A model showing the atomic orbitals that give rise to the sigma and pi bonds found commonly in hydrocarbons. The example specifically looks at ethane, ethene, and acetelyne.
The orbitals were calculated using ORCA 4.2.1 by Alex Pavelic, an undergraduate research at the University of Wisconsin, Madison. (A member of the berry research group).
The orbitals were visualized using UCSF Chimera.