Additional examples of the effect of multiple bonds on molccular geometry are
shown in Figure 3-15. Comparing Figures 3-14 and 3-15 indicates that multiple bonds
tend to occupy the same positions as lone pairs. For example, the double bonds to oxygen
in SOF4, C102F3, and Xe03F2 are all equatorial, as are the lone pairs in the matching
compounds of steric number 5, SF4, BrF3, and XeF2. Also, multiple bonds, like lone
pairs, tend to occupy more space than single bonds and to cause distortions that in effect
squeeze the rest of the molecule together. In molecules that have both lone pairs and multiple
bonds, these features may compete for space; examples are shown in Figure 3-16.
Additional examples of the effect of multiple bonds on molccular geometry areshown in Figure 3-15. Comparing Figures 3-14 and 3-15 indicates that multiple bondstend to occupy the same positions as lone pairs. For example, the double bonds to oxygenin SOF4, C102F3, and Xe03F2 are all equatorial, as are the lone pairs in the matchingcompounds of steric number 5, SF4, BrF3, and XeF2. Also, multiple bonds, like lonepairs, tend to occupy more space than single bonds and to cause distortions that in effectsqueeze the rest of the molecule together. In molecules that have both lone pairs and multiplebonds, these features may compete for space; examples are shown in Figure 3-16.
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