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Hydroselenide

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Hydroselenide
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
Gmelin Reference 773467
PubChem CID
CompTox Dashboard (EPA)
InChI
  • InChI=1S/H2Se/h1H2/p-1Key: SPVXKVOXSXTJOY-UHFFFAOYSA-M
SMILES
Properties
Chemical formula HSe
Molar mass 79.980 g·mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references
Chemical compound

A hydroselenide (or biselenide or selanide) is an ion or chemical compound containing the ion. The radical HSe is a pseudohalogen. Hydroselenide can be a ligand in transition metal complexes where it can be attached to a single atom, or bridge two atoms. The terms used in ligand naming are selanido, or hydrogenselenido.

Similar compounds include the hydrosulfides, and hydrotellurides. Related compounds include toxic hydrogen selenide gas, hydrodiselenides (HSeSe) and the hydride selenides that do not have a bond between hydrogen and selenium.

Production

HSe complexes may be formed by reacting H2Se with a reduced metal complex, forming a hydrido-hyrogenselenido complex. A halide ligand in a complex may be replaced by HSe from sodium hydroselenide.

A metal-metal bond can be replaced by a selenium bridge, that can then be protonated to yield a bridged complex.

Properties

Hydroselenides easily react with water or water vapour to produce the malodourous hydrogen selenide.

Hydroselenide occurs naturally in alkaline, oxygen-free waters.

Use

Hydroselenides have been used to introduce selenium into organic compounds, such as replacing a methylsufide group with selenium.

List

formula system space group unit cell Å volume density comment reference
ammonium hydroselenide SeH at 24.8°C pressure=14 mm Hg
ethylmethylimidazolinium hydroselenide SeH monoclinic P21/n melt 102°C
N-butyl-N-methylpyrollidinium hydroselenide SeH decompose 149°C; slightly greenish
sodium hydroselenide NaSeH cubic Fm3m a=6.26 Z=4 245.3 pale grey; water insensitive
(tris(Hydrogen 3-p-tolylpyrazolyl)borato)-hydroselenato-magnesium MgSeH monoclinic P21/n a=10.870 b=17.015 c=15.907 β=96.39°
LiAlHSeH grey
L=HC2 2(μ-Se) pale yellow; melt 190°C
L=HC2 2(μ-O)•2CH3C6H5 orthorhombic Pccn a=21.111 b=13.118 c=20.256 Z=4 5610 1.280 white; decompose 140°C
b-diketimi-nato N(2,6-iPr2C6H3)C(Me)CHC(Me)N(2,6-iPr2C6H3)Al(SeH)2 orthorhombic Pnma a=13.065 b=22.049 c=10.55.7 Z=4 3047 1.318 yellow; decompose 220°C; dimerizes
N(2,6-iPr2C6H3)C(Me)CHC(Me)N(2,6-iPr2C6H3)(HSe)AlSeAl(SeH)N(2,6-iPr2C6H3)C(Me)CHC(Me)N(2,6-iPr2C6H3) monoclinic P21/n a=12.255 b=27.347 c=17.753 β=98.29° Z=4 5888 1.273 pale yellow; decompose 250°C
tri-n-butyl-methylphosphinium hydroselenide SeH melt 57°C
KSeH cubic Fm3m a=6.87 Z=4 324.2
Cp*=(CH3)5(C5H5) Cp*2Ti(SeH)2
(C5H5)2Ti(SeH)2
(C5H5)2TiCl(SeH)
PPN yellow; decompose 94°C
PPN2(μ-SeH)
Fe2(CO)6(μ2-SeH)2
2(μ-P(CH3)2)2(μ-SeH)•PF6 red-brown
dppeNi(SeH)2
RbSeH cubic Fm3m a=7.16 Z=4 331.4
Cp* = η-C5Me5 orthorhombic Pccn a=13.512 b=20.435 c=8.660 red
(CH2CH2PPh2)3PRhSeH hexagonal P63 a=13.573 c=12.188 Z=2
(CH2CH2PPh2)3PRh(SeH){H)CF3SO3
CsSeH cubic Fm3m a=4.437 Z=1 87.4
Cp*2Ta(Se)SeH
AsPh42(μ-SeH)
Re2(CO)8(μ2-SeH)2 air sensistive
trans-Pt(PEt3)2(SeH)2 yellow; air sensitive
trans-Pt(PEt3)2(SeH)2(H)2
trans-Pt(PEt3)2(SeH)H white; melt 135°C; air sensitive
PtH(SeH)(PPh3)2 air stable;melt 135°C
Pt(PEt3)2(SeH)Cl(H)2
Pt(PEt3)2(SeH)Br(H)2
Pt(PEt3)2(SeH)I(H)2
IrCl(CO)(PPh3)2(SeH)(H) air sensitive; decompose >160°C
Cp* = η-C5Me5 yellow
(t-BuC5H4)2Nb(η-Te2)H dark orange
(ArO)3N = tris(2-hydroxy-3-adamantyl-5-methylbenzyl)amine)
{((ArO)3N)U}2(μ-SeH)2
(4,7,13,16,21,24-hexaoxa-1,10-diazabicyclohexacosane)-potassium selenido-{2,2',2''-trisdecan-1-yl)phenolato]}-uranium ((ArO)3tacn)U(SeH) hexagonal P63 a=14.920 c=19.254 Z=2 3711.9 1.451 brown

References

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