ChemInform Abstract: Syntheses of New 15-Membered and 16-Membered Macrocyclic Ligands with Three Pendant Acetato Groups and the Structures of the Gadolinium(III) Complexes.
Abstract
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ChemInform Abstract
The condensation of the dianhydride (I) with a diamine represents a versatile method for the preparation of the title macrocycles (III). Their metal chelates are highly sensitive to the favorable conformation of the ligands. Thus, Gd(III) forms different non-ionic complexes. Whereas (IIIa) yields a binuclear complex, (IIIb) gives a mononuclear complex with a coordinated water molecule. The structural differences between these two complexes result in different physical properties.
