Abstract
The aqueous solution chemistry of Al(III) is an important subject in the fields of environmental chemistry, geochemistry and coordination chemistry. However, aluminum oxo clusters were generally isolated by the one-step synthesis method. In this paper, we developed a stepwise assembly synthesis strategy and successfully prepared two heterometallic aluminum oxo clusters. [Al4(L)4(Cat)2]·2[Zn(Im)4]·2Im (AlOC-121, H3L = 2,3-dihydroxybenzoic acid, Cat = catechol Im = imidazole) and [Al4(L)4(Cat)2]·2[Fe(Im)6]·2Im (AlOC-122). Single crystal structure analysis shows that they are unprecedented structure types, where aluminum oxo cluster precursor, metal complexes and guests co-crystallizing in one structure. These compounds were fully characterized and magnetic properties were also studied.
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