Abstract
The syntheses of two di(1,8-naphtho)-16-crown-4 compounds are described. In the X-ray structure of di(1,8-naphtho)-16-crown-4, the compound crystallizes in the orthorhombic space group Pna21 with four molecules per asymmetric unit. Alkali metal cation selectivities of the ionophores are assessed in solvent polymeric membrane electrodes.
Highlights
Macrocyclic polyethers are well known for their strong interactions with alkali metal and alkaline earth metal cations.[1,2,3,4] Small-ring crown ethers with four oxygens often exhibit selective complexation of Li+
We have reported studies of dibenzo-14-crown-4 1 (Figure 1) and its derivatives with one or two substituents attached to the central carbon atoms of three-carbon bridges.[5,6,7]
We describe the results of the synthetic endeavors, as well as the solid-state structure of 2 and its alkali metal cation selectivity in synthetic polymeric membrane electrodes
Summary
Macrocyclic polyethers (crown ethers) are well known for their strong interactions with alkali metal and alkaline earth metal cations.[1,2,3,4] Small-ring crown ethers with four oxygens (i.e., crown[4] compounds) often exhibit selective complexation of Li+. We describe the results of the synthetic endeavors, as well as the solid-state structure of 2 and its alkali metal cation selectivity in synthetic polymeric membrane electrodes.
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