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	hartrees
Energy at 0K	-150.258170
Energy at 298.15K	-150.257977
HF Energy	-150.258170
Nuclear repulsion energy	51.914672

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	3425	3363	106.74
2	Σ	2109	2071	72.09
3	Σ	1280	1257	17.25
4	Π	703	690	30.22
4	Π	607	596	16.24
5	Π	511	502	5.77
5	Π	404	396	144.98

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.008
C2	0.000	0.000	-1.249
O3	0.000	0.000	1.221
H4	0.000	0.000	-2.320

	C1	C2	O3	H4
C1		1.2576	1.2121	2.3283
C2	1.2576		2.4697	1.0707
O3	1.2121	2.4697		3.5403
H4	2.3283	1.0707	3.5403

Number	Element	Mulliken
1	C	0.161
2	C	-0.071
3	O	-0.377
4	H	0.288

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

using model chemistry: LSDA/3-21G*

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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<r²>	36.680
(<r²>)^1/2	6.056