Abstract
AbstractBuilding blocks with multiple components are promising for the synthesis of complex molecular assemblies, but are rarely available. Herein, we report a modification procedure for a multi‐component building block [Ln3Ti(HSA)6(SA)4(H2O)]−({Ln3Ti‐SA}, H2SA=salicylic acid, Ln=Eu/Gd) to form new building blocks {Ln3Tix‐MSA} (H2MSA=5‐methoxysalicylic acid,x=1, 2, 3) by constructing [Ti(MSA)3]2−units. The obtained {Ln3Tix‐MSA} can further assemble into a chiralLn22Ti14ring with the formulae [Eu22Ti14(MSA)48(HMSA)22(CH3COO)4(H2O)10(iPrOH)] and [Gd22Ti14(MSA)46(HMSA)26(CH3COO)4(H2O)8]. Parallel experiments without Ti4+result in linear Ln chains. Detailed analysis shows that the [Ti(MSA)4]4−unit makes the originally variable Ln chains become available building blocks and the modified [Ti(MSA)3]2−further triggers interesting chiral‐sorting behavior. Finally, the electronic adsorption and magneto‐optic responses of these molecular rings are investigated.
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