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	hartrees
Energy at 0K	-337.971639
Energy at 298.15K
HF Energy	-337.429977
Nuclear repulsion energy	225.498949

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3444	3218	0.88
2	A₁	1986	1856	530.36
3	A₁	1723	1610	0.08
4	A₁	1228	1147	60.40
5	A₁	1113	1040	105.97
6	A₁	882	824	28.23
7	A₁	756	706	4.79
8	A₂	927	866	0.00
9	A₂	575	538	0.00
10	B₁	822	768	16.91
11	B₁	764	714	109.24
12	B₁	236	220	4.02
13	B₂	3412	3188	8.95
14	B₂	1404	1312	7.74
15	B₂	1074	1004	111.10
16	B₂	1026	958	45.07
17	B₂	911	851	0.26
18	B₂	535	500	0.00

Atom	y (Å)	z (Å)
C1	0.000	0.814
O2	0.000	2.009
O3	1.127	-0.020
O4	-1.127	-0.020
C5	0.663	-1.363
C6	-0.663	-1.363
H7	1.399	-2.137
H8	-1.399	-2.137

	C1	O2	O3	O4	C5	C6	H7	H8
C1		1.1948	1.4016	1.4016	2.2758	2.2758	3.2659	3.2659
O2	1.1948		2.3204	2.3204	3.4365	3.4365	4.3756	4.3756
O3	1.4016	2.3204		2.2534	1.4215	2.2375	2.1349	3.2958
O4	1.4016	2.3204	2.2534		2.2375	1.4215	3.2958	2.1349
C5	2.2758	3.4365	1.4215	2.2375		1.3251	1.0682	2.2019
C6	2.2758	3.4365	2.2375	1.4215	1.3251		2.2019	1.0682
H7	3.2659	4.3756	2.1349	3.2958	1.0682	2.2019		2.7978
H8	3.2659	4.3756	3.2958	2.1349	2.2019	1.0682	2.7978

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	O3	C5	107.440	C1	O4	C6	107.440
O2	C1	O3	126.500	O2	C1	O4	126.500
O3	C1	O4	107.000	O3	C5	C6	109.060
O3	C5	H7	117.364	O4	C6	C5	109.060
O4	C6	H8	117.364	C5	C6	H8	133.576
C6	C5	H7	133.576

All results from a given calculation for C₃H₂O₃ (vinylene carbonate)

using model chemistry: CISD/3-21G*

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 C3H2O3 (vinylene carbonate)

using model chemistry: CISD/3-21G*

States and conformations

All results from a given calculation for C₃H₂O₃ (vinylene carbonate)