- A N-Heterocyclic Carbene-Stabilized Coinage Metal-Chalcogenide Framework with Tunable Optical Properties
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A new class of coinage-metal chalcogenide compounds [Au4M4(μ3-E)4(IPr)4] (M = Ag, Au; E = S, Se, Te) has been synthesized from the combination of N-heterocyclic carbene-ligated gold(I) trimethylsilylc
- Polgar, Alexander M.,Weigend, Florian,Zhang, Angel,Stillman, Martin J.,Corrigan, John F.
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- Synthesis and Thorough Investigation of Discrete Organotin Telluride Clusters
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Systematic experimental and theoretical investigations of reactions of R1SnCl3 (R1=CMe2CH2C(Me)O) with (Me3Si)2Te allowed for the stepwise formation and single-crystalline isolation of the first tin sesquitelluride clusters with functional organic ligands. Subsequent derivatization of the latter took place under reorganization of the inorganic core, affording clusters with complex hybrid architectures.
- Eussner, Jens P.,Kusche, Ralph O.,Dehnen, Stefanie
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p. 12376 - 12388
(2015/08/25)
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- Synthesis of Organic (Trimethylsilyl)chalcogenolate Salts Cat[TMS-E] (E = S, Se, Te): the Methylcarbonate Anion as a Desilylating Agent
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A high-yield synthesis of the class of (trimethylsilyl)chalcogenolate organic salts [Cat][TMS-E] (E = S, Se, Te; Cat = BMPyr, DMPyr, NMe4, nBu3MeP) is presented. The title compounds have been prepared by the strictly aprotic reaction between the respective bis(trimethylsilyl)chalcogenide (TMS2E) and methylcarbonate ionic liquids (ILs). This constitutes a novel reaction behavior of methylcarbonate ILs, acting as a nucleophilic desilylating agent and a Lewis base instead of as a Bronsted base. Thus prepared silylchalcogenolate salts represent an activated form of the multifunctional TMS2E reactant series. Pyrrolidinium TMS-S salts have proven to be excellent precursors for the synthesis of pyrrolidinium hexasulfides. The scope of the desilylation reaction can be extended to other silyl-bearing synthons such as (trimethylsilyl)azide and (trimethylsilyl)cyanide.
- Finger, Lars H.,Scheibe, Benjamin,Sundermeyer, J?rg
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supporting information
p. 9568 - 9575
(2015/10/12)
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- Binary and Ternary Metal Chalcogenide Materials and Method of Making and Using Same
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This invention discloses the synthesis of metal chalcogenides using chemical vapor deposition (CVD) process, atomic layer deposition (ALD) process, or wet solution process. Ligand exchange reactions of organosilyltellurium or organosilylselenium with a series of metal compounds having neucleophilic substituents generate metal chalcogenides. This chemistry is used to deposit germanium-antimony-tellurium (GeSbTe) and germanium-antimony-selenium (GeSbSe) films or other tellurium and selenium based metal compounds for phase change memory and photovoltaic devices.
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- Bis(oligosilanyl)chalcogenides [Me3Si)xMe3-xSi]2E, alkalimetal oligosilanylchalcogenolates (Me3Si)xMe3-xSi-EMI and oligosilanylchalcogenols (Me3Si)xMe3-xSi-EH (E = S, Se, Te) syntheses and NMR study
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Bis(oligosilanyl)chalcogenides [(Me3Si)x Me3-x Si]2E, alkalimetal oligosilanylchalcogenolates (Me3Si)x Me3-x Si-EMI and oligosilanylchalcogenols (Me3Si)x Me3-x Si-EH (x=1-3; E=S, Se, Te) were synthesized and characterized by 1H-, 13C-, 29Si-, 77Se- and 125Te-NMR spectroscopy. Trends of NMR parameters (chemical shifts, coupling constants) are discussed.
