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	hartrees
Energy at 0K	-4778.230791
Energy at 298.15K
HF Energy	-4778.112861
Nuclear repulsion energy	278.385128

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A	2151	2024	57.98
2	A	701	660	1.01
3	A	311	293	7.28
4	A	253	238	0.18
5	B	2146	2020	64.34
6	B	699	658	10.35

Atom	x (Å)	y (Å)	z (Å)
Se1	0.000	1.262	-0.030
Se2	0.000	-1.262	-0.030
H3	1.062	1.403	1.018
H4	-1.062	-1.403	1.018

	Se1	Se2	H3	H4
Se1		2.5232	1.4987	3.0538
Se2	2.5232		3.0538	1.4987
H3	1.4987	3.0538		3.5188
H4	3.0538	1.4987	3.5188

All results from a given calculation for H₂Se₂ (hydrogen diselenide)

using model chemistry: CISD/3-21G

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 H2Se2 (hydrogen diselenide)

using model chemistry: CISD/3-21G

States and conformations

All results from a given calculation for H₂Se₂ (hydrogen diselenide)