MOLECULAR POLARITYFIELD NOTE 102 / 175
Is Dimethylamine (C2H7N) polar or nonpolar?
Dimethylamine (C2H7N) is polar because its pyramidal nitrogen retains a lone pair between two methyl groups.
Dimethylamine · tetrahedral at C; pyramidal at N
The molecule in space
Drag to turn the molecule. Show angles to read the model geometry.
01 / MODEL RECORDPubChem 3D coordinates. Atom sizes and bond thickness are illustrative.How model data is used ↗
Why C2H7N is polar
Dimethylamine has the connectivity (CH3)2NH. Nitrogen bonds to two carbons and one hydrogen and keeps a lone pair, producing a pyramidal rather than flat arrangement. The polar C–N and N–H contributions do not cancel.
What to notice
Dimethylamine and ethylamine have the same formula C2H7N but different connectivity. The 3D models show two methyl groups on nitrogen here, rather than a two-carbon chain ending in –NH2.
Common questions about Dimethylamine (C2H7N)
- 01
What does the Lewis structure of Dimethylamine (C2H7N) show?
The structure is CH3–NH–CH3. Nitrogen makes three single bonds and has one lone pair; each methyl carbon has four bonds.
- 02
What is the molecular geometry of Dimethylamine (C2H7N)?
Dimethylamine (C2H7N) has a tetrahedral at C; pyramidal at N molecular geometry. The 3D model shows representative bond angles of 110.9° and 109.2° and 111.5°. These angles come from the displayed model coordinates.
- 03
What is the molar mass of Dimethylamine (C2H7N)?
C2H7N has an approximate molar mass of 45.09 g/mol, calculated from its formula using abridged standard atomic weights. Natural isotope variation can change the last digits.