Ligating Properties of Some Arylazobarbituric Acids

摘要

The coordinating behaviour of 5-(arylazo) barbituric acid (aryl = 4-MeC6H4, 4-OMeC6H4, 4-COMeC6H4, 4-ClC6H4, 4-BrC6H4, 4-IC6H4, 4-NO2C6H4, 4-SO3HC6H4and 4-CO2HC6H4) towards Fe (III), Co(II), Ni(II) and Cu(II) is investigated. The data suggest octahedral iron(III) complexes and 5- and 6-coordination for both cobalt(II) and nickel(II) complexes and 4- and 5-coordination for the copper(II) complexes in a dimeric skeleton through Cu-Cu interaction.