Magnetic criterion of bond type

These complexes and others of similar character are discussed further in Chapter 5, in which a magnetic criterion for bond type applicable to complexes of the transition elements is described. 

The hybrid bond orbitals discussed in the preceding chapter have been described as having only a small amount of d and / character. The bonds in many molecules and complex ions, especially those involving atoms of the transition elements, can be discussed in a simple way in terms of hybrid orbitals with a large amount of d character (and, in a few cases, / character). These bonds and a magnetic criterion for bond type are discussed in the following sections. 

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