Molecular+Geometries+of+Species+with+5+or+6+Electron+Domains

An Interpretive Dance
By: Hammy Molecular geometry is the arrangement of atoms in a molecule. When a molecule has 5 electron domains, it exists as either trigonal bipyramidal, disphenoidal, T-shaped, or linear. When a molecule has 6 electron domains, it can exist as octahedral, square pyramidal, or square planar. These alternate forms are created when there is a pair of unshared electrons in place of an atom. For example: SF4 has 5 electron domains but is disphenoidal because of its pair of unshared electrons.

Five Electron Domains:
AX5 - Trigonal bipyramid AX4E - Disphenoidal AX3E2 - T-shaped AX2E3 - Linear [|Table]
 * Molecule || Lewis Structure || 3-D Structure || Comments ||
 * PF5 || [[image:http://dbhs.wvusd.k12.ca.us/webdocs/VSEPR/LewisStructure-PF5.GIF]] || [[image:http://dbhs.wvusd.k12.ca.us/webdocs/VSEPR/ThreeD-PF5.GIF]] || trigonal bipyramid ||
 * OSF4 || [[image:http://dbhs.wvusd.k12.ca.us/webdocs/VSEPR/LewisStructure-OSF4.GIF]] || [[image:http://dbhs.wvusd.k12.ca.us/webdocs/VSEPR/ThreeD-OSF4.GIF]] || The color red is simply there to help tell the electron pairs apart. It serves no other function. ||
 * Molecule || Lewis Structure || 3-D Structure || Comments ||
 * SF4 || [[image:http://dbhs.wvusd.k12.ca.us/webdocs/VSEPR/LewisStructure-SF4.GIF align="center"]] || [[image:http://dbhs.wvusd.k12.ca.us/webdocs/VSEPR/ThreeD-SF4.GIF align="center"]] || disphenoidal: the unshared electron pair is in the plane of the page. Also called see-saw or teeter-totter. ||
 * Molecule || Lewis Structure || 3-D Structure || Comments ||
 * ClF3 || [[image:http://dbhs.wvusd.k12.ca.us/webdocs/VSEPR/LewisStructure-ClF3.GIF align="center"]] || [[image:http://dbhs.wvusd.k12.ca.us/webdocs/VSEPR/ThreeD-ClF3.GIF align="center"]] || T-shaped: the two unshared electron pairs are projected in front of and behind the plane of the page. ||
 * Molecule || Lewis Structure || 3-D Structure || Comments ||
 * I3¯ || [[image:http://dbhs.wvusd.k12.ca.us/webdocs/VSEPR/LewisStructure-I3-.GIF]] || [[image:http://dbhs.wvusd.k12.ca.us/webdocs/VSEPR/ThreeD-I3-.GIF]] || linear ||

Six Electron Domains:
AX6 - Octahedral AX5E - Square pyramidal AX4E2 - Square planar [|Table2]
 * Molecule || Lewis Structure || 3-D Structure || Comments ||
 * SF6 || [[image:http://dbhs.wvusd.k12.ca.us/webdocs/VSEPR/LewisStructure-SF6.GIF align="center"]] || [[image:http://dbhs.wvusd.k12.ca.us/webdocs/VSEPR/ThreeD-SF6.GIF align="center"]] || octahedral ||
 * Molecule || Lewis Structure || 3-D Structure || Comments ||
 * BrF5 || [[image:http://dbhs.wvusd.k12.ca.us/webdocs/VSEPR/LewisStructure-BrF5.GIF align="center"]] || [[image:http://dbhs.wvusd.k12.ca.us/webdocs/VSEPR/ThreeD-BrF5.GIF align="center"]] || square pyramidal ||
 * Molecule || Lewis Structure || 3-D Structure || Comments ||
 * XeF4 || [[image:http://dbhs.wvusd.k12.ca.us/webdocs/VSEPR/LewisStructure-XeF4.GIF]] || [[image:http://dbhs.wvusd.k12.ca.us/webdocs/VSEPR/ThreeD-XeF4.GIF]] || square planar ||

Source: same place as the tables