Tris(trimethylsilyl)methane
Chemical compound
From Wikipedia, the free encyclopedia
Tris(trimethylsilyl)methane is the organosilicon compound with the formula (tms)3CH (where tms = (CH3)3Si). It is a colorless liquid that is highly soluble in hydrocarbon solvents.
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| Names | |
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| Preferred IUPAC name
Methanetriyltris(trimethylsilane) | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.154.179 |
PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| C10H28Si3 | |
| Molar mass | 232.589 g·mol−1 |
| Appearance | colorless liquid |
| Density | 0.827 g/cm3 |
| Boiling point | 219 °C (426 °F; 492 K) |
| Hazards | |
| GHS labelling: | |
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| Warning | |
| H315, H319, H335 | |
| P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Trisyl chemistry
Reaction of tris(trimethylsilyl)methane with methyl lithium gives tris(trimethylsilyl)methyllithium, called trisyllithium:
- (tms)3CH + CH3Li → (tms)3CLi + CH4
Trisyllithium is useful in Petersen olefination reactions:[2]
- (tms)3CLi + R2CO → (tms)2C=CR2 + tmsOLi
Trisyllithium is also a source of the bulky trisyl ligand. Some tris(trimethylsilyl)methyl derivatives are far more stable than less substituted derivatives. For example, (Me3Si)3CTeH is a well-behaved tellurol.[3] [(Me3Si)3CTl]4 is a rare example of a robust organothallium(I) compound.[4]