A trinuclear Ni(II) cluster with two significantly different configurations in the solid state

Abstract

A chelating bisoxime ligand, 2,2′-[(1,3-propylene)dioxybis(nitrilomethylidyne)]dinaphthol (H₂L), and its corresponding Ni(II) cluster {[NiL(H₂O)]₂(OAc)₂Ni} · 0.5MeOH · 0.5CH₃CN · H₂O (1) have been synthesized and characterized by elemental analyses, TG-DTA, IR, ¹H NMR and X-ray diffraction methods. The Ni(II) cluster is monoclinic, space group P2(1)/c with cell dimensions a = 9.400(2), b = 24.530(4), c = 25.350(3) Å and β = 92.823(3)°. In the Ni(II) cluster, there are two ligand moieties (which provide N₂O₂ donors), two acetate ions and two water molecules, which result in three slightly distorted octahedral geometries around the Ni(II) ions.

Keywords:

• 2,2′-[(1,3-propylene)dioxybis(nitrilomethylidyne)]dinaphthol
• µ-phenoxo
• µ-acetato
• Nickel(II) cluster
• Crystal structure

Acknowledgements

This work was supported by the Foundation of the Education Department of Gansu Province (No. 0604-01) and the ‘Qing Lan’ Talent Engineering Funds of Lanzhou Jiaotong University (QL-03-01A), which are gratefully acknowledged.