Elementanes with repeating diads

If such compounds actually contain the typical functional groups of organic chemistry, the customary ranking order of functional compound classes (see Table 7) within the limits of substitutive or conjunctive 

Reflecting the significance of coordination nomenclature, names focusing on the metal(loid) atom are also frequently used here e.g. dimethyl-[2,6-bis(dimethylaminomethyl)phenyl]boron for the last example above. 

Special rules are valid for chains and rings assembled from regularly ordered diads of two different element types. Chains here must end with 

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