Abstract
Research interest in non-metallocene olefin polymerization catalysts has led to advances in the synthesis of well-defined paramagnetic organometallic complexes of first-row transition metals, including chromium. Single component polymerization catalysts have been prepared using cationic Cr(III) alkyl complexes with substituted cylopentadienyl or β-diketiminato ancillary ligands. High throughput screening strategies have been developed to assist in the rapid evaluation of structure-activity relationships. Density functional theoretical studies have also proved useful both for rationalizing the observed reactivity of known catalysts and for suggesting new potential catalytic systems.
Keywords: Ziegler-Natta systems, single crystal X-ray diffractometer technology, X-ray diffractometers, polymerization, cationic Cr(IV) amido complexes
Call for Papers in Thematic Issues
Catalytic C-H bond activation as a tool for functionalization of heterocycles
The major topic is the functionalization of heterocycles through catalyzed C-H bond activation. The strategies based on C-H activation not only provide straightforward formation of C-C or C-X bonds but, more importantly, allow for the avoidance of pre-functionalization of one or two of the cross-coupling partners. The beneficial impact of ...read more
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