Cyclometallated complexes are well-known and have found many applications. This article provides a short review on the progress made in synthesis application to catalysis of cyclometallated half-sandwich Cp*Ir(III) (Cp*: pentamethylcyclopentadienyl) since 2017. Covered iridacycles featuring conventional C,N chelates less common metallocene carbene-derived C,C ligands. is followed by an overview...

Single-site polymerization catalysts enable exquisite control over alkene polymerization reactions to produce new materials with unique properties. Knowledge of catalyst speciation and fundamental kinetics are essential for full mechanistic understanding of zirconocene-catalyzed alkene polymerization. Currently the effect of activators on fundamental polymerization steps is not understood. Prog...

The quest for alternative drugs with respect to the well-known cis-platin and its derivatives, which are still used in more than 50% of the treatment regimens for patients suffering from cancer, is highly needed. In this context, organometallic compounds, which are defined as metal complexes containing at least one direct covalent metal-carbon bond, have recently been found to be promising anti...

The effect of Mw on the non-isothermal crystallization kinetics of metallocene linear polyethylene (m-PE) was studied using modulated differential scanning calorimetry. Six linear m-PEs of molecular weights in the range 122-934 kg/mol were prepared by gas phase polymerization. The cooling rate was varied in the range 2–20C/min and it has significantly affected the crystallization behavior. The ...

A novel mechanism for the polymerization of butadiene by cationic gadolinium metallocene in presence excess Al(iBu)3 is presented. The absence an initial Gd-alkyl bond this reaction system precludes conventional coordinative chain transfer (CCTP). Density functional theory (DFT) analysis indicates a which Gd assists insertion into one Al–C bonds Al(iBu)3, explaining 1,4-cis selectivity unique t...

The thermal and photooxidative behaviour of polyethylenes of different manufacturing histories (linear low, metallocene and high density) have been investigated by FTIR spectroscopy and the data related to the chemiluminescence (CL) and thermal analysis of the polymers. The CL intensity and activation energies for thermal decomposition were found to be dependent on the rates of oxidation of the...

By introducing low-entanglement UHMWPE, the mechanical properties of polyolefins are improved to varying degrees. For polypropylene, lack interaction between UHMWPE and polypropylene results in an unsatisfactory reinforcement effect, disentangled state makes it easier for particles form defects driven by a chain explosion. In contrast, regarding polyethylene elastomer containing ethylene segmen...