Heterochiral triangulo nickel complex as evidence of a large positive nonlinear effect in catalysis.
A novel triangulo complex was generated by heating, in vacuo, a racemic C2-symmetric octahedral nickel(II) diamine complex. The trinuclear species was identified by single-crystal X-ray diffraction, which revealed a 2:1 ligand stereochemistry relationship in each unit. This solid-state structure evidences the hypothesis that a 1:2 stereochemical relationship lies at the heart of the strong positive nonlinear effect observed in enecarbamate aldol-like reactions catalyzed by nickel(II) diamine complexes.
Fossey
John S
JS
Department of Chemistry, University of Bath, Bath BA2 7AY, England. j.fossey@bath.ac.uk
Matsubara
Ryosuke
R
Kiyohara
Hiroshi
H
Kobayashi
Shu
S
D002384:Catalysis; D018360:Crystallography, X-Ray; D008958:Models, Molecular; D009532:Nickel / Q000737:chemistry*; D013237:Stereoisomerism
D009532:Nickel