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	hartrees
Energy at 0K	-113.698362
Energy at 298.15K
HF Energy	-113.362133
Nuclear repulsion energy	36.157972

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	A₁	1192	1192
2	A₁	194	194
3	B₂	2143	2143

Atom	y (Å)	z (Å)
C1	0.000	-0.000
C2	1.317	0.000
C3	-1.317	0.000

	C1	C2	C3
C1		1.3172	1.3172
C2	1.3172		2.6343
C3	1.3172	2.6343

Number	Element	Mulliken
1	C	-0.153
2	C	0.077
3	C	0.077

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

using model chemistry: ROMP2/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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<r²>	32.372
(<r²>)^1/2	5.690

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

using model chemistry: ROMP2/cc-pVDZ

States and conformations

Conformer 1 (D*H)

Conformer 2 (C2V)

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