In the title compound, [Zn(4)(C(11)H(9)N(2)O(2))(4)(C(7)H(5)O(2))(4)]·2(CH(3))(2)CO·CH(3)OH, the tetra-nuclear mol-ecule lies on a fourfold inversion axis. Zn(II) ions and μ(3)-O atoms in the cubane core occupy alternating vertices, forming two inter-penetrating tetra-hedra. Each Zn(II) ion is further coordinated by two N atoms from two different (py)(2)C(OH)O ligands (py is pyrid-yl) and one O...

A series of four homoleptic cationic ZnII complexes (Zn1–Zn4) coordinated by two substituted bis-imidazo[1,2-a]pyridine (ImPy) ligands (L1–L4) is herein presented. The are functionalized with either electron acceptor or donor functional groups at the C6 positions ImPy moieties. In DMF solution, all display intense near-UV to blue emission (λem = 379–450 nm) high photoluminescence quantum yield ...

Interactions of neutral pyridine ligands and anionic benzoate with the metalloporphyrin walls M6L3 nanocages (M = [(tmeda)Pt]2+, L tetra(3-pyridyl)porphyrin-M′, M′ CoII, Co3-1; ZnII, Zn3-1) were evaluated in CD3CN. The binding to simple tetra(N-methyl-3-pyridinium)porphyrin-M′ complexes Co-2 Zn-2 was also evaluated. It found that bind generally similar strength monomeric porphyrins as outer fac...

Purple acid phosphatases comprise a family of binuclear metal-containing acid hydrolases, representatives of which have been found in animals, plants, and fungi. The goal of this study was to characterize purple acid phosphatases from sweet potato tubers and soybean seeds and to establish their relationship with the only well-characterized plant purple acid phosphatase, the FeIII-ZnII-containin...

We present high-resolution UES spectra of the quasar PHL 957 obtained for studying the foreground Damped Lyα galaxy at z=2.309. Measurements of absorption lines lead to accurate abundance determinations of Fe, S and N which complement measurements of Zn, Cr and Ni already available for this system. We find [Fe/H]=−2.0± 0.1, [S/H]=−1.54± 0.06 and [N/H]=−2.76± 0.07. The ratio [Fe/Zn]=−0.44 provid...