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	hartrees
Energy at 0K	-304.353783
Energy at 298.15K	-304.358688
HF Energy	-303.484646
Nuclear repulsion energy	217.442972

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A	3335	3130	0.77
2	A	3242	3043	0.65
3	A	3211	3014	0.36
4	A	3153	2960	1.24
5	A	2040	1915	383.50
6	A	1833	1720	222.00
7	A	1508	1415	13.29
8	A	1461	1372	2.29
9	A	1335	1253	104.64
10	A	1257	1180	0.57
11	A	1145	1075	1.16
12	A	1099	1031	208.63
13	A	1026	963	2.91
14	A	1019	956	4.32
15	A	950	891	111.33
16	A	849	797	14.67
17	A	846	794	62.86
18	A	750	704	0.24
19	A	694	651	1.57
20	A	542	509	4.49
21	A	525	493	4.79
22	A	447	419	3.58
23	A	323	303	0.89
24	A	129	122	0.78

Atom	x (Å)	y (Å)	z (Å)
C1	-2.264	-0.155	-0.000
H2	-2.685	-1.153	-0.000
H3	-2.937	0.692	-0.000
O4	0.043	-0.967	0.000
C5	1.047	-0.009	0.000
O6	2.222	-0.187	-0.000
C7	0.057	1.155	0.000
H8	0.095	1.779	-0.896
H9	0.095	1.779	0.896
C10	-0.955	0.033	0.000

	C1	H2	H3	O4	C5	O6	C7	H8	H9	C10
C1		1.0831	1.0827	2.4451	3.3141	4.4857	2.6649	3.1791	3.1791	1.3227
H2	1.0831		1.8628	2.7340	3.9034	5.0010	3.5839	4.1385	4.1384	2.0982
H3	1.0827	1.8628		3.4109	4.0457	5.2336	3.0298	3.3431	3.3433	2.0893
O4	2.4451	2.7340	3.4109		1.3879	2.3145	2.1218	2.8889	2.8886	1.4127
C5	3.3141	3.9034	4.0457	1.3879		1.1881	1.5280	2.2151	2.2148	2.0022
O6	4.4857	5.0010	5.2336	2.3145	1.1881		2.5470	3.0317	3.0317	3.1841
C7	2.6649	3.5839	3.0298	2.1218	1.5280	2.5470		1.0925	1.0925	1.5100
H8	3.1791	4.1385	3.3431	2.8889	2.2151	3.0317	1.0925		1.7916	2.2250
H9	3.1791	4.1384	3.3433	2.8886	2.2148	3.0317	1.0925	1.7916		2.2247
C10	1.3227	2.0982	2.0893	1.4127	2.0022	3.1841	1.5100	2.2250	2.2247

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C10	O4	126.699	C1	C10	C7	140.267
H2	C1	H3	118.647	H2	C1	C10	121.091
H3	C1	C10	120.262	O4	C5	O6	127.742
O4	C5	C7	93.253	O4	C10	C7	93.034
C5	O4	C10	91.264	C5	C7	H8	114.383
C5	C7	H9	114.359	C5	C7	C10	82.449
O6	C5	C7	139.005	H8	C7	H9	110.168
H8	C7	C10	116.590	H9	C7	C10	116.568

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

using model chemistry: MP3/6-31G*

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: MP3/6-31G*

States and conformations

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