The macrocyclic tetra-amino-tetra-phenolate ligand L4–, from 2, obtained by borohydride reduction of the corresponding tetra-Schiff's base macrocycle 1, gives a tetra-zinc derivative, [LZn4(OH)(MeCO2)3(MeOH)]·1.5MeOH, Whose X-ray crystal structure is described.
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Grannas et al. (1990) studied this question.
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