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	hartrees
Energy at 0K	-304.466919
Energy at 298.15K	-304.471747
HF Energy	-303.551038
Nuclear repulsion energy	217.231443

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A	3318	3153	0.33
2	A	3211	3051	0.79
3	A	3199	3040	0.26
4	A	3129	2974	1.46
5	A	1952	1855	312.75
6	A	1767	1679	253.29
7	A	1480	1406	16.83
8	A	1433	1362	2.77
9	A	1288	1224	85.07
10	A	1225	1164	2.23
11	A	1137	1080	1.20
12	A	1031	980	171.02
13	A	1004	954	2.62
14	A	990	941	1.82
15	A	922	876	154.21
16	A	828	787	34.74
17	A	791	752	69.48
18	A	741	704	0.68
19	A	678	644	0.09
20	A	533	506	3.20
21	A	516	490	3.22
22	A	446	423	4.26
23	A	316	300	0.55
24	A	123	117	0.58

Atom	x (Å)	y (Å)	z (Å)
C1	-2.263	-0.154	-0.000
H2	-2.682	-1.152	-0.000
H3	-2.933	0.696	-0.000
O4	0.040	-0.974	0.000
C5	1.047	-0.006	-0.000
O6	2.222	-0.186	-0.000
C7	0.054	1.156	0.000
H8	0.090	1.780	-0.896
H9	0.090	1.780	0.896
C10	-0.949	0.033	0.000

	C1	H2	H3	O4	C5	O6	C7	H8	H9	C10
C1		1.0828	1.0821	2.4443	3.3135	4.4851	2.6622	3.1747	3.1747	1.3276
H2	1.0828		1.8651	2.7280	3.9019	4.9988	3.5806	4.1335	4.1335	2.1003
H3	1.0821	1.8651		3.4093	4.0412	5.2296	3.0223	3.3337	3.3338	2.0919
O4	2.4443	2.7280	3.4093		1.3972	2.3203	2.1304	2.8960	2.8960	1.4109
C5	3.3135	3.9019	4.0412	1.3972		1.1886	1.5286	2.2150	2.2149	1.9961
O6	4.4851	4.9988	5.2296	2.3203	1.1886		2.5496	3.0348	3.0348	3.1782
C7	2.6622	3.5806	3.0223	2.1304	1.5286	2.5496		1.0917	1.0917	1.5061
H8	3.1747	4.1335	3.3337	2.8960	2.2150	3.0348	1.0917		1.7911	2.2208
H9	3.1747	4.1335	3.3338	2.8960	2.2149	3.0348	1.0917	1.7911		2.2208
C10	1.3276	2.1003	2.0919	1.4109	1.9961	3.1782	1.5061	2.2208	2.2208

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C10	O4	126.369	C1	C10	C7	139.853
H2	C1	H3	118.973	H2	C1	C10	120.891
H3	C1	C10	120.136	O4	C5	O6	127.435
O4	C5	C7	93.354	O4	C10	C7	93.778
C5	O4	C10	90.609	C5	C7	H8	114.380
C5	C7	H9	114.379	C5	C7	C10	82.258
O6	C5	C7	139.210	H8	C7	H9	110.244
H8	C7	C10	116.598	H9	C7	C10	116.597

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

using model chemistry: MP2/6-311G*

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: MP2/6-311G*

States and conformations

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