Self-assembly of a 15-nickel metallamacrocyclic complex derived from the L-glutamic acid Schiff base ligand

An intriguing 15-nickel metallamacrocyclic complex, [Ni15(EVan)10(H2O)20], 1 (EVan = Schiff base formed between L-glutamic acid and o-vanillin), has been synthesized and characterized by single-crystal X-ray diffraction and spectroscopic analyses. 1 adopts a Ni–O–Ni–O–Ni–O configuration and can be divided into five discrete trinuclear units.