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	hartrees
Energy at 0K	-151.069055
Energy at 298.15K
HF Energy	-150.722552
Nuclear repulsion energy	58.368309

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	A₁	3368	3297
2	A₁	1686	1650
3	A₁	1022	1000
4	A₁	806	789
5	A₂	496	485
6	B₁	515	505
7	B₂	3300	3230
8	B₂	920	901
9	B₂	83i	81i

Atom	y (Å)	z (Å)
O1	0.000	0.979
C2	0.646	-0.504
C3	-0.646	-0.504
H4	1.649	-0.888
H5	-1.649	-0.888

	O1	C2	C3	H4	H5
O1		1.6173	1.6173	2.4905	2.4905
C2	1.6173		1.2910	1.0742	2.3262
C3	1.6173	1.2910		2.3262	1.0742
H4	2.4905	1.0742	2.3262		3.2977
H5	2.4905	2.3262	1.0742	3.2977

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
O1	C2	C3	66.476	O1	C2	H4	134.446
O1	C3	C2	66.476	O1	C3	H5	134.446
C2	O1	C3	47.047	C2	C3	H5	159.077
C3	C2	H4	159.077

All results from a given calculation for C₂H₂O (Oxirene)

using model chemistry: MP4=FULL/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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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: MP4=FULL/3-21G

States and conformations

All results from a given calculation for C₂H₂O (Oxirene)