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Molecular formula

C18H20Si

12 compounds have this formula on CompoundList.

Molar mass
264.44g/mol
Monoisotopic mass
264.1334Da
Atoms
39
Elements
3
Rings plus double bonds
10

The formula C18H20Si describes a molecule made of 18 carbon atoms, 20 hydrogen atoms and 1 silicon atom. It is written in Hill notation: carbon first, then hydrogen, then the other elements in alphabetical order. The formula tells you which atoms are present, not how they are connected, which is why several different chemicals can share it.

Elemental composition

  • C Carbon × 1881.76%
    12.011 × 18 = 216.198 g/mol
  • H Hydrogen × 207.62%
    1.008 × 20 = 20.160 g/mol
  • Si Silicon × 110.62%
    28.085 × 1 = 28.085 g/mol
Look up another formula

Compounds with the formula C18H20Si

Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.

Showing 1 to 12 of 12 compounds

Diphenyldiallylsilane chemical structure, C18H20Si, CAS 10519-88-7
Diphenyldiallylsilane
CAS 10519-88-7C18H20Si
(3,3-Diphenyl-1-cyclopropen-1-yl)(trimethyl)silane chemical structure, C18H20Si, CAS 173595-34-1
(3,3-Diphenyl-1-cyclopropen-1-yl)(trimethyl)silane
CAS 173595-34-1C18H20Si
1,1-Diphenyl-3,4-dimethyl-silacyclopent-3-ene chemical structure, C18H20Si, CAS 29163-98-2
1,1-Diphenyl-3,4-dimethyl-silacyclopent-3-ene
CAS 29163-98-2C18H20Si
tert-Butyl(ethynyl)diphenylsilane chemical structure, C18H20Si, CAS 112440-16-1
tert-Butyl(ethynyl)diphenylsilane
CAS 112440-16-1C18H20Si
Trimethyl[(phenanthren-9-yl)methyl]silane chemical structure, C18H20Si, CAS 114099-91-1
Trimethyl[(phenanthren-9-yl)methyl]silane
CAS 114099-91-1C18H20Si
9-Methyl-10-(trimethylsilyl)anthracene chemical structure, C18H20Si, CAS 126581-89-3
9-Methyl-10-(trimethylsilyl)anthracene
CAS 126581-89-3C18H20Si
(2R,3S)-1,1-Dimethyl-2,3-diphenyl-2,3-dihydro-1H-silole chemical structure, C18H20Si, CAS 87919-77-5
(2R,3S)-1,1-Dimethyl-2,3-diphenyl-2,3-dihydro-1H-silole
CAS 87919-77-5C18H20Si
1,1-Dimethyl-3,4-diphenyl-2,5-dihydro-1H-silole chemical structure, C18H20Si, CAS 110209-73-9
1,1-Dimethyl-3,4-diphenyl-2,5-dihydro-1H-silole
CAS 110209-73-9C18H20Si
2-Phenyl-2-(prop-2-en-1-yl)-1,2,3,4-tetrahydro-2-benzosiline chemical structure, C18H20Si, CAS 62381-47-9
2-Phenyl-2-(prop-2-en-1-yl)-1,2,3,4-tetrahydro-2-benzosiline
CAS 62381-47-9C18H20Si
(2S,3S)-1,1-Dimethyl-2,3-diphenyl-2,3-dihydro-1H-silole chemical structure, C18H20Si, CAS 87919-78-6
(2S,3S)-1,1-Dimethyl-2,3-diphenyl-2,3-dihydro-1H-silole
CAS 87919-78-6C18H20Si
(4-(1H-Inden-7-yl)phenyl)trimethylsilane chemical structure, C18H20Si, CAS 2305932-55-0
(4-(1H-Inden-7-yl)phenyl)trimethylsilane
CAS 2305932-55-0C18H20Si
Di-p-tolyldivinylsilane chemical structure, C18H20Si, CAS 2757100-90-4
Di-p-tolyldivinylsilane
CAS 2757100-90-4C18H20Si

Frequently asked questions

What is the molar mass of C18H20Si?

The molar mass of C18H20Si is 264.44 g/mol, calculated from standard atomic weights for 18 carbon atoms, 20 hydrogen atoms and 1 silicon atom. The monoisotopic mass is 264.1334 Da.

How many compounds have the formula C18H20Si?

CompoundList lists 12 compounds with the molecular formula C18H20Si, including Diphenyldiallylsilane, (3,3-Diphenyl-1-cyclopropen-1-yl)(trimethyl)silane, 1,1-Diphenyl-3,4-dimethyl-silacyclopent-3-ene. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.

What is the degree of unsaturation of C18H20Si?

C18H20Si has a degree of unsaturation of 10. That is the total number of rings and pi bonds (a double bond counts as one, a triple bond as two) in any structure with this formula.