Pentane

C5H12  ·  all-anti (zigzag) conformer, ideal sp3 geometry ⌂ Home

Skeletal (line-angle) structure

C1 C2 C3 C4 C5
Each vertex and end is a carbon. Hydrogens are implied to fill four bonds.

Lewis (full structural) formula

Hover a carbon in either drawing to find it in the 3D model.

Ideal geometry used in the model

C–C bond length1.54 Å
C–H bond length1.09 Å
Every bond angle (tetrahedral)109.47°
C–C–C–C dihedrals (anti)180°
All other dihedrals (staggered)±60°
These are textbook values, not a force-field minimum. Every carbon sits on a point of the diamond lattice.

How to use the 3D model

  • Drag to rotate, scroll or pinch to zoom.
  • Click 2 atoms for a distance, 3 for an angle, 4 for a dihedral.
  • Use the Newman buttons to sight down a C–C bond.

honestmolecules.com · © 2026 Thomas R. Hoye and Daniel Lee. All rights reserved. Free for classroom and personal study with attribution; no redistribution, modification, or commercial use without written permission.