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	hartrees
Energy at 0K	-155.478578
Energy at 298.15K	-155.484828
HF Energy	-154.909022
Nuclear repulsion energy	113.461406

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3302	3085	21.46
2	A₁	3144	2937	37.35
3	A₁	1651	1543	0.68
4	A₁	1552	1450	0.05
5	A₁	1263	1180	0.84
6	A₁	1175	1098	0.02
7	A₁	1043	975	0.00
8	A₁	933	872	0.95
9	A₂	3197	2987	0.00
10	A₂	1204	1125	0.00
11	A₂	1062	992	0.00
12	A₂	922	861	0.00
13	A₂	292	272	0.00
14	B₁	3210	2999	48.28
15	B₁	1134	1059	4.42
16	B₁	901	842	13.05
17	B₁	660	616	41.53
18	B₂	3271	3056	12.96
19	B₂	3139	2933	35.35
20	B₂	1530	1429	0.00
21	B₂	1370	1281	10.24
22	B₂	1269	1186	3.24
23	B₂	943	882	9.65
24	B₂	857	801	1.39

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.673	0.811
C2	0.000	-0.673	0.811
C3	0.000	0.781	-0.696
C4	0.000	-0.781	-0.696
H5	0.000	1.418	1.594
H6	0.000	-1.418	1.594
H7	0.886	1.235	-1.140
H8	-0.886	-1.235	-1.140
H9	-0.886	1.235	-1.140
H10	0.886	-1.235	-1.140

	C1	C2	C3	C4	H5	H6	H7	H8	H9	H10
C1		1.3455	1.5108	2.0940	1.0809	2.2324	2.2149	2.8688	2.2149	2.8688
C2	1.3455		2.0940	1.5108	2.2324	1.0809	2.8688	2.2149	2.8688	2.2149
C3	1.5108	2.0940		1.5623	2.3769	3.1749	1.0898	2.2467	1.0898	2.2467
C4	2.0940	1.5108	1.5623		3.1749	2.3769	2.2467	1.0898	2.2467	1.0898
H5	1.0809	2.2324	2.3769	3.1749		2.8356	2.8794	3.9111	2.8794	3.9111
H6	2.2324	1.0809	3.1749	2.3769	2.8356		3.9111	2.8794	3.9111	2.8794
H7	2.2149	2.8688	1.0898	2.2467	2.8794	3.9111		3.0401	1.7715	2.4707
H8	2.8688	2.2149	2.2467	1.0898	3.9111	2.8794	3.0401		2.4707	1.7715
H9	2.2149	2.8688	1.0898	2.2467	2.8794	3.9111	1.7715	2.4707		3.0401
H10	2.8688	2.2149	2.2467	1.0898	3.9111	2.8794	2.4707	1.7715	3.0401

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C4	94.113	C1	C2	H6	133.573
C1	C3	C4	85.887	C1	C3	H7	115.843
C1	C3	H9	115.843	C2	C1	C3	94.113
C2	C1	H5	133.573	C2	C4	C3	85.887
C2	C4	H8	115.843	C2	C4	H10	115.843
C3	C1	H5	132.314	C3	C4	H8	114.631
C3	C4	H10	114.631	C4	C2	H6	132.314
C4	C3	H7	114.631	C4	C3	H9	114.631
H7	C3	H9	108.736	H8	C4	H10	108.736

All results from a given calculation for C₄H₆ (Cyclobutene)

using model chemistry: MP2=FULL/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 C4H6 (Cyclobutene)

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

States and conformations

All results from a given calculation for C₄H₆ (Cyclobutene)