A gallium(III) Schiff base-curcumin complex that binds to amyloid-β plaques.

The reactions of Al(III), Ga(III) and In(III) nitrates with 2-quinaldic acid (qaH) afforded [Al2(OH)2(qa)4]·2H2O (1), [Ga(qa)2(H2O)2]NO3 (2) and [In(qa)2(NO3)(H2O)] (3), respectively, in high yields. The crystal structures of 1, 2 and 3 have been determined by single-crystal X-ray crystallography. The structure of 1 features a di-hydroxo bridged [Al2(μ-OH)2]4+ dimer in which each Al(III) is further ligated by two bidentate chelate qa− ligands. Complexes 2 and 3 are mononuclear with the M(III) ions in octahedral environments surrounded by two bidentate chelate qa− and two H2O in 2 or one H2O and a terminal NO3− in 3. Characteristic IR as well as thermal analysis and solid-state fluorescence are discussed.

Group III quinaldates: synthesis, structure and photoluminescence

Imino derivatives of salicylic aldehyde and a N-vinylpyrrolidone/N-vinylamine containing 15 mol % N-vinyl salicylidenimine were synthesized. Water-soluble metal—polymer complexes with a gallium content of 5 mol % were obtained by the interaction of imino derivatives with gallium(III) chloride. The structure and composition of the metal—polymer complex are confirmed by electron, vibrational, atomic emission spectroscopy with inductively coupled plasma, and by nuclear magnetic resonance spectroscopy.

Water-Soluble Metal—Polymer Gallium Complexes Based on Imino Derivatives of an N-Vinylpyrrolidone/N-Vinylamine Copolymer

Influences of polarizability effect of alkyl group and homoring competition effect of substituents on the fluorescence emission spectra of salen-type Schiff bases

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Crystal structure of [6,6′-((1E,1′E)-(propane-1,3- diylbis(azaneylylidene))bis(methaneylylidene)) bis(3-chlorophenol)-κ 4 N,N′,O,O′] copper(II), C17H14Cl2CuN2O2

Sotiria Tella

Papers

Gallium(III) complexes based on N , N ′-bis(salicylidene)propane-1,3-diamine and its derivatives