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  • 1970-1974  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 106 (1973), S. 2918-2924 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigations of Biologically Active Ligands, X. The 1H and 13C N.M.R. Spectra of Maleic Acid Hydrazide and its N-Methyl DerivativeThe 1H and 13C n.m.r. spectra of maleic acid hydrazide and N-methylmaleic acid hydrazide were registered between -80 and +120°C as well as between -40 and +50°C. They allow conclusions on the H-bridging systems present in solution.
    Notes: Die 1H- und 13C-NMR-Spektren von Maleinsäurehydrazid nnd N-Methylmaleinsäure-hydrazid wurden von -80 bis + 120°C bzw. -40 bis +50°C aufgenommen. Sie erlauben Rückschlüsse auf die in Lösung vorliegenden H-Brückensysteme.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 107 (1974), S. 570-574 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 13C N.M.R. Spectra of Indene π-Complexes and their Use for the Determination of Ligand HaptopropertiesThe analysis of the 13C n.m.r.spectra of indene and some indene π-complexes allows to distinguish between h6-, h5-, and h3-compounds. In particular the structure of bis(h3-indenyl)-nickel is determined and an improved synthesis of this compound is reported.
    Notes: Die Analyse der 13C-NMR-Spektren von Inden und einigen π-Komplexen des Indens erlaubt, zwischen h6-, h5- und h3-Verbindungen zu unterscheiden. Insbesondere wird die Struktur von Bis(h3-indenyl)nickel geklärt und über eine verbesserte Synthese dieser Verbindung berichtet.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 106 (1973), S. 1122-1128 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of Nitrosyl Complexes, I. The Formation of μ3-Organoimido(„Organonitrene“) Complexes from (Cyclopentadienyl)nitrosylnickelThe reaction of organolithium compounds, LiR (R = C6H5, tert-C4H9), with (cyclopentadienyl)nitrosylnickel, C5H5NiNO, in tetrahydrofuran or ether leads, by means of initial carbanion addition to the nitrogen atom of the nitrosyl ligand, to trinuclear, paramagnetic organoimido or „organonitrene“ complexes whose formula is (C5H5Ni3NR and in which the organoimido group acts as a μ 3-bridging ligand. A side reaction whereby substitution of the cyclopentadienyl rings occurs can largely be suppressed by working at -40°. The properties and the i.r., 1H n.m.r., and mass spectroscopic findings on these complexes are described and interpreted.
    Notes: Die Umsetzung von Lithiumorganylen LiR (R = C6H5, tert-C4H9) mit (Cyclopentadienyl)-nitrosylnickel, C5H5NiNO, in Tetrahydrofuran oder äther führt unter primärer Carbanion-Addition an das N-Atom des Nitrosylliganden zu dreikernigen, paramagnetischen Organoimido- oder „Organonitren“-Komplexen der Form (C5H5Ni3NR, in denen die Organoimidogruppe eine μ3-Brückenfunktion ausübt. Eine Nebenreaktion, bei der zusätzlich Substitution an den Cyclopentadienylringen eintritt, läßt sich durch Arbeiten bei -40° weitgehend unterdrücken. Die Eigenschaften sowie die IR-, 1H-NMR- und massenspektroskopische Untersuchung dieser Komplexe werden beschrieben und interpretiert.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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