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	hartrees
Energy at 0K	-304.365889
Energy at 298.15K	-304.370731
HF Energy	-303.482512
Nuclear repulsion energy	216.856361

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A	3345	3151	0.16
2	A	3244	3056	1.27
3	A	3215	3029	0.09
4	A	3149	2967	0.98
5	A	1961	1847	278.72
6	A	1794	1690	232.79
7	A	1504	1417	12.82
8	A	1458	1373	2.30
9	A	1297	1222	82.62
10	A	1248	1176	0.91
11	A	1143	1077	0.77
12	A	1052	991	180.04
13	A	1009	950	3.33
14	A	1008	950	4.03
15	A	923	870	122.80
16	A	835	787	41.65
17	A	829	781	65.11
18	A	748	705	0.04
19	A	675	636	0.17
20	A	532	501	3.54
21	A	518	488	3.74
22	A	448	422	3.01
23	A	318	300	0.58
24	A	127	120	0.70

Atom	x (Å)	y (Å)	z (Å)
C1	-2.267	-0.150	-0.000
H2	-2.689	-1.147	-0.000
H3	-2.934	0.701	-0.000
O4	0.037	-0.978	0.000
C5	1.048	-0.005	-0.000
O6	2.233	-0.181	0.000
C7	0.053	1.149	0.000
H8	0.091	1.775	-0.895
H9	0.091	1.775	0.895
C10	-0.954	0.035	0.000

	C1	H2	H3	O4	C5	O6	C7	H8	H9	C10
C1		1.0827	1.0822	2.4480	3.3177	4.4993	2.6590	3.1726	3.1726	1.3253
H2	1.0827		1.8647	2.7314	3.9075	5.0156	3.5768	4.1313	4.1313	2.0992
H3	1.0822	1.8647		3.4132	4.0443	5.2416	3.0207	3.3325	3.3325	2.0890
O4	2.4480	2.7314	3.4132		1.4029	2.3358	2.1277	2.8954	2.8953	1.4177
C5	3.3177	3.9075	4.0443	1.4029		1.1977	1.5242	2.2103	2.2103	2.0027
O6	4.4993	5.0156	5.2416	2.3358	1.1977		2.5535	3.0352	3.0351	3.1943
C7	2.6590	3.5768	3.0207	2.1277	1.5242	2.5535		1.0925	1.0925	1.5023
H8	3.1726	4.1313	3.3325	2.8954	2.2103	3.0352	1.0925		1.7901	2.2183
H9	3.1726	4.1313	3.3325	2.8953	2.2103	3.0351	1.0925	1.7901		2.2183
C10	1.3253	2.0992	2.0890	1.4177	2.0027	3.1943	1.5023	2.2183	2.2183

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C10	O4	126.342	C1	C10	C7	140.152
H2	C1	H3	118.943	H2	C1	C10	121.002
H3	C1	C10	120.055	O4	C5	O6	127.663
O4	C5	C7	93.164	O4	C10	C7	93.506
C5	O4	C10	90.472	C5	C7	H8	114.267
C5	C7	H9	114.269	C5	C7	C10	82.858
O6	C5	C7	139.173	H8	C7	H9	110.019
H8	C7	C10	116.609	H9	C7	C10	116.607

All results from a given calculation for C₄H₄O₂ (2-Oxetanone, 4-methylene-)

using model chemistry: MP2=FULL/6-31G*

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 C4H4O2 (2-Oxetanone, 4-methylene-)

using model chemistry: MP2=FULL/6-31G*

States and conformations

All results from a given calculation for C₄H₄O₂ (2-Oxetanone, 4-methylene-)