Syndiospecific polymerization of styrene by Half-titanocene catalysts

Syndiotactic polystyrene has attracted much interest in scientific and industrial research after its first synthesis in 1985 and has led to a fast commercialization of this polymer. The catalyst systems used for this coordination polymerization of styrene are a key point in this development to provide high polymerization activities and syndiotacticities of the polymers obtained. In this article we review and highlight recent development of homogeneous and heterogeneous transition metal complexes for syndiospecific polymerization of styrene. It includes the polymerization activity of the catalysts itself, the syndiotacticity and other properties of the polymers received with these catalysts as well as the discussion of the relationships between structure and properties