Disilyne

Disilyne
Names
	IUPAC name Disilyne
Identifiers
CAS Number	36835-58-2;
3D model (JSmol)	Interactive image;
ChemSpider	16341537;
PubChem CID	71420045;
CompTox Dashboard (EPA)	DTXSID101027153 ;
	InChI InChI=1S/H2Si2/c1-2/h1-2H Key: NWEREQWWNYLPTF-UHFFFAOYSA-N;
	SMILES [SiH]#[SiH];
Properties
Chemical formula	H2Si2
Molar mass	58.186 g·mol−1
Related compounds
Related compounds	Acetylene ; methylacetylene
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Disilyne is a low valent silicon compound with the chemical formula Si₂R₂ where oxidation state of Si is +1. Several isomers are possible, but none are sufficiently stable to be of practical value. Substituted disilynes contain a formal silicon–silicon triple bond and as such are sometimes written R₂Si₂ (where R is a substituent group). They are the silicon analogues of alkynes.

The term silyne has two diverse meanings. Some chemists use it to refer to compounds containing a silicon–silicon triple bond,^[1] by analogy to the carbon–carbon triple bond in alkynes, whereas others use the term to refer to compounds containing a silicon–carbon triple bond^[2] by analogy to silene, which often refers to compounds containing silicon–carbon double bonds.^[3] The term polysilyne can refer to the layer polymer (SiH)_n or substituted derivatives.^[1]

^ ^a ^b Egon Wiberg, Arnold Frederick Holleman (2001) Inorganic Chemistry, Elsevier ISBN 0-12-352651-5
^ Karni, Miriam; Apeloig, Yitzhak (2002). "The quest for a stable silyne, RSi ≡ CR′. The effect of bulky substituents". Silicon Chemistry. 1: 59–65. doi:10.1023/A:1016091614005. S2CID 97098444.
^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.

[Wiberg&Holleman-1] Egon Wiberg, Arnold Frederick Holleman (2001) Inorganic Chemistry, Elsevier ISBN 0-12-352651-5

[2] Karni, Miriam; Apeloig, Yitzhak (2002). "The quest for a stable silyne, RSi ≡ CR′. The effect of bulky substituents". Silicon Chemistry. 1: 59–65. doi:10.1023/A:1016091614005. S2CID 97098444.

[3] Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.

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