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	hartrees
Energy at 0K	-151.599748
Energy at 298.15K
HF Energy	-151.140124
Nuclear repulsion energy	53.076473

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	3551	3273	151.04
2	Σ	2232	2058	545.64
3	Σ	1383	1275	26.47
4	Π	613	565	0.02
4	Π	569	524	9.51
5	Π	425	391	27.84
5	Π	330i	305i	132.45

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.024
C2	0.000	0.000	-1.230
O3	0.000	0.000	1.190
H4	0.000	0.000	-2.286

	C1	C2	O3	H4
C1		1.2545	1.1654	2.3104
C2	1.2545		2.4199	1.0559
O3	1.1654	2.4199		3.4758
H4	2.3104	1.0559	3.4758

All results from a given calculation for HCCO (ketenyl radical)

using model chemistry: CISD/6-311+G(3df,2p)

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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