Redox-triggered interconversion between piperidine chair conformations in a Cu(I/II) complex.
A redox-induced six-membered ring chair-chair conformational interconversion in a copper-coordinated trans-piperidine tripodal ligand is demonstrated. Each group of the 1,2,3-substituted ring can potentially ligate the metal; two equatorial groups ligate the metal in the Cu(I) state leaving a disassociated, axial group. However, all three groups (two axial and one equatorial) ligate the metal in the Cu(II) state. Exciton-coupled circular dichroism (ECCD) and 2D NMR were used to characterize the structures.
Zhang
Jing
J
Department of Chemistry, New York University, New York, NY 10003, USA.
Canary
James W
JW
D003300:Copper / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D010084:Oxidation-Reduction; D010880:Piperidines / Q000737:chemistry*
D010880:Piperidines; D003300:Copper