158
Chapter 11 Pauling “3-Electron Bonds” and “Increased-Valence” Structures
Figure 11-6: Construction of “increased-valence structures for
2
NO
,
2
NO ,
2
ClO ,
2
SO
and
SO3 from NO + O
– , NO + O, ClO + O, SO + O
– and SO + O + O. :O and O: are equivalent
valence-bond locations for the oxygen lone-pair 2p electrons, here (for
2
NO
and
2
NO ), and
elsewhere..
11-10 N 2 O 4 , N 2 O 3 and FNO 2
In Sections 7-1 and 7-2 we have provided Lewis valence-bond and molecular
orbital explanations for the existence of a long, weak N-N bond for N 2 O 4 . The
N-N and N-F bond-lengths for N 2 O 3 and FNO 2 are also longer than single bonds
(Table 11-1).
By using the NO and NO 2 valence-bond structures (62) and (64) of Section
11-9, together with the reactions NO 2 + NO 2 , NO 2 + NO 2 and F + NO 2 , we can
construct the “increased-valence” structures (66)-(68)
Chapter 11 Pauling “3-Electron Bonds” and “Increased-Valence” Structures
Figure 11-6: Construction of “increased-valence structures for
2
NO
,
2
NO ,
2
ClO ,
2
SO
and
SO3 from NO + O
– , NO + O, ClO + O, SO + O
– and SO + O + O. :O and O: are equivalent
valence-bond locations for the oxygen lone-pair 2p electrons, here (for
2
NO
and
2
NO ), and
elsewhere..
11-10 N 2 O 4 , N 2 O 3 and FNO 2
In Sections 7-1 and 7-2 we have provided Lewis valence-bond and molecular
orbital explanations for the existence of a long, weak N-N bond for N 2 O 4 . The
N-N and N-F bond-lengths for N 2 O 3 and FNO 2 are also longer than single bonds
(Table 11-1).
By using the NO and NO 2 valence-bond structures (62) and (64) of Section
11-9, together with the reactions NO 2 + NO 2 , NO 2 + NO 2 and F + NO 2 , we can
construct the “increased-valence” structures (66)-(68)