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Lewis acid/base addition between Ln(NO 3 ) 3 ·6H 2 O (Ln=Pr, Nd, Sm, Eu, Tb and Lu) and H 2 salen [H 2 salen=N,N′-ethylenebis(salicylideneimine)] gives rise to an array of coordination polymeric structures. Crystal structural analysis reveals that Salen effectively functions as a bridging ligand in these compounds. The size of the lanthanide ions controls the...
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