Z. Naturforsch. 51 b, 333-337 (1996); eingegangen am 31. August 1995 Zinc, Arsenic, Oxide, Crystal Structure Single crystals of two forms of zinc orthoarsenate (a-Zn3(As04)2 (I) and /3-Zn3(As04)2 (II)) have been prepared by flux techniques. Both compounds crystallize monoclinically, space groups (I): Cih-P2l/c, (II): Cih-P21/n, with the lattice parameters (I): a = 6.306(2), b = 8.652(2), c = 'o...

Zinc phosphate (Zn3(PO4)2) nanoparticles were successfully prepared by precipitation method using zinc acetate and Phosphoric acid as the zinc and phosphate sources. The synthesized Zn3(PO4)2 nanoparticles were characterized by X-ray diffraction, Scanning electron microscope and Transmission electron microscope in order to confirm the phase purity and morphology of the sample. Zn3(PO4)2 nanopar...

The title compound, (C3H12N2)[Zn3(SeO3)4].2H2O, is built up from organic cations, {[Zn3(SeO3)4]2-}n macroanionic sheets and water molecules. The inorganic component of the structure is notable for incorporating both octahedrally and tetrahedrally coordinated Zn atoms. A network of N-H...O and O-H...O hydrogen bonds helps to establish the layered structure. The six-coordinate Zn atom has site sy...

Three mononuclear 2-picolylamine-containing zinc(III) complexes viz [(2-PA)2ZnCl]2(ZnCl4)] (Zn1), [(2-PA)2Zn(H2O)](NO3)2] (Zn2) and [Zn(2-PA)2(OH)]NO3] (Zn3) were synthesized fully characterized. Spectral X-ray structural characteristics showed that the Zn1 complex has a square-pyramidal coordination environment around zinc(II) core. The hydroxide Zn3 was non-covalently functionalized with few ...

Bacteria respond dynamically to the changes in zinc availability. Repression by the Bacillus subtilis transcription factor Zur requires Zn(II), which binds with negative cooperativity to two regulatory sites per dimer to form, sequentially, Zur2:Zn3 and Zur2:Zn4 forms of the repressor. Here we show that, as cells transition from zinc sufficiency to deficiency, operons regulated by Zur are derep...

The solution-mediated synthesis and crystal structure of 1,1-di-methyl-hydrazinium tetra-phoshonoatotrizincate, (C2H9N2)2[Zn3(HPO3)4], are described. The anionic [Zn3(HPO3)4]2- framework is built up from alternating ZnO4 tetra-hedra and HPO3 pseudo-pyramids to generate a three-dimensional 4,3-net encapsulating the C2H9N2+ cations. The organic cations, which are protonated at their central N ato...

Understanding nanomaterial transformations within wastewater treatment plants is an important step to better predict their potential impact on the environment. Here, spatially resolved, in situ nano-X-ray fluorescence microscopy applied directly observe nanometer-scale dissolution, morphological, and chemical evolution of individual aggregated ZnO nanorods complex “real-world” conditions: influ...

Abstract—We investigated ecotoxicity and performed experiment for removing ZnO nanoparticles in water. Short term exposure of hatching test using fertilized eggs (O. latipes) showed deformity in 5ppm of ZnO nanoparticles solution. And in 10ppm ZnO nanoparticles solution delayed hatching was observed. Hereine, chemical precipitation method was suggested for removing ZnO nanoparticles in water. T...

Metal organic frameworks (MOFs) are considered an interesting option for hydrogen storage. These materials show an exceptional H2 uptake. Here, Zn3(BTC)2 as MOF was synthesized with a solvothermal method. The phase stability and microstructure of the Zn3(BTC)2 was characterized in terms of their properties and structures, using a number of analytical techniques including FT-IR, XRD, SEM, BET ...