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Molecular formula

C21H21BN2Si

1 compound has this formula on CompoundList.

Molar mass
340.31g/mol
Monoisotopic mass
340.1567Da
Atoms
46
Elements
5

The formula C21H21BN2Si describes a molecule made of 21 carbon atoms, 21 hydrogen atoms, 1 boron atom, 2 nitrogen 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 × 2174.12%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 216.22%
    1.008 × 21 = 21.168 g/mol
  • B Boron × 13.18%
    10.81 × 1 = 10.810 g/mol
  • N Nitrogen × 28.23%
    14.007 × 2 = 28.014 g/mol
  • Si Silicon × 18.25%
    28.085 × 1 = 28.085 g/mol
Look up another formula

Compounds with the formula C21H21BN2Si

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

Showing 1 to 1 of 1 compounds

2-(4-((Trimethylsilyl)ethynyl)phenyl)-2,3-dihydro-1H-naphtho[1,8-de][1,3,2]diazaborinine chemical structure, C21H21BN2Si, CAS 1449145-05-4
2-(4-((Trimethylsilyl)ethynyl)phenyl)-2,3-dihydro-1H-naphtho[1,8-de][1,3,2]diazaborinine
CAS 1449145-05-4C21H21BN2Si

Frequently asked questions

What is the molar mass of C21H21BN2Si?

The molar mass of C21H21BN2Si is 340.31 g/mol, calculated from standard atomic weights for 21 carbon atoms, 21 hydrogen atoms, 1 boron atom, 2 nitrogen atoms and 1 silicon atom. The monoisotopic mass is 340.1567 Da.

How many compounds have the formula C21H21BN2Si?

CompoundList lists 1 compound with the molecular formula C21H21BN2Si, including 2-(4-((Trimethylsilyl)ethynyl)phenyl)-2,3-dihydro-1H-naphtho[1,8-de][1,3,2]diazaborinine. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.