Basic VSEPR

Investigate atom geometries using VSEPR rules.

Task

Build and minimize simple molecules to illustrate VSEPR geometry.

  • For organic-type molecules, use the MMFF94 forcefield.

examples: methane, water, ammonia, etc.

  • For octahedral-based geometries, use the UFF forcefield which is optimized for all elements.

examples: , , , etc.

  • Try even 7, 8, or 9 atoms around a central metal - how do the VSEPR rules extend beyond octahedral molecules?

See also

Organic Hybridization

Further readings

Wikipedia: VSEPR theory

Issues

  • Geometries derived from the trigonal bipyramidal geometry are not currently reliable.
  • When using the Draw tool, you may wish to uncheck the “Adjust Hydrogens” box.

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