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	hartrees
Energy at 0K	-155.460549
Energy at 298.15K	-155.466821
HF Energy	-154.898815
Nuclear repulsion energy	113.190589

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3278	3076	20.64
2	A₁	3116	2923	37.53
3	A₁	1691	1587	0.41
4	A₁	1560	1463	0.01
5	A₁	1277	1198	1.35
6	A₁	1175	1102	0.05
7	A₁	1040	976	0.00
8	A₁	936	879	1.31
9	A₂	3155	2960	0.00
10	A₂	1212	1137	0.00
11	A₂	1074	1008	0.00
12	A₂	921	864	0.00
13	A₂	311	292	0.00
14	B₁	3168	2973	52.29
15	B₁	1136	1066	4.75
16	B₁	901	845	12.95
17	B₁	664	623	47.88
18	B₂	3247	3047	13.11
19	B₂	3110	2918	36.73
20	B₂	1537	1442	0.12
21	B₂	1371	1286	12.12
22	B₂	1278	1199	2.80
23	B₂	938	880	11.63
24	B₂	878	824	1.14

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.670	0.814
C2	0.000	-0.670	0.814
C3	0.000	0.783	-0.699
C4	0.000	-0.783	-0.699
H5	0.000	1.419	1.599
H6	0.000	-1.419	1.599
H7	0.889	1.241	-1.144
H8	-0.889	-1.241	-1.144
H9	-0.889	1.241	-1.144
H10	0.889	-1.241	-1.144

	C1	C2	C3	C4	H5	H6	H7	H8	H9	H10
C1		1.3401	1.5172	2.0976	1.0854	2.2320	2.2251	2.8772	2.2251	2.8772
C2	1.3401		2.0976	1.5172	2.2320	1.0854	2.8772	2.2251	2.8772	2.2251
C3	1.5172	2.0976		1.5655	2.3850	3.1830	1.0952	2.2552	1.0952	2.2552
C4	2.0976	1.5172	1.5655		3.1830	2.3850	2.2552	1.0952	2.2552	1.0952
H5	1.0854	2.2320	2.3850	3.1830		2.8383	2.8895	3.9238	2.8895	3.9238
H6	2.2320	1.0854	3.1830	2.3850	2.8383		3.9238	2.8895	3.9238	2.8895
H7	2.2251	2.8772	1.0952	2.2552	2.8895	3.9238		3.0542	1.7788	2.4827
H8	2.8772	2.2251	2.2552	1.0952	3.9238	2.8895	3.0542		2.4827	1.7788
H9	2.2251	2.8772	1.0952	2.2552	2.8895	3.9238	1.7788	2.4827		3.0542
H10	2.8772	2.2251	2.2552	1.0952	3.9238	2.8895	2.4827	1.7788	3.0542

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C4	94.261	C1	C2	H6	133.641
C1	C3	C4	85.739	C1	C3	H7	115.869
C1	C3	H9	115.869	C2	C1	C3	94.261
C2	C1	H5	133.641	C2	C4	C3	85.739
C2	C4	H8	115.869	C2	C4	H10	115.869
C3	C1	H5	132.099	C3	C4	H8	114.757
C3	C4	H10	114.757	C4	C2	H6	132.099
C4	C3	H7	114.757	C4	C3	H9	114.757
H7	C3	H9	108.607	H8	C4	H10	108.607

All results from a given calculation for C₄H₆ (Cyclobutene)

using model chemistry: MP3=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: MP3=FULL/6-31G*

States and conformations

All results from a given calculation for C₄H₆ (Cyclobutene)