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	hartrees
Energy at 0K	-304.371832
Energy at 298.15K	-304.376666
HF Energy	-303.489434
Nuclear repulsion energy	216.767237

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A	3382	3167	0.32
2	A	3272	3064	0.90
3	A	3246	3040	0.30
4	A	3176	2974	1.38
5	A	1957	1833	273.52
6	A	1793	1680	230.77
7	A	1501	1405	10.21
8	A	1460	1367	3.71
9	A	1295	1213	79.25
10	A	1245	1166	0.51
11	A	1139	1066	0.85
12	A	1045	979	179.39
13	A	1005	942	3.85
14	A	1001	937	2.37
15	A	923	864	124.59
16	A	832	779	43.30
17	A	823	771	58.12
18	A	747	700	0.07
19	A	673	631	0.08
20	A	530	496	3.29
21	A	511	479	4.05
22	A	442	414	2.52
23	A	316	296	0.71
24	A	124	117	0.73

Atom	x (Å)	y (Å)	z (Å)
C1	-2.269	-0.150	-0.000
H2	-2.688	-1.143	-0.000
H3	-2.928	0.703	-0.001
O4	0.037	-0.980	0.000
C5	1.050	-0.004	0.000
O6	2.235	-0.180	-0.000
C7	0.051	1.150	0.000
H8	0.088	1.771	-0.893
H9	0.088	1.771	0.893
C10	-0.955	0.033	0.000

	C1	H2	H3	O4	C5	O6	C7	H8	H9	C10
C1		1.0782	1.0777	2.4504	3.3212	4.5034	2.6592	3.1685	3.1684	1.3267
H2	1.0782		1.8611	2.7300	3.9073	5.0163	3.5725	4.1225	4.1223	2.0948
H3	1.0777	1.8611		3.4091	4.0400	5.2378	3.0128	3.3218	3.3220	2.0841
O4	2.4504	2.7300	3.4091		1.4061	2.3389	2.1301	2.8927	2.8923	1.4173
C5	3.3212	3.9073	4.0400	1.4061		1.1982	1.5262	2.2077	2.2073	2.0044
O6	4.5034	5.0163	5.2378	2.3389	1.1982		2.5567	3.0351	3.0351	3.1964
C7	2.6592	3.5725	3.0128	2.1301	1.5262	2.5567		1.0882	1.0882	1.5033
H8	3.1685	4.1225	3.3218	2.8927	2.2077	3.0351	1.0882		1.7862	2.2147
H9	3.1684	4.1223	3.3220	2.8923	2.2073	3.0351	1.0882	1.7862		2.2145
C10	1.3267	2.0948	2.0841	1.4173	2.0044	3.1964	1.5033	2.2147	2.2145

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C10	O4	126.475	C1	C10	C7	139.909
H2	C1	H3	119.361	H2	C1	C10	120.819
H3	C1	C10	119.820	O4	C5	O6	127.634
O4	C5	C7	93.085	O4	C10	C7	93.617
C5	O4	C10	90.453	C5	C7	H8	114.179
C5	C7	H9	114.152	C5	C7	C10	82.845
O6	C5	C7	139.281	H8	C7	H9	110.317
H8	C7	C10	116.526	H9	C7	C10	116.499

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

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

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: MP2/6-31G**

States and conformations

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