Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)

Property	Value	Uncertainty	units	Reference	Comment

Information can also be found for this species in the NIST Chemistry Webbook

Vibrational levels (cm^-1)

Mode Number	Symmetry	Frequency (cm-1)	Frequency Reference	Intensity (km mol-1)	Int. unc.	Intensity Reference	Comment
1	Σ	2400	1979HUB/HER

vibrational zero-point energy: 1200.0 cm^-1
Calculated vibrational frequencies for HSe^- (selenium monohydride anion).

Rotational Constants (cm^-1)
See section I.F.4 to change rotational constant units

A	B	C	reference	comment
	7.78000	7.78000	1979HUB/HER

Calculated rotational constants for HSe^- (selenium monohydride anion).

Product of moments of inertia
2.16679	amu Å2		3.5981E-40	gm cm2

Geometric Data

Point Group C_∞v

Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees

Description	Value	unc.	Connectivity				Reference	Comment
			Atom 1	Atom 2	Atom 3	Atom 4
rHSe	1.475	0.010	1	2			1979HUB/HER

Cartesians

Atom	x (Å)	y (Å)	z (Å)
Se1	0.0000	0.0000	0.0000
H2	0.0000	0.0000	1.4750

Atom - Atom Distances
Distances in Å

	Se1	H2
Se1		1.4750
H2	1.4750

Calculated geometries for HSe^- (selenium monohydride anion).

Bond descriptions
Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond

Bond Type	Count
HSe	1

Connectivity

Atom 1	Atom 2
Se1	H2

Electronic energy levels (cm^-1)

Energy (cm-1)	Degeneracy	reference	description
0	2		2Π
1815	2	1979HUB/HER
31500	2	1979HUB/HER

Ionization Energies (eV)

Ionization Energy	I.E. unc.	vertical I.E.	v.I.E. unc.	Electron Affinity	E.A. unc.	reference
9.845	0.003			2.213	0.000	webbook

Dipole, Quadrupole and Polarizability
Electric dipole moment
Calculated electric dipole moments for HSe^- (selenium monohydride anion).
Electric quadrupole moment
Calculated electric quadrupole moments for HSe^- (selenium monohydride anion).

References
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squib	reference	DOI
1979HUB/HER	Huber, K.P.; Herzberg, G., Molecular Spectra and Molecular Structure. IV. Constants of Diatomic Molecules,, Van Nostrand Reinhold Co., 1979
webbook	NIST Chemistry Webbook (http://webbook.nist.gov/chemistry)

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