Organometallic derivatives of transition elements

For these derivatives, coordination nomenclature is generally preferred. The procedures and devices have been dealt with in Chapter 4, Section 4.4 (p. 51), and the reader is referred there and to the Nomenclature of Inorganic Chemistry for more details. 

This discussion is based on the 1991 edition of the Compendium of Macromolecular Nomenclature and several more recent recommendations of the lUPAC Commission on Macromolecular Nomenclature.  

Commission on Macromolecular Nomenclature, Compendium of Macromolecular Nomenclature. Blackwell Scientific Publications, Oxford (1991). 

Examples of a double-strand polymer are a ladder polymer in which macromolecules consist of an uninterrupted sequence of rings with adjacent rings having two or more atoms in common, and a spiro polymer in which macromolecules consist of an uninterrupted sequence of rings, with adjacent rings having only one atom in common. 

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