Mercury−Chalcogenide Clusters: Synthesis and Structure of [Hg10Te4(SePh)12(PPhnPr2)4], [Hg10Te4(TePh)12(PPhnPr2)4] and [Hg34Te16(SePh)36(PPhnPr2)4]

Eichhöfer, Andreas; Deglmann, Peter

doi:10.1002/ejic.200300447

Cited by 39 publications

(19 citation statements)

References 26 publications

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“…. [12] The additional 2-3 copper atoms beyond Cu 70 in this series result in little overall structural change of the common trigonal prismatic Cu 70 Se 35 core, these additions occurring at its corners. The 1.6 Â 1.6 Â 0.9 nm 3 Cu 70 Se 35 framework is also preserved even with varying the number and types of phosphine ligands covering the surface.…”

Section: Research Newsmentioning

confidence: 97%

Metal Chalcogenide Clusters on the Border between Molecules and Materials

2009

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The preparative and materials chemistry of high nuclearity transition metal chalcogenide nanoclusters has been in the focus of our research for many years. These polynuclear metal compounds possess rich photophysical properties and can be understood as intermediates between mononuclear complexes and binary bulk phases. Based on our previous results we discuss herein recent advances in three different areas of cluster research. In the field of copper selenide clusters we present the synthesis of monodisperse, nanostructured α‐Cu2Se via the thermolysis of well‐defined cluster compounds as well as our approaches in the synthesis of functionalized clusters. In case of silver chalcogenides we established a strategy to synthesis cluster compounds containing several hundreds of silver atoms with the nanoclusters arranging in a closely packed crystal lattice. Finally the presented chalcogenide clusters of the group 12 metals (Zn, Cd, Hg) can be taken as model compounds for corresponding nanoparticles as even the smallest of frameworks display a clear structural relationship to the bulk materials.

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Section: Research Newsmentioning

confidence: 97%

Metal Chalcogenide Clusters on the Border between Molecules and Materials

2009

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“…The alloy Cd 1-x Hg x Te, for example, is a well known material in long-wavelength IR detector technologies, and HgTe nanoparticles have been proposed as potential amplifiers in telecommunication devices. [9][10][11][12] Some authors have proposed alternative ways to increase the research on metal-chalcogenide clusters. Steigerwald and co-workers [13][14][15][16] have demonstrated the utility of trialkylphosphine tellurides (R 3 P=Te) as a source of soluble "tellurium(0)" to form numerous metaltelluride polynuclear complexes.…”

Section: Introductionmentioning

confidence: 99%

“…21, No. 7, 2010 cluster compounds and their conversion have been studied recently by Eichhöfer and Deglmann 12 and previously by other authors, [13][14][15][16][17][18][19][20][21] in order to extend optical investigation on IIb-VI cluster molecules.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and crystal structure of chalcogenide cluster compound

Tirloni

Burrow

Villetti

et al. 2010

J. Braz. Chem. Soc.

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2 ], (2), were prepared by reaction of Hg(SePh) 2 , HgX 2 (X = Cl, Br) and tricyclohexylphosphine, PCy 3 , in dimethylformamide. The reaction of Hg(TePh) 2 with HgBr 2 in tetrahydrofuran using triphenylphosphine or 2,2'-bipyridine as co-ligands gave the polymeric cluster [{Hg 5 Br 3 (TePh) 7 } n ] (3), whose dissolution in dimethylsulfoxide yielded the cluster [Hg 3 Br 3 (TePh) 3 ]•2dmso. The influence of different ligands, coordinating solvents and reaction stoichiometries on the formation of the title compounds is also discussed. All complexes were characterized by elemental analysis, thermogravimetric analysis and single crystal X-ray diffractometry.

