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Activation of Dinitrogen‐Derived Hafnium Nitrides for Nucleophilic NC Bond Formation with a Terminal Isocyanate
Author(s) -
Semproni Scott P.,
Chirik Paul J.
Publication year - 2013
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201307097
Subject(s) - nucleophile , isocyanate , electrophile , chemistry , cleavage (geology) , bond cleavage , inert , nitride , hafnium , ligand (biochemistry) , medicinal chemistry , polymer chemistry , inorganic chemistry , organic chemistry , catalysis , materials science , zirconium , biochemistry , receptor , composite material , layer (electronics) , fracture (geology) , polyurethane
Better by Hf : Anion coordination to a bridging hafnocene nitride complex, prepared from CO‐induced N 2 cleavage, increases the nucleophilicity of the nitrogen atom, thus promoting additional NC bond formation with a typically inert terminal isocyanate ligand. This cascade sequence allows synthesis of otherwise challenging mono‐substituted ureas using N 2 , CO, and an appropriate electrophile.