Hydroselenide

Hydroselenide
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
773467
  • InChI=1S/H2Se/h1H2/p-1
    Key: SPVXKVOXSXTJOY-UHFFFAOYSA-M
  • [SeH-]
Properties
HSe−
Molar mass 79.980 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

A hydroselenide (or biselenide or selanide) is an ion or chemical compound containing the [SeH]− 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.[1]

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.[2]

Properties

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

Hydroselenide occurs naturally in alkaline, oxygen-free waters.[3]

Use

Hydroselenides have been used to introduce selenium into organic compounds, such as replacing a methylsufide group with selenium.[4][5]

List

formula system space group unit cell Å volume density comment reference
ammonium hydroselenide [NH4]SeH at 24.8°C pressure=14 mm Hg [6]
ethylmethylimidazolinium hydroselenide [(C2H5)(CH3)C3N2H2]+SeH− monoclinic P21/n melt 102°C [7]
N-butyl-N-methylpyrollidinium hydroselenide [(C4H9)(CH3)C4NH8]+SeH− decompose 149°C; slightly greenish [7]
sodium hydroselenide NaSeH cubic Fm3m a=6.26 Z=4 245.3 pale grey; water insensitive [8][9][10]
(tris(Hydrogen 3-p-tolylpyrazolyl)borato)-hydroselenato-magnesium [Tpp-Tol]MgSeH monoclinic P21/n a=10.870 b=17.015 c=15.907 β=96.39° [11]
LiAlHSeH grey [4][12]
MeL=HC[(CMe)N(2,4,6-Me3C6H2)]2– [MeLAl(μ-SeH)]2(μ-Se) pale yellow; melt 190°C [13]
MeL=HC[(CMe)N(2,4,6-Me3C6H2)]2– [MeLAl(μ-SeH)]2(μ-O)•2CH3C6H5 orthorhombic Pccn a=21.111 b=13.118 c=20.256 Z=4 5610 1.280 white; decompose 140°C [13]
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 [14]
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 [14]
tri-n-butyl-methylphosphinium hydroselenide [(C4H9)3(CH3)P]+SeH− melt 57°C [7]
KSeH cubic Fm3m a=6.87 Z=4 324.2 [10]
Cp*=(CH3)5(C5H5) Cp*2Ti(SeH)2 [15]
(C5H5)2Ti(SeH)2 [15]
(C5H5)2TiCl(SeH) [15]
PPN[Cr(CO)5SeH] yellow; decompose 94°C [16]
PPN[(CO)5Cr]2(μ-SeH) [16]
Fe2(CO)6(μ2-SeH)2 [16]
[(C5H5)Co]2(μ-P(CH3)2)2(μ-SeH)•PF6 red-brown [17]
dppeNi(SeH)2 [18]
RbSeH cubic Fm3m a=7.16 Z=4 331.4 [10]
Cp* = η5-C5Me5 [(Cp*RhCl)2(μ-SeH)2] orthorhombic Pccn a=13.512 b=20.435 c=8.660 red [19]
(CH2CH2PPh2)3PRhSeH hexagonal P63 a=13.573 c=12.188 Z=2 [20]
(CH2CH2PPh2)3PRh(SeH){H)CF3SO3 [20]
CsSeH cubic Fm3m a=4.437 Z=1 87.4 [10]
Cp*2Ta(Se)SeH [18]
AsPh4[(CO)5W]2(μ-SeH) [16]
Re2(CO)8(μ2-SeH)2 air sensistive [16]
trans-Pt(PEt3)2(SeH)2 yellow; air sensitive [18]
trans-Pt(PEt3)2(SeH)2(H)2 [16]
trans-Pt(PEt3)2(SeH)H white; melt 135°C; air sensitive [18]
PtH(SeH)(PPh3)2 air stable;melt 135°C [16]
Pt(PEt3)2(SeH)Cl(H)2 [2]
Pt(PEt3)2(SeH)Br(H)2 [2]
Pt(PEt3)2(SeH)I(H)2 [2]
IrCl(CO)(PPh3)2(SeH)(H) air sensitive; decompose >160°C [16][2]
Cp* = η5-C5Me5 [(Cp*IrCl)2(μ-SeH)2] yellow [19]
(t-BuC5H4)2Nb(η2-Te2)H dark orange [21]
(AdArO)3N3− = tris(2-hydroxy-3-adamantyl-5-methylbenzyl)amine) [((AdArO)3N)U(CH3OC2H4OCH3)(SeH)] [22]
{((AdArO)3N)U}2(μ-SeH)2 [22]
(4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo[8.8.8]hexacosane)-potassium selenido-{2,2',2''-[(1,4,7-triazonane-1,4,7-triyl)tris(methylene)]tris[4-methyl-6-(tricyclo[3.3.1.13,7]decan-1-yl)phenolato]}-uranium ((Ad,MeArO)3tacn)U(SeH) hexagonal P63 a=14.920 c=19.254 Z=2 3711.9 1.451 brown [23]

References

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