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  • 1985-1989  (2)
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  • 1
    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 N-substituted Metal Amides. XIX. Reaction of [Co(NPh2)2]2 with CO - a New Way for the Synthesis of an Chelate Complex of Cobalt (II) with an Derivative of Anthranilic Acid; Molecular Structure of [Co(NPh(o—C6H4CONPh2))2]Reaction of CO (1 atm, room temperature) with [Co(NPh2)2]2 (I) in benzene (mole ratio 3 : 1) gives Co(CO)3(NPh2)4(benzene)1·6 (II). By adding more CO to the reaction mixture (mole ratio 6 : 1) Co4(CO)12 (III) and a dark red compound of the analytical composition C50H38CoN4O2 (IV) could be isolated. The structure of the red compound was determined by X-ray diffraction. This investigation show IV to be a cobalt(II) complex of an derivative of the anthranilic acid, [Co(NPh(o—C6H4CONPh2))2] (IV). The cobalt coordination in this compound is a distorted tetrahedron. Crystal data of IV: space group P1 with a = 12.449(1) Å, b = 12.431(1) Å, c = 13.223(1) Å, α = 95.47(1)°, β = 95.37(1)°, γ = 94.10(1)°, and Z = 2.
    Notes: Bei der Umsetzung von CO (1 atm, Raumtemperatur) mit [Co(NPh2)2]2 (I) in Benzen im Molverhältnis 3 : 1 entsteht Co2(CO)3(NPh2)4(benzen)1,6 (II); im Molverhältnis 6 : 1 bildet sich ein Reaktionsgemisch, aus dem Co4(CO)12 (III) sowie eine dunkelrote Verbindung der analytischen Zusammensetzung C50H38CoN4O2 (IV) isoliert werden kann. Die Röntgenstruktur-bestimmung von IV ergab, daß es sich um den ein Anthranilsäurederivat als Liganden enthaltenden Komplex [Co(NPh(o—C6H4CONPh2))2] IV handelt, der eine verzerrt tetraedrische Koordination aufweist.Kristalldaten für IV: Raumgruppe P1 mit a = 12,449(1) Å, b = 12,431(1) Å, c = 13,223(1) Å, α = 95,47(1)°, β = 95,37(1)°, γ = 94,10(1)° und Z = 2.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 2
    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 N-substituted Metal Amides. XVIII. Reaction of (Ph2N)2Co—Co(NPh2)2 with Alkali Metals and Alkali Metal Amides  -  a Method for the Preparation of Cobalt (II) Complexes of the Coordination Number 3Alkali metals (M) react with [Co(NPh2)2]2 (I) in inert solvents to give compounds of the type MI[Co(NPh2)3]. In these compounds cobalt have been shown to have the coordination number of 3. The cleavage of the Co—Co-bond of I with alkali metal amides yields complexes of the composition MI[Co(NPh2)3], M2I[Co(NPh2)4] and MI[Co(NPh2)2NPhR]. The results of magnetic and spectroscopical investigations of the new compounds are communicated.
    Notes: Alkalimetalle (M) reagieren mit [Co(NPh2)2]2 (1) in inerten Lösungsmitteln unter Bildung von Verbindungen des Typs MI[Co(NPh2)3], in denen Cobalt die Koordinationszahl 3 besitzt. Alkalimetallamide spalten die Co—Co-Bindung in I, wobei Komplexe der Zusammensetzung MI[Co(NPh2)3], M2I[Co(NPh2)4] und MI[Co(NPh2)2NPhR] entstehen. Die Ergebnisse magnetischer und spektroskopischer Untersuchungen der neuen Verbindungen werden mitgeteilt.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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