8-12 Octahedral Electronic Geometry: AB 6 , AB 5 U, and AB 4 U 2 339TABLE 8-3 (continued)Regions
of High
General Electron Electronic Hybridization at Lone
Formula Density Geometry Central Atom Pairs Molecular Geometry Examples
AB 3 U 2 5 trigonal sp^3 d 2 ICl 3 , ClF 3
bipyramidal
AB 2 U 3 5 trigonal sp^3 d 3 XeF 2 , I 3
bipyramidal
AB 5 U 6 octahedral sp^3 d^2 1IF 5 , BrF 5
AB 4 U 2 6 octahedral sp^3 d^22 XeF 4 , IF 4
T-shapedLinearSquare
pyramidalSquare
planar