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	hartrees
Energy at 0K	-155.458393
Energy at 298.15K	-155.464634
HF Energy	-154.908901
Nuclear repulsion energy	113.338275

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3299	3089	21.73
2	A₁	3141	2941	37.81
3	A₁	1648	1543	0.72
4	A₁	1550	1452	0.07
5	A₁	1261	1181	0.78
6	A₁	1173	1099	0.02
7	A₁	1042	976	0.00
8	A₁	932	872	0.93
9	A₂	3193	2990	0.00
10	A₂	1202	1126	0.00
11	A₂	1061	993	0.00
12	A₂	915	857	0.00
13	A₂	290	271	0.00
14	B₁	3206	3002	49.10
15	B₁	1131	1059	4.43
16	B₁	900	842	12.81
17	B₁	657	615	41.75
18	B₂	3268	3060	13.16
19	B₂	3136	2937	35.80
20	B₂	1528	1431	0.00
21	B₂	1368	1281	10.13
22	B₂	1267	1186	3.15
23	B₂	942	882	9.48
24	B₂	855	800	1.38

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.674	0.812
C2	0.000	-0.674	0.812
C3	0.000	0.782	-0.697
C4	0.000	-0.782	-0.697
H5	0.000	1.419	1.595
H6	0.000	-1.419	1.595
H7	0.887	1.237	-1.141
H8	-0.887	-1.237	-1.141
H9	-0.887	1.237	-1.141
H10	0.887	-1.237	-1.141

	C1	C2	C3	C4	H5	H6	H7	H8	H9	H10
C1		1.3470	1.5125	2.0963	1.0819	2.2348	2.2174	2.8721	2.2174	2.8721
C2	1.3470		2.0963	1.5125	2.2348	1.0819	2.8721	2.2174	2.8721	2.2174
C3	1.5125	2.0963		1.5641	2.3793	3.1782	1.0909	2.2492	1.0909	2.2492
C4	2.0963	1.5125	1.5641		3.1782	2.3793	2.2492	1.0909	2.2492	1.0909
H5	1.0819	2.2348	2.3793	3.1782		2.8387	2.8823	3.9153	2.8823	3.9153
H6	2.2348	1.0819	3.1782	2.3793	2.8387		3.9153	2.8823	3.9153	2.8823
H7	2.2174	2.8721	1.0909	2.2492	2.8823	3.9153		3.0434	1.7730	2.4735
H8	2.8721	2.2174	2.2492	1.0909	3.9153	2.8823	3.0434		2.4735	1.7730
H9	2.2174	2.8721	1.0909	2.2492	2.8823	3.9153	1.7730	2.4735		3.0434
H10	2.8721	2.2174	2.2492	1.0909	3.9153	2.8823	2.4735	1.7730	3.0434

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C4	94.114	C1	C2	H6	133.582
C1	C3	C4	85.886	C1	C3	H7	115.854
C1	C3	H9	115.854	C2	C1	C3	94.114
C2	C1	H5	133.582	C2	C4	C3	85.886
C2	C4	H8	115.854	C2	C4	H10	115.854
C3	C1	H5	132.304	C3	C4	H8	114.636
C3	C4	H10	114.636	C4	C2	H6	132.304
C4	C3	H7	114.636	C4	C3	H9	114.636
H7	C3	H9	108.712	H8	C4	H10	108.712

All results from a given calculation for C₄H₆ (Cyclobutene)

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

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: MP2/6-31G**

States and conformations

All results from a given calculation for C₄H₆ (Cyclobutene)