Abstract
AbstractThe ligands 1‐H6 and 2‐H6 are prepared by condensation of the triangular triamines 5 and 2,3‐dihydroxybenzoic acid hydrazide 7. The ligands form container‐type tetrahedral coordination compounds Mx [(1 or 2)4M′4] (M = Li, Na, K; M′ = Ti, x = 8; M′ = Ga, x = 12). The complexes are characterized by NMR spectroscopy and ESI mass spectrometry. Despite the relatively labile acyl hydrazone unit, the complexes show high stability in water. Ligand 3‐H6 is prepared from the trisacyl hydrazide 8 and 2,3‐dihydroxybenzaldehyde 9 but does not form well‐defined coordination compounds with gallium(III) or titanium(IV) ions.
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