Heterochain with covalent bonds

Heterochain Polymers with Covalent Bonds between Metals and Another Element 281... 

The tendency to form iso- or heterochains varies for different elements (see Section 2.2). Carbon is particularly prone to self-bonding or to bonding with the so-called heteroatoms of organic chemistry. The predominance of such organic chains with covalent bonds led in the past to the conception that macromolecular science is a small part of organic chemistry. 

Type III The metal is part of a polymer chain or network. This type considers homochain or heterochain polymers with covalent bonds to the metal, coordinative bonds between metal ions and a polyfunctional ligand (coordination polymers), Ti-complexes in the main chain with a metal, cofacially stacked polymer metal complexes and different types (polycatenanes, polyrotaxanes, dendrimers with metals) (Figure 3). 

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