- Lange, Heike,Herzog, Uwe
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- Synthesis and characterization of gold(I) thiolates, selenolates, and tellurolates: X-ray crystal structures of Au4[TeC(SiMe3)3]4, Au4[SC(SiMe3)3]4, and Ph3
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We describe the preparation of a series of homoleptic gold(I) chalcogenolates of empirical formula Au[ER] (E = S, Se, Te; R = C(SiMe3)3, Si(SiMe3)3, Ge(SiMe3)3), by reaction of the appropri
- Bonasia, Philip J.,Gindelberger, David E.,Arnold, John
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p. 5126 - 5131
(2008/10/08)
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- NOVEL REACTIONS WITH TELLURIUM AND ORGANOTELLURIUM REAGENTS
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Novel reactions with elemental tellurium, organic ditellurides and diselenides and or reagents with Te-Li, Se-Li and Te-Si bonds are reviewed.These reagents have been used to prepare new molecules with Te-P, Se-P, Te-C, Te=C, Te-I and Se-I bonds.
- Du Mont, W. -W.,Hensel, R.,Kubiniok, S.,Lange, L.,Severengiz, T.
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- A TELLURIUM-125 AND TIN-119 MOESSBAUER AND NUCLEAR MAGNETIC RESONANCE STUDY OF THE GROUP IV ORGANOTELLURIDES
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The 125Te Moessbauer and nmr spectra of the compounds (R3X)2Te (R = Me, X = C, Si, Ge, and Sn; R = Ph, X = Ge and Sn), R3MTePh (R = Me, X = Si, Ge, and Sn; R = Ph, X = Ge, Sn, Pb), R2Sn(TePh)2 (R = Me and t-Bu), and the cyclic compounds (Me2SnTe)3, (Me2Sn)3Te2, and (t-Bu2SnTe)2 have been measured.The trends in the Moessbauer and nmr data are discussed.The Moessbauer quadrupole splittings increase as the nmr chemical shifts become more positive, corresponding to a decrease in the shielding at the tellurium nucleus.The 119Sn Moessbauer and nmr parameters of the compounds (R3Sn)2E and R3SnEPh (R = Me and Ph), (Me2SnE)3, (Me2Sn)2E2, (t-Bu2SnE)2, and Me2Sn(EPh)2 (E = S, Se, and Te) are discussed.The 119Sn Moessbauer quadrupole splittings are again observed to increase as the nmr chemical shifts become more positive.The 125Te and 119Sn nmr and Moessbauer data provide evidence that there is little transmission of bonding effects through the tin-tellurium bond as the chemical environment about the tin or tellurium is changed.
- Jones, C. H. W.,Sharma, R. D.,Taneja, S. P.
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p. 980 - 986
(2007/10/02)
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- THE REACTION OF TRIMETHYLCHLOROSILANE WITH PHENYLTELLUROMAGNESIUM BROMIDE IN TETRAHYDROFURAN: CHARACTERISATION OF THE PRODUCTS BY 29Si AND 125Te NMR SPECTROSCOPY
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The products of the reaction of Me3SiCl with PhTeMgBr in THF have been identified with the aid of high resolution 29Si and 125Te NMR spectroscopy.In addition to the expected product Me3SiTePh (40percent), the symmetrical telluride (Me3Si)2Te (10percent) and the ether Me3SiO(CH2)4TePh (45percent) are also formed.The latter results from ring-opening of the solvent THF by Me3SiCl followed by reaction of the product with PhTeMgBr.
- Jones, C. H. W.,Sharma, R. D.
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p. 113 - 118
(2007/10/02)
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- Studies of silyl and germyl Group VI species. Part IV. Dimethyl- and tetramethyl-disilyl chalcogenides and related species
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The symmetrically substituted disilyl chalcogenides (MenH3-nSi)2E where E = O, S, Se, Te; n = 0 -> 3, have been prepared and characterized spectroscopically and by cleavage reactions.The synthetic routes include reactions of halogenosilanes with water, mercury(II) sulfide, lithium telluride, and complex thio- and seleno-aluminates.The spectroscopic properties of the (MeH2Si)2E and (Me2HSi)2E species, which have not been reported previously, are discussed in some detail.
- Drake, John E.,Glavincevski, Boris M.,Hemmings, Raymond T.
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p. 2161 - 2166
(2007/10/02)
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