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	hartrees
Energy at 0K	-304.392522
Energy at 298.15K	-304.397371
HF Energy	-303.505915
Nuclear repulsion energy	216.209672

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A	3338	3180	0.08
2	A	3224	3071	1.14
3	A	3212	3059	0.10
4	A	3136	2987	1.49
5	A	1956	1863	296.68
6	A	1774	1690	249.40
7	A	1440	1372	11.31
8	A	1417	1349	7.41
9	A	1285	1224	76.70
10	A	1203	1146	2.00
11	A	1113	1060	1.02
12	A	1026	977	173.68
13	A	1001	954	3.26
14	A	974	928	2.09
15	A	916	873	138.46
16	A	831	791	52.54
17	A	821	782	45.24
18	A	736	701	0.12
19	A	675	643	0.02
20	A	530	504	2.87
21	A	514	489	3.94
22	A	455	433	3.25
23	A	313	299	0.70
24	A	129	123	0.64

Atom	x (Å)	y (Å)	z (Å)
C1	-2.277	-0.151	-0.000
H2	-2.705	-1.155	-0.000
H3	-2.934	0.719	-0.001
O4	0.040	-0.979	0.000
C5	1.055	-0.003	0.000
O6	2.236	-0.182	-0.000
C7	0.051	1.157	0.000
H8	0.084	1.782	-0.904
H9	0.084	1.782	0.905
C10	-0.951	0.025	0.000

	C1	H2	H3	O4	C5	O6	C7	H8	H9	C10
C1		1.0915	1.0909	2.4598	3.3350	4.5124	2.6696	3.1825	3.1825	1.3368
H2	1.0915		1.8884	2.7504	3.9327	5.0357	3.5971	4.1503	4.1501	2.1138
H3	1.0909	1.8884		3.4245	4.0540	5.2478	3.0165	3.3248	3.3251	2.1005
O4	2.4598	2.7504	3.4245		1.4084	2.3361	2.1360	2.9063	2.9057	1.4110
C5	3.3350	3.9327	4.0540	1.4084		1.1942	1.5345	2.2248	2.2244	2.0068
O6	4.5124	5.0357	5.2478	2.3361	1.1942		2.5629	3.0510	3.0510	3.1940
C7	2.6696	3.5971	3.0165	2.1360	1.5345	2.5629		1.1001	1.1001	1.5117
H8	3.1825	4.1503	3.3248	2.9063	2.2248	3.0510	1.1001		1.8089	2.2312
H9	3.1825	4.1501	3.3251	2.9057	2.2244	3.0510	1.1001	1.8089		2.2309
C10	1.3368	2.1138	2.1005	1.4110	2.0068	3.1940	1.5117	2.2312	2.2309

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C10	O4	127.045	C1	C10	C7	139.106
H2	C1	H3	119.828	H2	C1	C10	120.697
H3	C1	C10	119.475	O4	C5	O6	127.500
O4	C5	C7	92.972	O4	C10	C7	93.849
C5	O4	C10	90.762	C5	C7	H8	114.214
C5	C7	H9	114.188	C5	C7	C10	82.417
O6	C5	C7	139.528	H8	C7	H9	110.600
H8	C7	C10	116.478	H9	C7	C10	116.451

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

using model chemistry: MP2/cc-pVDZ

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/cc-pVDZ

States and conformations

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