C21H21Si
4 compounds have this formula on CompoundList.
- Molar mass
- 301.48g/mol
- Monoisotopic mass
- 301.1413Da
- Atoms
- 43
- Elements
- 3
The formula C21H21Si describes a molecule made of 21 carbon atoms, 21 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 × 2183.66%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 217.02%1.008 × 21 = 21.168 g/mol
- Si Silicon × 19.32%28.085 × 1 = 28.085 g/mol
Compounds with the formula C21H21Si
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 4 of 4 compounds
Frequently asked questions
What is the molar mass of C21H21Si?
The molar mass of C21H21Si is 301.48 g/mol, calculated from standard atomic weights for 21 carbon atoms, 21 hydrogen atoms and 1 silicon atom. The monoisotopic mass is 301.1413 Da.
How many compounds have the formula C21H21Si?
CompoundList lists 4 compounds with the molecular formula C21H21Si, including Tri(O-tolyl)silane, Tris(4-methylphenyl)silane, Tribenzylsilicon. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.