390

All results from a given calculation for C₃ (carbon trimer)

using model chemistry: CCSD(T)=FULL/cc-pVDZ

States and conformations

Conformer 1 (D*H)

Conformer 2 (C2V)

	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 C3 (carbon trimer)

using model chemistry: CCSD(T)=FULL/cc-pVDZ

States and conformations

Conformer 1 (D*H)

Conformer 2 (C2V)

All results from a given calculation for C₃ (carbon trimer)