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۱X–ray Crystal Structure of new five Coordinated Zinc(I1) complex {[Zn(DADMBTZ)3](N03)2.CI–130H
نویسنده(ها): ،
اطلاعات انتشار: چهاردهمین همایش بلور شناسی و کانی شناسی ایران، سال
تعداد صفحات: ۴
The new synthesized ligand {DADMBTZ = 2,2'–diamino–5,s'–dimethyl–4,4'– bithiazole). which is reported in this text, is used for preparing the crystals of new complex of Zn(lI), [Zn(DADMBTZ)3](N03)2.CH30H. The characterization was 13 done by IR, 'H, C NMR spectroscopy. elemental analysis and single crystal X–ray determination. In reaction with DADMBTZ, zinc(1I) show different characterization. The versatility of this ligand, involving the change of its configuration, suggests that different factors. such as electronic effects, play essential roles in determining the formation of the metal complexes and their related biological properties. The nitrogen atoms of NH2 group of the ligand are not coordinated. The Zinc compound to have a greater tendency to stay as a tetra –coordinated complex. In this complex. one of the DADMBTZ ligands act as a monodentate ligand to form the five coordinated Zn(I1) complex, giving a distorted trigonal bipyramidal geometry around the metal. This makes 2–D networks via N–H 0 , 0–H 0 and N–H N hydrogen bonds.<\div>

۲One–pot synthesis of cobalt sulfide nanostructure via solid state method without any solvent – A green chemistry approach
نویسنده(ها): ، ،
اطلاعات انتشار: اولین همایش ملی نانو فناوری و شیمی سبز، سال
تعداد صفحات: ۵
Cobalt sulfide nanostructure was synthesized by calcination of a new Co(II) bithiazole complex by the solid state reaction at moderately elevated temperature under argon atmosphere. The thermal stability of new cobalt bithiazole complex was studied by thermal gravimetric (TG) and differential thermal analyses (DTA). The nanostructure products was characterized by scanning electron microscopy (SEM), X–ray powder diffraction (XRD) and Fourier transform infrared (FT–IR) spectroscopy.<\div>

۳Synthesis of ZnO\Bi(2)O(3) nanocomposite for efficient degradation of organic dye pollutants under visible–light
اطلاعات انتشار: اولین همایش ملی نانو فناوری و شیمی سبز، سال
تعداد صفحات: ۴
In the present work, ZnO\Bi(2)O(3) composite has been successfully synthesized using the precipitation method. The obtained sample was characterized by X–ray diffraction (XRD), Fourier transform infrared spectroscopy (FT–IR) and emission scanning electron microscopy (FE–SEM). The FE–SEM micrograph demonstrated that the particle size of the surface of nanocomposite was about 43 nm. The photocatalytic performance of ZnO\Bi(2)O(3) composite was evaluated by decolorization of methylene blue and congo red dye solutions under UV–Vis and visible irradiation. It was found that about 95% of the congored solution was decolored over the nanocomposite after 60 min under visible light. Also, the reusability of prepared nanocomposite was investigated through successive 4 cycles of experiments. Therefore, the synthesized ZnO\Bi(2)O(3) nanocomposite is a suitable photocatalyst to use under the visible light.<\div>

۴Structural Determination of Mixed–Ligands Lead(II) Complex with 2,2'–diamino–5,5'–dimethyl–4,4'–bithiazole using X–ray crystallography
اطلاعات انتشار: پانزدهمین همایش انجمن بلورشناسی و کانی شناسی ایران، سال
تعداد صفحات: ۴
The new synthesized ligand (DADMBTZ =2,2'–diamino–5,5'–dimethyl–4,4'–bithiazole) is used for preparing new 1:2 adduct of [Pb(DADMBTZ)2(NO3)( CH3COO)].H2Oomplex. The characterization was done by IR, 1H, 13C NMR spectroscopy, elemental analysis and single crystal X–ray determination. The coordination number of Pb incomplex is seven (four by the chelating DADMBTZ and two oxygen atoms of the acetate and one oxygen atom of the nitrate anions). The two ligands act as a bidentateligand which leads to the five–membered chelate rings. The nitrogen atoms of NH2group of the ligand are not coordinated. The coordination geometry of complex show a gap around the Pb(II) ion, occupied possibly by a stereoactive lone pair of electronson lead(II) and coordination around the lead atoms is hemidirected with a significant gap trans to chelating DADMBTZ ligands, nitrate and acetate anions. Complex makes 3–D networks via N–H…O and N–H…N, O–H…O hydrogen bonds.<\div>

۵Ultrasonic–assisted synthesis of a novel nano–structured Hg(II) coordination polymers
اطلاعات انتشار: دومین کنفرانس بین المللی یافته های نوین پژوهشی در شیمی و مهندسی شیمی، سال
تعداد صفحات: ۴
A new Hg(II) coordination polymers containing 4,4'–bithiazole ligand was synthesized by conventional and sonochemical methods, characterized by by scanning electron microscopy, X–ray powder diffraction, spectroscopic techniques (FT–IR and elemental analysis), and its X–ray crystallographic structures was determined. The crystal packing and supramolecular feature of this coordination polymer was studied using geometrical analysis. The thermal stability of compound both its bulk and nano–size has been studied by thermal gravimetric (TG) and differential thermal (DTA) analyses and compared each other. This study may provide further insight into discovering the role of weak intermolecular interactions in the context of nano–supramolecular assembly.<\div>

۶Synthesis and Characterization of Ag2O Nanoparticles via Direct Decomposition of an Organic–inorganic Compound
اطلاعات انتشار: دومین کنفرانس بین المللی یافته های نوین پژوهشی در شیمی و مهندسی شیمی، سال
تعداد صفحات: ۴
An organic–inorganic compound of Ag(I) 1 containing bithiazole ligand was synthesized and characterized by spectroscopic techniques (FT–IR), 1H, 13C NMR spectroscopy and elemental analysis. Its X–ray crystallographic structure was determined. The crystal packing of this Organic–inorganic Compound was studied using geometrical analysis. The thermal stability of compound 1 has been studied by thermal gravimetric (TG) and differential thermal (DTA) analyses. The Ag2O nanoparticles has been prepared using Organic–inorganic Compound of Ag(I) 1 as precursor via thermal decomposition. As–prepared Ag2O nanoparticles were characterized by X–ray diffraction measurements (XRD), scanning electron microscopy (SEM). This study demonstrates that bithiazole complexes may be suitable precursors for preparation of nanoscale materials.<\div>
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