Tetrakis(2,2′-bi­pyridine)­tetra-μ3-hydro­xo-di-μ-tri­fluoro­acetato-tetracobalt(II) diiodide diaceto­nitrile monohydrate: a compound containing a tetranuclear `cubane'-type cobalt(II) core Academic Article uri icon

abstract

  • A new compound, [Co4(C2F3O 2(OH)4(C10H8N2) 4]I2· 2C2H3N·H 2O, containing a tetranuclear cobalt(II)-hydroxo core with a cube-like structural geometry is reported. The four CoII coordination polyhedra are irregular octahedra and the CoII atoms are linked by three hydroxo and trifluoroacetate ions resulting in a Co4O 4 core with approximate tetrahedral symmetry. The coordination polyhedra share edges with short Co⋯Co distances. A bond valence analysis shows that a cubelike arrangement of atoms in a tetranuclear cluster is ideal for the clusters [M4(OR)4]4+ (R is a strongly binding group) and [M4O4]8+ when the metal ions are in oxidation states of +2 and +4, respectively. © 2004 International Union of Crystallography Printed in Great Britain - all rights reserved.

author list (cited authors)

  • Zhao, H., Bacsa, J., & Dunbar, K. R.

citation count

  • 6

publication date

  • April 2004