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D/A‐metallocenes: the new dimension in catalyst design
Author(s) -
Starzewski Aleksander Ostoja
Publication year - 2004
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200450906
Subject(s) - catalysis , bridging (networking) , acceptor , lewis acids and bases , modular design , catalytic cycle , materials science , combinatorial chemistry , chemistry , nanotechnology , organic chemistry , physics , computer science , quantum mechanics , computer network , operating system
D/A metallocenes constitute a novel unique class of catalysts, in that they are able to express structural information within the elementary steps of the catalytic cycle out of bridged as well as out of unbridged states due to the coexistence of donor (D) and acceptor (A) atoms in complex sandwich structures. Highly polarized transannular bridging interactions as well as Lewis basic and Lewis acidic functionalities in unbridged states are the prerequisites which define a modular highly flexible catalyst system with outstanding options to tailor materials and processes.