ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    ISSN: 0044-2313
    Keywords: Diorganogallium fluorides ; tribenzylbor-tribenzylgallium-acetonitril mixed crystal ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Diorganogallium Fluorides. The Crystal Structure of the Mixed Crystal [B(CH2Ph)3]0.92[Ga(CH2Ph)3]0.08 · NCMeThe reaction of GaR3 with BF3 · OEt2 in diethylether leads to the diorganogallium fluorides R2GaF [R = i-Pr (1), CH2Ph (2), Mes (3)]. Compound 1 is also available by the reaction of i-Pr2GaBr (6) with KF at -20°C in acetonitrile. The by-product B(CH2Ph)3, formed together with 2 during the first reaction, crystallizes with ca. 8% Ga(CH2Ph)3 in acetonitrile as [B(CH2Ph)3]0.92[Ga(CH2Ph)3]0.08 · NCMe (4) in the space group P21/n with a = 1050.32(7) pm, b = 1159.5(2) pm, c = 1591.6(1) pm and β = 96.931(6)°.
    Notes: Die Reaktion von GaR3 mit BF3 · OEt2 in Diethylether führt zu den Diorganogalliumfluoriden R2GaF [R = i-Pr (1), CH2Ph (2), Mes (3)]. 1 kann eben-so über die Umsetzung von i-Pr2GaBr (6) mit KF bei -20°C in Acetonitril dargestellt werden. Das bei der Synthese von 2 nach dem ersten Weg anfallende B(CH2Ph)3 kristallisiert mit ca. 8% Ga(CH2Ph)3 aus Acetonitril in Form von [B(CH2Ph)3]0,92[Ga(CH2Ph)3]0,08 · NCMe (4) in der Raumgruppe P21/n mit a = 1050,32(7) pm, b = 1159,5(2) pm, c = 1591,6(1) pm und β = 96,931(6)°.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 0044-2313
    Keywords: Diorganogallium fluorides ; Diorganoindium fluorides ; reactions ; crystal structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reaction of Diorganogallium(indium) Fluorides. The Crystal Structure of Mes2InFMes2GaF (1) reacts with t-BuNH2 at 20°C to the amine adduct [Mes2Ga(F)(t-BuNH2)] (2). Treatment of 1 with H2S gives after a redox reaction γ-S8-Sulfur (Muthmanns' Sulfur) (3) as the only isolated product. When i-Pr2InF (4) is reacted with [SnCl2(dioxane)] in toluene at 70°C one yields after workup [i-PrInCl2(dioxane)] (5), which is formed after ligand exchange and reaction with dioxane.2 and 5 were investigated by NMR-, IR- and MS-techniques. In addition, 2 · 2,5 THF, 3, 5 and Mes2InF were characterized by an X-ray structure determination. According to that 2 · 2,5 THF contains dimeres, associated by hydrogen brigdes, while 5 possesses a polymeric structure with bridging dioxane molecules. 3 forms eightmembered rings with C2-symmetry. Me2InF is a trimer in the solid state with an In3F3-backbone.
    Notes: Mes2GaF (1) reagiert mit t-BuNH2 bei 20°C zum Aminaddukt [Mes2Ga(F)(t-BuNH2)] (2). Bei Einwirkung von H2S auf 1 tritt eine Redoxreaktion ein, deren einziges isoliertes Produkt der γ-S8-Schwefel (Muthmannsche Schwefel) (3) ist. Wird i-Pr2InF (4) mit [SnCl2(Dioxan)] in Toluol bei 70°C umgesetzt erhält man nach Aufarbeitung das durch Ligandenaustausch und Adduktformierung gebildete [i-PrInCl2(Dioxan)] (5).2 und 5 wurden mittels NMR- und IR-Spektroskopie sowie Massenspektrometrie untersucht. Zusätzlich wurden 2 · 2,5 THF, 3, 5 und Mes2InF durch eine Röntgenstrukturanalyse charakterisiert. 2 · 2,5 THF liegt danach als über Wasserstoffbrückenbindungen assoziiertes Dimer vor, während 5 eine polymere Struktur mit verbrückenden Dioxanmolekülen besitzt. 3 bildet achtgliedrige Ringe mit zweizähliger Lagesymmetrie. Mes2InF formt Trimere mit einem In3F3-Sechsring-Gerüst.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...