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	hartrees
Energy at 0K	-113.728415
Energy at 298.15K
HF Energy	-113.375973
Nuclear repulsion energy	36.518293

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	A₁	1194	1194
2	A₁	172	172
3	B₂	2149	2149

Atom	y (Å)	z (Å)
C1	0.000	0.000
C2	1.304	-0.000
C3	-1.304	-0.000

	C1	C2	C3
C1		1.3042	1.3042
C2	1.3042		2.6083
C3	1.3042	2.6083

Number	Element	Mulliken
1	C	-0.226
2	C	0.113
3	C	0.113

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

using model chemistry: ROMP2/6-311G*

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>	31.965
(<r²>)^1/2	5.654

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

using model chemistry: ROMP2/6-311G*

States and conformations

Conformer 1 (D*H)

Conformer 2 (C2V)

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