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	hartrees
Energy at 0K	-155.429332
Energy at 298.15K	-155.435574
HF Energy	-154.898541
Nuclear repulsion energy	113.278891

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3268	3079	21.47
2	A₁	3117	2937	34.51
3	A₁	1647	1552	0.34
4	A₁	1555	1465	0.01
5	A₁	1262	1189	1.63
6	A₁	1172	1104	0.08
7	A₁	1042	982	0.01
8	A₁	935	881	1.24
9	A₂	3167	2984	0.00
10	A₂	1204	1135	0.00
11	A₂	1068	1006	0.00
12	A₂	910	858	0.00
13	A₂	298	281	0.00
14	B₁	3179	2995	45.29
15	B₁	1134	1069	4.28
16	B₁	902	850	12.14
17	B₁	658	620	48.31
18	B₂	3238	3051	12.87
19	B₂	3113	2933	32.62
20	B₂	1533	1444	0.14
21	B₂	1362	1284	12.09
22	B₂	1270	1196	3.58
23	B₂	942	888	11.11
24	B₂	860	810	1.32

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.673	0.811
C2	0.000	-0.673	0.811
C3	0.000	0.782	-0.697
C4	0.000	-0.782	-0.697
H5	0.000	1.422	1.598
H6	0.000	-1.422	1.598
H7	0.889	1.239	-1.142
H8	-0.889	-1.239	-1.142
H9	-0.889	1.239	-1.142
H10	0.889	-1.239	-1.142

	C1	C2	C3	C4	H5	H6	H7	H8	H9	H10
C1		1.3454	1.5118	2.0951	1.0865	2.2378	2.2199	2.8744	2.2199	2.8744
C2	1.3454		2.0951	1.5118	2.2378	1.0865	2.8744	2.2199	2.8744	2.2199
C3	1.5118	2.0951		1.5638	2.3819	3.1816	1.0949	2.2526	1.0949	2.2526
C4	2.0951	1.5118	1.5638		3.1816	2.3819	2.2526	1.0949	2.2526	1.0949
H5	1.0865	2.2378	2.3819	3.1816		2.8448	2.8864	3.9219	2.8864	3.9219
H6	2.2378	1.0865	3.1816	2.3819	2.8448		3.9219	2.8864	3.9219	2.8864
H7	2.2199	2.8744	1.0949	2.2526	2.8864	3.9219		3.0506	1.7790	2.4782
H8	2.8744	2.2199	2.2526	1.0949	3.9219	2.8864	3.0506		2.4782	1.7790
H9	2.2199	2.8744	1.0949	2.2526	2.8864	3.9219	1.7790	2.4782		3.0506
H10	2.8744	2.2199	2.2526	1.0949	3.9219	2.8864	2.4782	1.7790	3.0506

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C4	94.142	C1	C2	H6	133.632
C1	C3	C4	85.858	C1	C3	H7	115.855
C1	C3	H9	115.855	C2	C1	C3	94.142
C2	C1	H5	133.632	C2	C4	C3	85.858
C2	C4	H8	115.855	C2	C4	H10	115.855
C3	C1	H5	132.226	C3	C4	H8	114.682
C3	C4	H10	114.682	C4	C2	H6	132.226
C4	C3	H7	114.682	C4	C3	H9	114.682
H7	C3	H9	108.661	H8	C4	H10	108.661

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)