Complexes of iron(III), ruthenium(III) and rhodium(III) with three new tetraaza macrocyclic ligands, oxo4bzo3[14]triene-N4 [TBTAC14Tone], oxo4bzo2[14]diene-N4 [DBTAC14Tone] and oxo4bzo2[15]diene-N4 [DBTAC15Tone] have been prepared and characterised. The complexes are found to have the formulae [FeLCl2]Cl. 2H2O, [RuLCl2]Cl. 3H2O and [RhLCl2]Cl. 2H2O. The cations adopt a trans-dichloro configuration with the six-coordinated trivalent metal ions in a pseudo-octahedral geometry.
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