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	hartrees
Energy at 0K	-4797.176484
Energy at 298.15K
HF Energy	-4796.670160
Nuclear repulsion energy	307.538648

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A	2536	2388	8.15
2	A	822	774	0.17
3	A	406	383	5.31
4	A	325	306	0.03
5	B	2539	2390	12.52
6	B	824	776	11.67

Atom	x (Å)	y (Å)	z (Å)
Se1	0.000	1.133	-0.029
Se2	0.000	-1.133	-0.029
H3	1.019	1.324	0.993
H4	-1.019	-1.324	0.993

	Se1	Se2	H3	H4
Se1		2.2653	1.4562	2.8496
Se2	2.2653		2.8496	1.4562
H3	1.4562	2.8496		3.3418
H4	2.8496	1.4562	3.3418

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

using model chemistry: CCSD=FULL/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 H2Se2 (hydrogen diselenide)

using model chemistry: CCSD=FULL/6-31G(2df,p)

States and conformations

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