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	hartrees
Energy at 0K	-25.902107
Energy at 298.15K	-25.908276
HF Energy	-25.385576
Nuclear repulsion energy	60.495757

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3223	3071	28.38
2	A₁	3083	2938	48.76
3	A₁	1587	1512	1.03
4	A₁	1525	1453	0.12
5	A₁	1243	1185	1.50
6	A₁	1142	1088	0.26
7	A₁	1017	969	0.01
8	A₁	913	870	1.98
9	A₂	3139	2990	0.00
10	A₂	1168	1113	0.00
11	A₂	1033	985	0.00
12	A₂	865	824	0.00
13	A₂	280	267	0.00
14	B₁	3152	3003	60.52
15	B₁	1109	1056	8.21
16	B₁	878	836	21.63
17	B₁	649	619	59.65
18	B₂	3194	3043	19.14
19	B₂	3077	2932	46.15
20	B₂	1502	1431	0.22
21	B₂	1325	1262	13.52
22	B₂	1230	1172	3.47
23	B₂	916	873	13.46
24	B₂	845	805	0.62

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.680	0.820
C2	0.000	-0.680	0.820
C3	0.000	0.790	-0.705
C4	0.000	-0.790	-0.705
H5	0.000	1.429	1.611
H6	0.000	-1.429	1.611
H7	0.894	1.245	-1.148
H8	-0.894	-1.245	-1.148
H9	-0.894	1.245	-1.148
H10	0.894	-1.245	-1.148

	C1	C2	C3	C4	H5	H6	H7	H8	H9	H10
C1		1.3592	1.5290	2.1176	1.0894	2.2518	2.2339	2.8941	2.2339	2.8941
C2	1.3592		2.1176	1.5290	2.2518	1.0894	2.8941	2.2339	2.8941	2.2339
C3	1.5290	2.1176		1.5793	2.4025	3.2070	1.0966	2.2663	1.0966	2.2663
C4	2.1176	1.5290	1.5793		3.2070	2.4025	2.2663	1.0966	2.2663	1.0966
H5	1.0894	2.2518	2.4025	3.2070		2.8573	2.9056	3.9445	2.9056	3.9445
H6	2.2518	1.0894	3.2070	2.4025	2.8573		3.9445	2.9056	3.9445	2.9056
H7	2.2339	2.8941	1.0966	2.2663	2.9056	3.9445		3.0659	1.7877	2.4907
H8	2.8941	2.2339	2.2663	1.0966	3.9445	2.9056	3.0659		2.4907	1.7877
H9	2.2339	2.8941	1.0966	2.2663	2.9056	3.9445	1.7877	2.4907		3.0659
H10	2.8941	2.2339	2.2663	1.0966	3.9445	2.9056	2.4907	1.7877	3.0659

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C4	94.127	C1	C2	H6	133.439
C1	C3	C4	85.873	C1	C3	H7	115.624
C1	C3	H9	115.624	C2	C1	C3	94.127
C2	C1	H5	133.439	C2	C4	C3	85.873
C2	C4	H8	115.624	C2	C4	H10	115.624
C3	C1	H5	132.434	C3	C4	H8	114.556
C3	C4	H10	114.556	C4	C2	H6	132.434
C4	C3	H7	114.556	C4	C3	H9	114.556
H7	C3	H9	109.195	H8	C4	H10	109.195

All results from a given calculation for C₄H₆ (Cyclobutene)

using model chemistry: MP2/CEP-121G*

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 C4H6 (Cyclobutene)

using model chemistry: MP2/CEP-121G*

States and conformations

All results from a given calculation for C₄H₆ (Cyclobutene)