Abstract

Three isomeric Me814anes, LA, LB and LC, on aeration with cobalt(II) acetate tetrahydrate and subsequent treatment with concentrated HCl and HClO4, give green trans-[CoLCl2]ClO4 diastereoisomers. Whereas the macrocyclic ligands LA and LB yield two N-chiral diastereoisomers, LC gives one isomer. The complexes undergo axial ligand substitution with small ligands such as , SCN−, OH− and H2O to produce corresponding trans products. Anti-fungal activities of the complexes against a range of phytopathogenic fungi have been investigated.

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