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  • Inorganic Chemistry  (2)
  • Computational Chemistry and Molecular Modeling  (1)
  • 2020-2022
  • 1970-1974  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 421-433 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Transanular Rearrangements of Cyclodecynyl Derivatives5-Cyclodecyn-1-yl P-nitrobenzoate (1c) solvolyses in aqueous ethanol with transanular participation of the triple bond about 20 times faster than cis-5-cyclodecen-1-yl p-nitrobenzoate (6). The only product of the reaction is 1-oxodecaline (5). The high tendency of rearrangement of cyclodecynyl derivatives can also be shown in various other reactions: 5-Cyclodecyn-1-ol (1b) in ethanolic hydrochloric acid is quantitatively isomerized to 5; treatment of 5-cyclodecyn-1-ylamine (1d) with nitrous acid also results in partial rearrangement to 5. 5-Cyclodecyn-1-one (4) is rearranged with mineral acids as well as with boron trifluoride to 1-oxo-4a(8a)-octaline (14). Similar experiments with 1-methyl-5-heptyn-1-yl compounds (7) are reported.
    Notes: Cyclodecin-(5)-yl-[p-nitro-benzoat] (1c) solvolysiert in wäßr. Äthanol unter transanularer Beteiligung der Dreifachbindung etwa 20mal schneller als cis-Cyclodecen-(5)-yl-[p-nitro-benzoat] (6). Als einziges Reaktionsprodukt wird 1-Oxo-decalin (5) erhalten. Die hohe Umlagerungstendenz von Cyclodecinylderivaten wird auch an verschiedenen anderen Reaktionen nachgewiesen: Cyclodecin-(5)-ol-(1) (1b) wird mit äthanol. Salzsäure quantitativ zu 5 isomerisiert, Cyclodecin-(5)-yl-amin (1d) reagiert mit salpetriger Säure unter teilweiser Umlagerung ebenfalls zu 5. Cyclodecin-(5)-on-(1) (4) wird mit Mineralsäuren sowie mit Bortrifluorid in 1-Oxo-Δ4a(8a)-octalin (14) umgelagert. Über vergleichende Versuche an 1-Methylheptin-(5)-yl-Verbindungen (7) wird berichtet.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 1614-1620 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: X-Ray Crystallographic Characterization of the Reaction Product of Bis (S-aminodithionitrito)nickel(II) with Ammonia, Formaldehyde, and MethanolThe nickel(II) complex Ni(N2S2)2C4H9NO (3), which is formed during the reaction of Ni(HN2S2)2 (1) with ammonia and formaldehyde in methanol, crystallizes in the monoclinic space group P21/c with a = 8.293, b = 14.917, c = 9.191 Å, β = 94.77° and Z = 4. The structure was solved by the symbolic addition procedure and was refined to R = 0.036. The two planar NiN2S2 rings intersect with a dihedral angle of 4.5°.
    Notes: Der Nickel(II)-Komplex Ni(N2S2)2C4H9NO (3) entsteht bei der Reaktion von Ni(HN2S2)2 (1) mit Ammoniak und Formaldehyd in methanolischer Lösung. Er kristallisiert in der monoklinen Raumgruppe P21/c mit den Gitterkonstanten a = 8.293, b = 14.917, c = 9.191 Å, β = 94.77° und Z = 4. Seine Struktur wurde mittels der symbolischen Additionsmethode bestimmt und bis zu R = 0.036 verfeinert. Die beiden ebenen NiN2S2-Ringe bilden einen Flächenwinkel von 4.5°.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 6 (1972), S. 383-386 
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: It is a standard theorem of group representation theory that the dimension of an irreducible representation is a divisor of the order of the group. This paper gives a new, relatively simple proof, intended to make the theorem understandable to readers unfamiliar with algebraic integers.
    Type of Medium: Electronic Resource
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