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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 352 (1967), S. 24-26 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Cr(t-OC4H9)4 is prepared in a simple manner with good yield by oxidation of CrIII chloride.
    Notes: Cr(t-OC4H9)4 läßt sich durch Oxydation von Chrom(III)-chlorid in einfacher Weise mit guter Ausbeute darstellen.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 96 (1963), S. 3008-3016 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch die optische Untersuchung der Reduktion von CrO3 mit Chlorwasserstoff in Eisessig konnte ein Reaktionsablauf nach \documentclass{article}\usepackage{amssymb}\pagestyle{empty}\begin{document}$$ {\rm CrO}_{\rm 3} \; \to \;{\rm CrO}_{\rm 2} {\rm Cl}_{\rm 2} \; \to \;[{\rm CrOCl}_{\rm 4}]^\Theta /[{\rm CrOCl}_{\rm 5}]^{2 \Theta} \,\mathop \to \limits^{hv} \,[{\rm Cr(H}_{\rm 2} {\rm O}){\rm Cl}]^{2 \Theta} $$\end{document} unter Ausschluß weiterer Zwischenstufen bewiesen werden. Chlorochromat(V)- Anionen bilden außer den bekannten WEINLANDschen Salzen Komplexe der Formel [HNR3NH][CrOCl3] und [R3NCOR][CrOCL4]. Das mit [CrOCl5]2⊖ im Gleichgewicht stehende CrOCl3 ist durch Umsetzung von CrO3 bzw. CrO2Cl2 mit Thionyl- oder Sulfurylchiorid kristallin erhältlich. Die Addition von Benzoesäureanhydrid an CrOCl3führt zu Cl3Cr(OCOC6H5)2, das auch aus Benzoylchlorid und CrO3 direkt zugänglich ist.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 126 (1993), S. 1559-1563 
    ISSN: 0009-2940
    Keywords: Boranes, organo(organoimino)- ; Diazadiboretidines ; Borazines ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A Further Contribution to the Stabilization of Iminoboranes RB≡NR'The iminoboranes (tBuB≡NR (1a, b, R=iPr, Ph) and RB≡NR (1c, d; R=Me3CCH2, Me3SiCH2) were prepared by gas-phase thermolysis of Cl(tBu)B=N(R)SiMe3 (6a, b) and R2BN3 (7c, d), respectively. At room temperature, the molecules 1a-c cyclodimerize to the diazadiboretidines 2a-c, whereas the borane 1d cyclotrimerizes to the borazine 3d; these stabilization reactions are discussed in terms of the steric demand of the organic ligands. The ethyloboration of 1a, c with BEt3 BCl to 1a yields the diborylamine 9d. Benzyl azide and 1c, d undergo a [3 + 2] cycloaddition with formation of the tetrazaborolidines 10c, d.
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 569 (1989), S. 7-15 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Phosphorus. 191. On the Reaction Behavior of Sodium Tetraphosphinoborate NaB(PH2)4Sodium tetraphosphinoborate rearranges to sodium heptaphosphinodiborate, Na[(PH2)3B—PH2—B(PH2)3] (1), at moderate temperatures in the presence of tetrahydrofuran. By reacting NaB(PH2)4 with BH3 ß THF sodium tetrakis(boranephosphino)borate, NaB(PH2BH3)4 (2), is formed, which has a remarkable thermal stability, but is not stable without solvent. With methyl iodide, the easily decomposible triphosphinoborane-methylphosphane, B(PH2)3PH2CH3 (3), has been obtained. The 31P- and 11B-NMR data of 1-3 are reported and discussed.
    Notes: Natriumtetraphosphinoborat lagert sich in Gegenwart von Tetrahydrofuran schon bei mäßigen Temperaturen in Natrium-heptaphosphinodiborat, Na[(PH2)3B—PH2—B(PH2)3] (1), um. Bei der Reaktion von NaB(PH2)4 mit BH3 · THF entsteht Natriumtetrakis(boranphosphino)borat, NaB(PH2BH3)4 (2), das eine bemerkenswerte thermische Stabilität aufweist, lösungsmittelfrei aber nicht beständig ist. Mit Methyliodid wird das leicht zersetzliche Triphosphinoboranmethylphosphan, B(PH2)3PH2CH3 (3), gebildet. Die 31P- und 11B-NMR-Daten von 1-3 werden mitgeteilt und diskutiert.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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