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Unexpected Formation of a Molecular Tetraalkyl Nickel Complex from an Olefin/Nickel(0) System
Author(s) -
Klein HansFriedrich,
Kraikivskii Peter
Publication year - 2009
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.200805499
Subject(s) - nickel , olefin fiber , steric effects , chemistry , ligand (biochemistry) , diamagnetism , alkyl , stereochemistry , crystallography , photochemistry , computational chemistry , catalysis , organic chemistry , physics , biochemistry , receptor , quantum mechanics , magnetic field
Four thought : The first nickel(IV) complex that contains only alkyl ligands (see picture) was serendipitously obtained in a reaction between a nickel(0) species and a strained diolefin. The twisted conformation of the ligand provides the necessary steric shielding to stabilize the complex. DFT calculations show this conformation to be the ground state and NMR spectra indicate the diamagnetic nature and high oxidation state of the nickel center.