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  • 1
    Electronic Resource
    Electronic Resource
    Equilibrium Studies of the Axial Addition of Chiral Bases to Chiral Metal Schiff Base Complexes (1998)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 1998 (1998), S. 2051-2054 
    Details
    ISSN: 1434-1948
    Keywords: Schiff bases ; Chiral recognition ; Equilibrium constants ; Nickel ; Cobalt ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The syntheses of new chiral 1,2-diphenylethylene-bridged nickel(II) and methylcobalt(III) Schiff base complexes are described. The equilibrium constants for the axial addition of the chiral bases (R)- and (S)-1-phenylethylamine to the enantiomerically pure metal complexes have been determined by means of spectrophotometric titrations. Comparison of the constants for the cyclohexanediyl-bridged complexes (type 1) with those for the more bulky 1,2-diphenylethylene-bridged complexes (type 2) reveals that chiral recognition is only observed in the case of type-2 complexes.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
  • 2
    Electronic Resource
    Electronic Resource
    Steric Effects on Base Adduct Formation and Crystal Structures of Diastereomers of a Nickel(II) Schiff Base Complex (1997)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 130 (1997), S. 1643-1646 
    Details
    ISSN: 0009-2940
    Keywords: Nickel Schiff base complexes ; Base adducts ; Chirality ; Steric hindrance ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reaction of the ligand meso-H2L, derived from cis-diaminocyclohexane and ethyl cyano(ethoxymethylene)acetate, with nickel(II) acetate gives meso-NiL. Spectrophotometric titration of RR-NiL and meso-NiL with various nitrogen bases reveals a strong influence of the steric hindrance of the diaminocyclohexanediyl bridge in meso-NiL on the base adduct stability. The structures of RR-NiL and meso-NIL have been established by X-ray diffraction.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19971301114
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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