نتایج جستجو برای: zinc ii

تعداد نتایج: 646644  

2016
Melissa L. Zastrow Robert J. Radford Wen Chyan Charles T. Anderson Daniel Y. Zhang Andrei Loas Thanos Tzounopoulos Stephen J. Lippard

Chelatable, or mobile, forms of zinc play critical signaling roles in numerous biological processes. Elucidating the action of mobile Zn(II) in complex biological environments requires sensitive tools for visualizing, tracking, and manipulating Zn(II) ions. A large toolbox of synthetic photoinduced electron transfer (PET)-based fluorescent Zn(II) sensors are available, but the applicability of ...

2009
Yang Li Qi Shi Alexandra M. Z. Slawin J. Derek Woollins Jinxiang Dong

The title compound, [Zn(C(2)H(8)N(2))(3)](SiF(6)), was synthesized ionothermally using choline chloride-imidazolidone as solvent and template provider. In the crystal structure, the anions and cations are located on special positions of site symmetry 3.2 and show a typical octa-hedral geometry. The Zn(II) ion is coordinated by six N atoms from three ethyl-enediamine mol-ecules. The crystal stru...

2013
Hai-Qing Sun Xin-Qiang Wang Wei-Wei Zhang

The title crystal, [HgZn(NCSe)4] n , a coordination polymer, has a diamond-like network. In the crystal, the metal ions, Zn(2+) and Hg(2+), are both located on fourfold inversion axes and mimic the role of C atoms in the structure of diamond, and the linear seleno-cyanate bridges replace the C-C bonds. The C-N-Zn unit is almost linear and the C-Se-Hg unit is nearly a right angle. Thus, the HgZn...

2008
Richard A. Taylor Henry A. Ellis

The structure of the title compound, poly[di-μ-penta-noato-zinc(II)], [Zn{CH(3)(CH(2))(3)COO}(2)](n), consists of a three-dimensional polymeric layered network with sheets parallel to the (100) plane, in which tetra-hedrally coordinated zinc(II) ions are connected by penta-noate bridges in a syn-anti arrangement. The hydro-carbon chains are in the fully extended all-trans conformation and are a...

2009
Zeinab Khoshtarkib Amin Ebadi Robabeh Alizadeh Roya Ahmadi Vahid Amani

In the mol-ecule of the title compound, [ZnCl(2)(C(13)H(9)N)(2)], the Zn(II) atom is four-coordinated in a distorted tetra-hedral configuration by two N atoms from two phenanthridine ligands and by two terminal Cl atoms. The dihedral angle between the planes of the phenanthridine ring systems is 69.92 (3)°. An intra-molecular C-H⋯Cl inter-action results in the formation of a planar five-membere...

2009
Sven Krieck Helmar Görls Matthias Westerhausen

The title compound, [Zn(C(9)H(11))(2)] or Mes(2)Zn (Mes = mesityl = 2,4,6-trimethyl-phen-yl), crystallizes with a quarter of a mol-ecule in the asymmetric unit. The Zn(II) atom is in a strictly linear environment with a Zn-C bond length of 1.951 (5) Å. Due to the imposed 2/m symmetry, both aromatic rings are coplanar. One of the methyl groups is disordered over two equally occupied positions.

2010
Meng-Jiao Li Jing-Jing Nie Duan-Jun Xu

In the title compound, [ZnCl(2)(C(9)H(7)N)(2)], the Zn(II) cation is coordinated by two Cl(-) anions and two isoquinoline ligands in a distorted ZnCl(2)N(2) tetra-hedral geometry; the two isoquinoline ring systems are twisted with respect to each other at a dihedral angle of 45.72 (8)°. The parallel isoqiunoline ring systems of adjacent mol-ecules are partially overlapped, with the shorter face...

In this study, Response Surface Methodology (RSM) using Central Composite Design (CCD) was employed to optimize the conditions of independent variables (adsorption time and ion solution concentration) for the removal of Zinc (II) and Ag ions from the aqueous solutions using analcime and modified analcime zeolites (Fe-ANA and Ni-ANA) as efficient and low cost adsor...

2009
Yue-Wu Zhang Li-Jun Wang Jian Hou Qing-Fu Zeng

In the title compound, [Zn(C(7)H(11)O(2))(2)(H(2)O)(2)]·H(2)O, the Zn(II) atom (site symmetry ) is four-coordinated by two O atoms from the cyclo-hexa-necarboxyl-ate anions and two O atoms from the water mol-ecules, forming a slightly distorted square-planar coordination. The O atom of the uncoordinated water mol-ecule lies on a crysatllographic twofold rotation axis. In the crystal, the compon...

Background & Objectives: Diabetes mellitus is one of the most common endocrine disorders affecting millions of people worldwide. Here, the effects of co-administration of zinc and vanadium sulfate on blood glucose levels in diabetic animals were studied. Notably, the study on the effects of the separation of zinc and vanadium has been done previously. Materials &methods: Moderate diabetic hype...

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