Binding data in methanol are given below for a series of interactions between crown ethers 3-6...

 

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Binding data in methanol are given below for a series of interactions between crown ethers 3-6 and cations. 3 5 6 Log K (Li*) = 0.5 Log K (Na*) = 1.73 Log K (K*) = 0.86 Log K (Li") = 1.42 Log K (Na*) = 3.42 Log K (K*) = 3.38 Log K (Na*) = 4.32 Log K (K*) = 6.10 Log K (Cs*) = 4.62 Log K (K*) = 4.41 Log K (Cs*) = 5.02 (i) suggest an explanation for the selectivities observed for the binding of 18-crown-6 5 towards cations (ii) suggest an explanation as to why the binding of cations to the different sized crown ethers might not fully follow the predicted trend Binding data in methanol are given below for a series of interactions between crown ethers 3-6 and cations. 3 5 6 Log K (Li*) = 0.5 Log K (Na*) = 1.73 Log K (K*) = 0.86 Log K (Li") = 1.42 Log K (Na*) = 3.42 Log K (K*) = 3.38 Log K (Na*) = 4.32 Log K (K*) = 6.10 Log K (Cs*) = 4.62 Log K (K*) = 4.41 Log K (Cs*) = 5.02 (i) suggest an explanation for the selectivities observed for the binding of 18-crown-6 5 towards cations (ii) suggest an explanation as to why the binding of cations to the different sized crown ethers might not fully follow the predicted trend