Drastic effects of the second coordination sphere on neutral vs. anionic guest binding to a biomimetic Cu(II) center embedded in a calix[6]aza-cryptand.
A calix[6]arene capped by a tmpa unit provides Cu(ii) funnel complexes that, for the first time, accept not only neutral guest ligands but also anionic ones such as a hydroxide, which is due to a small conformational change in the calixarene cone.
Izzet
Guillaume
G
Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR CNRS 8601, Université René Descartes, 45 rue des Saints-Pères, 75270 Paris Cedex 06, France.
Zeng
Xianshun
X
Akdas
Huriye
H
Marrot
Jérôme
J
Reinaud
Olivia
O
D032701:Biomimetics; D047250:Calixarenes / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D003460:Crystallization; D004578:Electron Spin Resonance Spectroscopy; D004988:Ethers, Cyclic / Q000737:chemistry*; D007202:Indicators and Reagents; D008958:Models, Molecular; D008968:Molecular Conformation; D013056:Spectrophotometry, Ultraviolet; D019265:Spectroscopy, Near-Infrared; D013329:Structure-Activity Relationship; D014961:X-Ray Diffraction
D004988:Ethers, Cyclic; D007202:Indicators and Reagents; C518926:calix(6)aza-cryptand; D047250:Calixarenes; D003300:Copper