Synthesis, characterization, and structure of a new ferromagnetically coupled tetranuclear nickel cubane complex

Resumo

A new nickel complexes [Ni(L)₄(OCH₃)₄(CH₃OH)₄] (I) (HL = salicylaldehyde) was synthesized and structurally characterized by elemental analyses and single-crystal X-ray diffraction (CIF file CCDC no. 1410887). The complex crystallizes in monoclinic P2₁/c space group and consists of one crystallographically independent molecule which contains a distorted tetranuclear cubane core with alternating nickel and oxygen atoms of the four on the corners. The magnetic properties reveal the presence of ferromagnetic interactions between the nickel(II) centers in the cubic cluster with two different exchange pathways.