Binary copolymerization according to other models

Expressions for predicting monomer sequence distribution with higher order models and for monomer complex and other models have also been proposed. 

There are at least two additional complications that need to be considered when attempting to predict sequence distribution or measure reactivity on the basis of sequence data  

Copolymers involving only monosubslihited monomers are usually assumed lo have random tacticity (i.e. oAr = = 0.5). 

The full picture of the factors affecting copolymer sequence distribution and their relative importance still needs lo be filled in. 

Six reactivity ratios are then required to describe the system. 

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