Disilane
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| Disilane | |
|---|---|
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| General | |
| Systematic name | disilicon hexahydride |
| Other names | disilane silicon hydride silicon(III) hydride |
| Molecular formula | Si2H6 |
| SMILES | ? |
| Molar mass | 62.219 g/mol |
| Appearance | Colourless, odourless flammable gas |
| CAS number | [1590-87-0] |
| Properties | |
| Density and phase | 2.7 kg/m3 |
| Solubility in water | Insoluble |
| Melting point | -132°C (? K) |
| Boiling point | -14°C (? K) |
| Structure | |
| Molecular shape | Tetrahedral |
| Dipole moment | 0 D |
| Hazards | |
| MSDS | External MSDS |
| Main hazards | Flammable, Toxic |
| NFPA 704 | |
| Flash point | ?°C (Very flammable) |
| R/S statement | R: ? S: ? |
| RTECS number | ? |
| Supplementary data page | |
| Structure and properties |
n, εr, etc. |
| Thermodynamic data |
Phase behaviour Solid, liquid, gas |
| Spectral data | UV, IR, NMR, MS |
| Related compounds | |
| Related silanes | silane, SiH4 |
| Related covalent hydrides | ethane diborane |
| Except where noted otherwise, data are given for materials in their standard state (at 25°C, 100 kPa) Infobox disclaimer and references |
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Disilane is a silicon-hydrogen compound, existing as a gas at room temperature and pressure. It is analogous to ethane, though much more reactive than ethane, due to the larger size of the silicon atom and the weaker Si-Si bonding. Traces are formed during the hydrolysis of magnesium silicide, which produces mainly silane. The presence of traces of disilane is responsible for the spontaneous flammability of silane produced this way, as is diphosphine for phosphine.
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