D. H. A. L. Anselmo

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The assembly formation of Zn cluster compounds comprising pyridinealcohol ligands is described and their solution and solid state features have been determined using NMR spectroscopy and X-ray diffraction. The di-Zn complex 5 and tetra-Zn complex 7 may serve as accessible structural models for the active site of various multinuclear Zn-containing(More)
A series of trinuclear, triptycene-based metallosalphen complexes (M = Zn, Ni) have been prepared incorporating various peripheral substituents. The introduction of Zn metal centres into these triptycene based salphen ligands gives rise to cross-linking between different triptycene molecules through μ-phenoxo bridges between the Zn metal centres, and(More)
Tetra-Schiff bases derived from (chiral) bis-salphen ligand scaffolds furnish, upon metalation with appropriate metal reagents, their multinuclear structures with associated Zn(OAc)(2) or Zn(OH)(2) fragments. The tendency of retaining these salts was investigated using four different (chiral) bis-salphen scaffolds. The presence of the additional Zn ions was(More)
The dispersion relation and localization profile of confined optical phonon modes propagating in quasiperiodic Fibonacci nitride semiconductor structures are analyzed through a transfer-matrix approach. This substitutional sequence is described in terms of a series of generations that obey peculiar recursion relations and/or inflation rules. We present a(More)
A series of assemblies comprising hydroxo-bridged dinuclear Zn(salphen) structures have been isolated and fully characterized in solution and by X-ray crystallography. The solution stability of these assembled species was evaluated in polar media, in the presence of excess of building blocks and competing ligands. The catalytic potential of this type of(More)
The use of the commercially available, bifunctional phosphine 1,3,5-triaza-7-phosphaadamantane (abbreviated as PN3) in conjunction with a series of Zn(salphen) complexes leads to sterically encumbered phosphine ligands as a result of (reversible) coordinative Zn-N interactions. The solid state and solution phase behaviour of these supramolecular ligand(More)
The interaction of native calf thymus DNA with the Zn(II) and Cu(II) complexes of 5-triethyl ammonium methyl salicylidene orto-phenylendiimine (ZnL(2+) and CuL(2+)), in 1 mM Tris-HCl aqueous solutions at neutral pH, has been monitored as a function of the metal complex-DNA molar ratio by UV absorption spectrophotometry, circular dichroism (CD) and(More)
The self-assembly features of a series of (non)symmetrical Zn(salphen) complexes have been studied in detail by X-ray crystallography, NMR and UV-vis techniques. The combined data demonstrate that the stability of these dimeric assemblies and the relative position of each monomeric unit within the dinuclear structure depend on the location and combination(More)
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