Structurally characterized dinuclear zinc(II) bis(salamo)‐type tetraoxime complex possessing square pyramidal and trigonal bipyramidal geometries

A novel dinuclear Zn(II) complex with the chemical formula [Zn2(L)(OCH3)] has been synthesized by a bis(salamo)‐type tetraoxime ligand based on 3‐bromo‐5‐chlorosalicylicaldehyde, and characterized by elemental analyses, IR, UV–vis, and fluorescent spectra, and single‐crystal X‐ray diffraction analysis. All the Zn(II) atoms are pentacoordinated by N2O2 donor atoms from the (L)3− unit and one oxygen atom from one μ2‐methoxyl group. The Zn(II) (Zn1 and Zn4) atoms have distorted square pyramidal geometries (τ1 = 0.458, τ4 = 0.388), whereas the Zn2 and Zn3 atoms adopt trigonal bipyramidal (τ2 = 0.675, τ3 = 0.550) geometries. The Zn(II) complex is self‐assembled by intermolecular CH···O interactions to form an infinite three‐dimensional supramolecular structure. Interestingly, the intermolecular CH···π interactions in the Zn(II) complex is involved not in the formation of three‐dimensional structures but rather in the formation of the 0D dimer structure. Meanwhile, the optical properties of the Zn(II) complex were also measured and are discussed.