Guanidinium binding modulates guest exchange within an [M4L6] capsule.
Take it slow! A metal-organic container molecule has been shown to bind guanidinium cations (blue) between the sulfonate groups on its periphery, as well as accommodating guests such as cyclopentane and cyclohexane in its internal cavity (red). Kinetic studies on the system demonstrated a linear relationship between the amount of bound guanidinium ions and the rate of guest exchange.
University of Cambridge, Department of Chemistry, Cambridge, UK.
Salvatore
S
Zarra
Maarten M J
MM
Smulders
Quentin
Q
Lefebvre
Jack K
JK
Clegg
Jonathan R
JR
Nitschke
D003510:Cyclohexanes / Q000737:chemistry / Q000378:metabolism*; D003517:Cyclopentanes / Q000737:chemistry / Q000378:metabolism*; D019791:Guanidine / Q000737:chemistry / Q000378:metabolism*; D007700:Kinetics; D009682:Magnetic Resonance Spectroscopy; D008670:Metals / Q000737:chemistry / Q000378:metabolism*; D008958:Models, Molecular; D015394:Molecular Structure
D003510:Cyclohexanes; D003517:Cyclopentanes; D008670:Metals; C506365:Cyclohexane; D019791:Guanidine