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Gold -Schiff base complexes

Bis(ethylenediamine)gold(III) chloride reacts with /3-diketonates in aqueous base via Schiff base condensation to form complexes of gold(III) with a 14-membered macrocyclic tetraaza ligand such as (292).1711-1713 The X-ray structure showed the cation to be nearly planar. Delocalization of -electrons within the six-membered /3-diketonate rings was indicated by the observed pattern of C—C and C—N distances. Open-chain tetraaza ligand complexes in which condensation of only one /3-diketonate has occurred, can be isolated as intermediates in this reaction. They may be used for further condensation with a different /3-diketonate. Oxidation of this complex with trityl tetrafluoroborate introduces a double bond in position C2C3.1712,1714... [Pg.997]

See other pages where Gold -Schiff base complexes is mentioned: [Pg.79]    [Pg.91]    [Pg.326]    [Pg.394]    [Pg.78]    [Pg.1012]    [Pg.902]    [Pg.270]    [Pg.263]    [Pg.302]    [Pg.177]    [Pg.432]    [Pg.118]    [Pg.432]    [Pg.118]    [Pg.125]    [Pg.379]    [Pg.599]    [Pg.71]    [Pg.82]   
See also in sourсe #XX -- [ Pg.433 ]



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