Copper(II) Complexes of 1-Alkylamidino-O-alkylurea (alkyl=methyl or ethyl) and Its Growth Inhibition Activity Against Ceratocystis paradoxa

Abstract

Copper(II) complexes of the type [Cu(1-AAAUH)₂]X₂ where 1-AAAUH = 1-alkylamidino-O-alkylurea, X = Cl, Br, I, have been synthesized and characterized by elemental analyses, magnetic moments, electronic absorption, IR and EPR spectroscopy. EPR spectra of two complexes [Cu(II)(1-methylamidino-O-methylurea)₂]Cl₂ and [Cu(II)(1- ethylamidino- O-methylurea)₂]Cl₂ were recorded in solid state and in DMF and bonding parameters α², β² and γ² were calculated. The orbital factors K_II and K_⊥ were also calculated. The trend K_II < K_⊥ indicates the presence of significant in plane π-bonding. The bis(1-alkylamidino-O-alkylurea)copper(II) complexes show growth inhibitory against pathogenic fungus Ceratocystis paradoxa.