Syntheses and structures of a range of metal complexes with the ligand cis,cis-1,3,5-(E,E)-tris(phenylpropenylideneamino)cyclohexane
Abstract
The ligand cis,cis-1,3,5-(E,E)-tris(phenylpropenylideneamino)cyclohexane (Ph-protach) was coordinated with a range of metal salts. The products were characterised by IR and 1H NMR spectroscopies and FAB+MS. In addition, the complexes [Cu(Ph-protach)(η2-SO4)][Cu(Ph-protach)(η1-SO4)(CH3OH)], [Ni(Ph-protach)(Cl)]BPh4, [Zn(Ph-protach)(Cl)]BPh4 and [Cd(Ph-protach)(NO3)(CH3OH)]BPh4 were structurally analysed by single crystal X-ray diffraction. Each complex exhibits an N3 face-capping coordination geometry around the metal ion and a stereochemically-rigid hydrophobic cavity around the metal ion's remaining coordination site(s).