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	hartrees
Energy at 0K	-156.758713
Energy at 298.15K	-156.767878
HF Energy	-156.105809
Nuclear repulsion energy	126.246555

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	A₁	3116	2989
2	A₁	3073	2947
3	A₁	1513	1451
4	A₁	1172	1124
5	A₁	1033	991
6	A₁	238	229
7	A₂	1242	1191
8	A₂	952	913
9	B₁	1260	1208
10	B₁	1160	1112
11	B₁	946	907
12	B₂	3143	3014
13	B₂	3063	2937
14	B₂	1475	1415
15	B₂	912	874
16	B₂	619	594
17	E	3127	2999
17	E	3127	2999
18	E	3065	2939
18	E	3065	2939
19	E	1469	1409
19	E	1469	1409
20	E	1289	1236
20	E	1289	1236
21	E	1243	1192
21	E	1243	1192
22	E	918	881
22	E	918	881
23	E	751	720
23	E	751	720

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	1.082	0.149
C2	0.000	-1.082	0.149
C3	-1.082	0.000	-0.149
C4	1.082	0.000	-0.149
H5	0.000	1.355	1.221
H6	0.000	2.007	-0.456
H7	0.000	-1.355	1.221
H8	0.000	-2.007	-0.456
H9	-1.355	0.000	-1.221
H10	-2.007	0.000	0.456
H11	1.355	0.000	-1.221
H12	2.007	0.000	0.456

	C1	C2	C3	C4	H5	H6	H7	H8	H9	H10	H11	H12
C1		2.1648	1.5594	1.5594	1.1059	1.1043	2.6623	3.1476	2.2094	2.3005	2.2094	2.3005
C2	2.1648		1.5594	1.5594	2.6623	3.1476	1.1059	1.1043	2.2094	2.3005	2.2094	2.3005
C3	1.5594	1.5594		2.1648	2.2094	2.3005	2.2094	2.3005	1.1059	1.1043	2.6623	3.1476
C4	1.5594	1.5594	2.1648		2.2094	2.3005	2.2094	2.3005	2.6623	3.1476	1.1059	1.1043
H5	1.1059	2.6623	2.2094	2.2094		1.7986	2.7092	3.7560	3.1031	2.5390	3.1031	2.5390
H6	1.1043	3.1476	2.3005	2.3005	1.7986		3.7560	4.0133	2.5390	2.9805	2.5390	2.9805
H7	2.6623	1.1059	2.2094	2.2094	2.7092	3.7560		1.7986	3.1031	2.5390	3.1031	2.5390
H8	3.1476	1.1043	2.3005	2.3005	3.7560	4.0133	1.7986		2.5390	2.9805	2.5390	2.9805
H9	2.2094	2.2094	1.1059	2.6623	3.1031	2.5390	3.1031	2.5390		1.7986	2.7092	3.7560
H10	2.3005	2.3005	1.1043	3.1476	2.5390	2.9805	2.5390	2.9805	1.7986		3.7560	4.0133
H11	2.2094	2.2094	2.6623	1.1059	3.1031	2.5390	3.1031	2.5390	2.7092	3.7560		1.7986
H12	2.3005	2.3005	3.1476	1.1043	2.5390	2.9805	2.5390	2.9805	3.7560	4.0133	1.7986

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C3	C2	87.915	C1	C3	H9	110.836
C1	C3	H10	118.461	C1	C4	C2	87.915
C1	C4	H11	110.836	C1	C4	H12	118.461
C2	C3	H9	110.836	C2	C3	H10	118.461
C2	C4	H11	110.836	C2	C4	H12	118.461
C3	C1	C4	87.915	C3	C1	H5	110.836
C3	C1	H6	118.461	C3	C2	C4	87.915
C3	C2	H7	110.836	C3	C2	H8	118.461
C4	C1	H5	110.836	C4	C1	H6	118.461
C4	C2	H7	110.836	C4	C2	H8	118.461
H5	C1	H6	108.933	H7	C2	H8	108.933
H9	C3	H10	108.933	H11	C4	H12	108.933

All results from a given calculation for C₄H₈ (cyclobutane)

using model chemistry: QCISD(T)=FULL/cc-pVDZ

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 C4H8 (cyclobutane)

using model chemistry: QCISD(T)=FULL/cc-pVDZ

States and conformations

All results from a given calculation for C₄H₈ (cyclobutane)