Enhanced silver ion binding to a rigid bisarene molecular cleft with formation of nonpolar pleated sheets through non-ionic intermolecular forces.
Silver ion complexation to bisarene ligands is enhanced by providing a conformationally rigid molecular cleft in the (Z)-acenaphthylene dimer 1. NMR titrations were used to determine complexation constants K for a series of ligands in tetrahydrofuran solution, with K = 4.9 M(-1) for the Z dimer 1 and 0.4 M(-1) for the E dimer 2. Higher values of K were observed in CDCl(3)/CD(3)OD 9:1 with K = 38 M(-1) for 1 and K = 4.1 M(-1) for 2. In the solid state, isolated clusters of [1 x (AgCF(3)SO(3))(2)](2) form a novel, pleated-sheet motif based on non-ionic interactions between clusters.
Gogoll
Adolf
A
Department of Biochemistry and Organic Chemistry, Uppsala University, Box 576, S-75123 Uppsala, Sweden.
Polavarapu
Prasad
P
Grennberg
Helena
H
D019281:Dimerization; D007477:Ions; D008024:Ligands; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D011084:Polycyclic Aromatic Hydrocarbons / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*
D007477:Ions; D008024:Ligands; D011084:Polycyclic Aromatic Hydrocarbons; D012834:Silver