The chemistry of sulphur–nitrogen ligands. Part II. Nickel(II) complexes of the cis-N2S2 macrocycle 14,14,16-trimethyl-2,6-dithia-13,17-diazatricyclo[16.4.0.07,12]-docosa-1(18),7(12),8,10,16,19,21-heptene

Abstract

The reaction of acetone with the nickel(II) complex of 1,5-bis(2-aminophenylthio)pentane in methanol solution gives the nickel complex of the newmacracyclic title ligand. L¹. The complexes [Nil₂(L¹)]. [Ni(L¹)(NCS)₂], and [NiBr(ClO₄)(L¹)] have been prepared by metathesis reactions of [NiBr₂(L¹)] with an appropriate salt in methanol solution. In the solid state, the electronic spectra and magnetic-susceptibility measurements are consistent with distorted octahedral structuresforthe various complexes. Axial co-ordination is relatively weak; thus [NiBr₂(L¹)] behaves as a 2 : 1 electrolyte in methanol solution.