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	hartrees
Energy at 0K	-2552.088354
Energy at 298.15K	-2552.090717
HF Energy	-2551.345180
Nuclear repulsion energy	310.709713

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	A₁	3259	3134
2	A₁	3215	3091
3	A₁	1478	1421
4	A₁	1391	1338
5	A₁	1121	1077
6	A₁	1049	1008
7	A₁	769	740
8	A₁	456	438
9	A₂	872	839
10	A₂	685	659
11	A₂	537	516
12	B₁	865	832
13	B₁	720	692
14	B₁	396	380
15	B₂	3257	3132
16	B₂	3201	3078
17	B₂	1565	1505
18	B₂	1283	1234
19	B₂	1116	1073
20	B₂	836	804
21	B₂	627	603

Atom	y (Å)	z (Å)
Se1	0.000	0.912
C2	1.291	-0.436
C3	-1.291	-0.436
C4	0.716	-1.682
C5	-0.716	-1.682
H6	2.351	-0.199
H7	-2.351	-0.199
H8	1.306	-2.597
H9	-1.306	-2.597

	Se1	C2	C3	C4	C5	H6	H7	H8	H9
Se1		1.8667	1.8667	2.6909	2.6909	2.6004	2.6004	3.7446	3.7446
C2	1.8667		2.5827	1.3722	2.3628	1.0856	3.6500	2.1615	3.3793
C3	1.8667	2.5827		2.3628	1.3722	3.6500	1.0856	3.3793	2.1615
C4	2.6909	1.3722	2.3628		1.4325	2.2067	3.4066	1.0892	2.2201
C5	2.6909	2.3628	1.3722	1.4325		3.4066	2.2067	2.2201	1.0892
H6	2.6004	1.0856	3.6500	2.2067	3.4066		4.7019	2.6156	4.3733
H7	2.6004	3.6500	1.0856	3.4066	2.2067	4.7019		4.3733	2.6156
H8	3.7446	2.1615	3.3793	1.0892	2.2201	2.6156	4.3733		2.6125
H9	3.7446	3.3793	2.1615	2.2201	1.0892	4.3733	2.6156	2.6125

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Se1	C2	C4	111.450	Se1	C2	H6	121.188
Se1	C3	C5	111.450	Se1	C3	H7	121.188
C2	Se1	C3	87.544	C2	C4	C5	114.778
C2	C4	H8	122.424	C3	C5	C4	114.778
C3	C5	H9	122.424	C4	C2	H6	127.363
C4	C5	H9	122.798	C5	C3	H7	127.363
C5	C4	H8	122.798

All results from a given calculation for C₄H₄Se (selenophene)

using model chemistry: MP4=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 C4H4Se (selenophene)

using model chemistry: MP4=FULL/6-31G*

States and conformations

All results from a given calculation for C₄H₄Se (selenophene)