Butane (C4H10)

Larger alkane for conformation/stat-mech segues; MO viewer shows a single gas-phase geometry snapshot. Teaching note: figures illustrate qualitative electronic structure; quantitative benchmarking should use larger bases, dispersion, and experimental structures.

Geometry
Alkane
Polarity
Nonpolar
Bond angle
~109.5°
Hybridisation
sp3
VSEPR
AX4
Bonds
C–C and C–H σ manifold
Molecular orbitals
26 valence MOs; heavy but still feasible sto-3g for instructional browsing.
SMILES
CCCC

Electron density: spin-paired GPAW (PBE) on an isolated gas-phase geometry; molecular orbitals: restricted mean-field RHF with sto-3g in PySCF unless noted.

Open the interactive 3D viewer · Edit in the Molecule Builder · Plans

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