Some Dioxygenyl Compounds

The (S = S = 1 spin) valence-bond structures for the ground-states of S2 and SO are (30) and (31) (Seetion 4-6). From them, we may obtain the inereased-valence struetures (32), (33) and (34) for two isomers of F2S2, and for F2SO. For both F2S2 isomers, these increased-valence structures imply that the S-S bonds should have lengths that are similar to those for free S2, and that the S-F bonds are 

Chapter 11 Pauling 3-Electron Bonds and Increased-Valence Structures 

The above theory is also appropriate for CI2SO, whose S-Cl and S-0 bond-lengths of 2.077 A and 1.443 A are respectively longer than the S-Cl single-bond length of 2.014 A for CH3SCI, and shorter than that for free SO. 

In Sections 11-2 to 11-5, atomic orbitals for the increased-valence bonding units 

Y — A 7i-bonds as well as o-bonds in the increased-valence bonding units. For 

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