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Molecular formula

C18H54N3Si6Tb

1 compound has this formula on CompoundList.

Molar mass
640.09g/mol
Monoisotopic mass
639.2187Da
Atoms
82
Elements
5

The formula C18H54N3Si6Tb describes a molecule made of 18 carbon atoms, 54 hydrogen atoms, 3 nitrogen atoms, 6 silicon atoms and 1 terbium 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 × 1833.78%
    12.011 × 18 = 216.198 g/mol
  • H Hydrogen × 548.50%
    1.008 × 54 = 54.432 g/mol
  • N Nitrogen × 36.56%
    14.007 × 3 = 42.021 g/mol
  • Si Silicon × 626.33%
    28.085 × 6 = 168.510 g/mol
  • Tb Terbium × 124.83%
    158.93 × 1 = 158.930 g/mol
Look up another formula

Compounds with the formula C18H54N3Si6Tb

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

Showing 1 to 1 of 1 compounds

Tris[N,N-bis(trimethylsilyl)amide]terbium(III) chemical structure, C18H54N3Si6Tb, CAS 109433-86-5
Tris[N,N-bis(trimethylsilyl)amide]terbium(III)
CAS 109433-86-5C18H54N3Si6Tb

Frequently asked questions

What is the molar mass of C18H54N3Si6Tb?

The molar mass of C18H54N3Si6Tb is 640.09 g/mol, calculated from standard atomic weights for 18 carbon atoms, 54 hydrogen atoms, 3 nitrogen atoms, 6 silicon atoms and 1 terbium atom. The monoisotopic mass is 639.2187 Da.

How many compounds have the formula C18H54N3Si6Tb?

CompoundList lists 1 compound with the molecular formula C18H54N3Si6Tb, including Tris[N,N-bis(trimethylsilyl)amide]terbium(III). Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.