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	hartrees
Energy at 0K	-304.579256
Energy at 298.15K	-304.584094
HF Energy	-303.551341
Nuclear repulsion energy	217.430803

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A	3322	3146	0.30
2	A	3215	3045	0.84
3	A	3202	3033	0.21
4	A	3133	2967	1.39
5	A	1957	1853	311.94
6	A	1772	1678	256.18
7	A	1480	1402	17.27
8	A	1434	1359	2.83
9	A	1291	1223	84.51
10	A	1227	1162	2.41
11	A	1139	1079	1.18
12	A	1032	978	172.17
13	A	1007	954	2.80
14	A	991	939	1.94
15	A	925	876	153.09
16	A	830	786	35.79
17	A	794	752	69.56
18	A	742	702	0.69
19	A	679	643	0.08
20	A	534	506	3.25
21	A	518	490	3.32
22	A	447	424	4.27
23	A	317	300	0.56
24	A	124	118	0.60

Atom	x (Å)	y (Å)	z (Å)
C1	-2.263	-0.151	-0.000
H2	-2.685	-1.148	-0.000
H3	-2.925	0.704	-0.000
O4	0.039	-0.974	0.000
C5	1.049	-0.004	0.000
O6	2.223	-0.183	-0.000
C7	0.052	1.152	0.000
H8	0.087	1.773	-0.896
H9	0.087	1.773	0.897
C10	-0.948	0.028	0.000

	C1	H2	H3	O4	C5	O6	C7	H8	H9	C10
C1		1.0822	1.0814	2.4442	3.3152	4.4858	2.6566	3.1670	3.1669	1.3273
H2	1.0822		1.8670	2.7294	3.9052	5.0016	3.5750	4.1256	4.1254	2.0979
H3	1.0814	1.8670		3.4057	4.0367	5.2239	3.0108	3.3199	3.3201	2.0896
O4	2.4442	2.7294	3.4057		1.4002	2.3225	2.1257	2.8897	2.8893	1.4062
C5	3.3152	3.9052	4.0367	1.4002		1.1874	1.5266	2.2105	2.2102	1.9971
O6	4.4858	5.0016	5.2239	2.3225	1.1874		2.5486	3.0316	3.0316	3.1776
C7	2.6566	3.5750	3.0108	2.1257	1.5266	2.5486		1.0910	1.0910	1.5041
H8	3.1670	4.1256	3.3199	2.8897	2.2105	3.0316	1.0910		1.7928	2.2179
H9	3.1669	4.1254	3.3201	2.8893	2.2102	3.0316	1.0910	1.7928		2.2176
C10	1.3273	2.0979	2.0896	1.4062	1.9971	3.1776	1.5041	2.2179	2.2176

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C10	O4	126.783	C1	C10	C7	139.438
H2	C1	H3	119.278	H2	C1	C10	120.731
H3	C1	C10	119.991	O4	C5	O6	127.487
O4	C5	C7	93.051	O4	C10	C7	93.779
C5	O4	C10	90.734	C5	C7	H8	114.208
C5	C7	H9	114.181	C5	C7	C10	82.436
O6	C5	C7	139.462	H8	C7	H9	110.497
H8	C7	C10	116.545	H9	C7	C10	116.517

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

using model chemistry: MP2=FULL/6-311G*

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/6-311G*

States and conformations

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