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“…11, 2010 condensation reactions of phosphine-stabilized coppertellurolate clusters for the generation of higher nuclearity complexes, 24 as well as the use of arylselenolate ligands to stabilize copper-selenide and silver-selenide clusters. [24][25][26][27] Mercury selenide and telluride cluster compounds and their conversions have been studied by Eichhöfer et al 19,28 in order to extend optical investigation to group 12-16 (IIb-VI) cluster molecules.…”

Section: Introductionmentioning

confidence: 99%

“…[5][6][7] Our search for new metalchalcogen-containing building blocks is of great interest for many reasons, principally because the variable size of the blocks produces tunable optoeletronic properties of the bulk products, [8][9][10] This emerging field -super lattices of crystalline chalcogenideslinks two traditional, but distinct, areas of research: chalcogenide clusters and reticular materials. [11][12][13][14][15][16][17][18][19] Some authors have proposed alternative ways for the development of metal-chalcogenide clusters. Steigerwald and co-workers [20][21][22][23] have demonstrated the utility of trialkylphosphine tellurides (R 3 P = Te) as a source of soluble "Te(0)" to form numerous metal-telluride polynuclear complexes.…”

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confidence: 99%

Synthesis and characterization of [Cd8Cl2Se(SePh)12(PCy3)2]·2.5CH3OH

Stieler¹,

Bublitz²,

Burrow³

et al. 2010

J. Braz. Chem. Soc.

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Neste artigo estamos apresentando a síntese do composto [Cd 8 Cl 2 (µ 4 -Se) (SePh) 12 (PCy 3 ) 2 ]·2.5CH 3 OH pela reação de Cd(SePh) 2 com CdCl 2 e triciclohexilfosfina em metanol em um reator de aço inoxidável sob condições solvotérmicas a 130 °C. Esse composto corresponde ao último resultado de uma série sistemática de reações e visando ao crescimento de clusters moleculares a partir de Cd(SePh) 2 como reagente de partida. A importância desta síntese não está baseada somente nas propriedades do produto preparado, mas também no seu possível uso, por exemplo, no desenvolvimento de novas metodologias via estratégias "bottom up" para a obtenção de clusters a partir de uma mesma classe de reagentes -M(ER) 2 (M = metal, E = calcogênio, R = alquil ou aril). O composto apresentado neste artigo foi caracterizado por difração de raios X em monocristal, análise elementar, análise termogravimétrica e espectroscopia no UV-Vis. Estes últimos resultados foram correlacionados com dados calculados por DFT, teoria do funcional de densidade.In this article we present the synthesis of the compound [Cd 8 Cl 2 Se(SePh) 12 (PCy 3 ) 2 ]·2.5CH 3 OH by the reaction of Cd(SePh) 2 with CdCl 2 and PCy 3 in methanol in a stainless steel sealed reactor under solvothermal conditions at 130 °C. This compound represents the latest result of our systematic work on the growth of molecular clusters from Cd(SePh) 2 as starting material. Their importance is based not only on the properties of the new compounds, but also by their possible use, for example, in the development of new methods via a ''bottom up" strategy to obtain different clusters from single components like M(ER) 2 (M = metal, E = chalcogen, R = alkyl or aryl). The title compound was characterized by single crystal X-ray diffractometry, elemental analysis, thermogravimetrical analysis and the UV-Vis spectroscopy. These results were correlated with data calculated by DFT, density functional theory. Keywords: cadmium(II) complexes, selenium, tellurium, clusters IntroductionOrganylchalcogen groups bound to metal atoms to generate nanoclusters have become increasingly important due to their potential as semiconductors, among other materials and biological applications. [1][2][3][4] The unique optical and electronic properties inherent to these "quantumconfined particles" (quantum-dots) have been attributed to modifications of the electronic structure -depending upon the particle size -which lead to very different structures than those found in molecular solids or bulk materials. [5][6][7] Our search for new metalchalcogen-containing building blocks is of great interest for many reasons, principally because the variable size of the blocks produces tunable optoeletronic properties of the bulk products, [8][9][10] This emerging field -super lattices of crystalline chalcogenideslinks two traditional, but distinct, areas of research: chalcogenide clusters and reticular materials. [11][12][13][14][15][16][17][18][19] Some authors have proposed alternative ways for the development of metal-...

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Mercury−Chalcogenide Clusters: Synthesis and Structure of [Hg₁₀Te₄(SePh)₁₂(PPhnPr₂)₄], [Hg₁₀Te₄(TePh)₁₂(PPhnPr₂)₄] and [Hg₃₄Te₁₆(SePh)₃₆(PPhnPr₂)₄]

Cited by 39 publications

References 26 publications

Metal Chalcogenide Clusters on the Border between Molecules and Materials

Metal Chalcogenide Clusters on the Border between Molecules and Materials

Synthesis and crystal structure of chalcogenide cluster compound

Synthesis and characterization of [Cd8Cl2Se(SePh)12(PCy3)2]·2.5CH3OH

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