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	hartrees
Energy at 0K	-155.542304
Energy at 298.15K	-155.548542
HF Energy	-154.917847
Nuclear repulsion energy	113.264933

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3275	3094	15.89
2	A₁	3120	2947	29.75
3	A₁	1614	1525	0.48
4	A₁	1513	1429	0.02
5	A₁	1232	1163	1.68
6	A₁	1152	1088	0.03
7	A₁	1026	969	0.00
8	A₁	926	875	0.90
9	A₂	3173	2997	0.00
10	A₂	1189	1123	0.00
11	A₂	1040	982	0.00
12	A₂	943	890	0.00
13	A₂	297	281	0.00
14	B₁	3186	3009	30.25
15	B₁	1116	1054	4.53
16	B₁	885	836	12.79
17	B₁	656	619	37.06
18	B₂	3244	3064	8.34
19	B₂	3116	2944	27.00
20	B₂	1491	1408	0.20
21	B₂	1334	1260	11.21
22	B₂	1244	1175	1.97
23	B₂	929	878	11.17
24	B₂	855	807	1.26

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.673	0.812
C2	0.000	-0.673	0.812
C3	0.000	0.783	-0.698
C4	0.000	-0.783	-0.698
H5	0.000	1.419	1.596
H6	0.000	-1.419	1.596
H7	0.888	1.239	-1.141
H8	-0.888	-1.239	-1.141
H9	-0.888	1.239	-1.141
H10	0.888	-1.239	-1.141

	C1	C2	C3	C4	H5	H6	H7	H8	H9	H10
C1		1.3456	1.5143	2.0976	1.0824	2.2341	2.2189	2.8738	2.2189	2.8738
C2	1.3456		2.0976	1.5143	2.2341	1.0824	2.8738	2.2189	2.8738	2.2189
C3	1.5143	2.0976		1.5658	2.3807	3.1800	1.0920	2.2524	1.0920	2.2524
C4	2.0976	1.5143	1.5658		3.1800	2.3807	2.2524	1.0920	2.2524	1.0920
H5	1.0824	2.2341	2.3807	3.1800		2.8386	2.8829	3.9175	2.8829	3.9175
H6	2.2341	1.0824	3.1800	2.3807	2.8386		3.9175	2.8829	3.9175	2.8829
H7	2.2189	2.8738	1.0920	2.2524	2.8829	3.9175		3.0488	1.7754	2.4786
H8	2.8738	2.2189	2.2524	1.0920	3.9175	2.8829	3.0488		2.4786	1.7754
H9	2.2189	2.8738	1.0920	2.2524	2.8829	3.9175	1.7754	2.4786		3.0488
H10	2.8738	2.2189	2.2524	1.0920	3.9175	2.8829	2.4786	1.7754	3.0488

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C4	94.170	C1	C2	H6	133.604
C1	C3	C4	85.830	C1	C3	H7	115.778
C1	C3	H9	115.778	C2	C1	C3	94.170
C2	C1	H5	133.604	C2	C4	C3	85.830
C2	C4	H8	115.778	C2	C4	H10	115.778
C3	C1	H5	132.226	C3	C4	H8	114.704
C3	C4	H10	114.704	C4	C2	H6	132.226
C4	C3	H7	114.704	C4	C3	H9	114.704
H7	C3	H9	108.765	H8	C4	H10	108.765

All results from a given calculation for C₄H₆ (Cyclobutene)

using model chemistry: MP2/6-31G(2df,p)

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(2df,p)

States and conformations

All results from a given calculation for C₄H₆ (Cyclobutene)