Abstract
Complexes of Cu(II), Ni(II), Co(II), Fe(II) and Mn(II) with pyrazine-2-amidoxime have been prepared and characterised. While the ligand in its non-deprotonated (free) form gives a diamagnetic complex with iron(II) perchlorate and paramagnetic complexes with others, it given a diamagnetic nickel(II) complex in the deprotonated form. Bonding in all these complexes takes place through the pyrazine ring nitrogen (I) and oxime nitrogen.