Statistics of placements

Chain propagation If k = rates of butadiene insertion, statistics of placement = f ( kj / )... 

The name chronoselectivity has been coined to describe this phenomenon, which represents the first example of a synthetic catalytic code indeed, the complex simultaneously controls the regioselectivity, the stereoselectivity, and different statistics of placement (as a function of time) of the chain formation, in a non-thermodynamic manner. A preliminary mechanistic explanation has been suggested (Fig. 26), based on relative insertion and dynamic rearrangement rates in the complex (see also [6]). 

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