Ligand Metathesis in Nickel(II) Complexation with closo-Decaborate Anion

Nickel(II) complexation with the closo-decaborate anion in water and acetonitrile is studied. Complexes [Ni(solv)(6)][B10H10] (solv = H2O (I) or CH3CN (II)) are isolated. The complexes are characterized by elemental analysis and IR spectroscopy. Complex [Ni(CH3CN)(5)(H2O)](0.75)[Ni(CH3CN)(4)(H2O)(2)](0.25)[B10H10]& BULL;0.5H(2)O (III) is isolated from an acetonitrile-water system. The structure of complex III is solved by X-ray diffraction (XRD) (CIF file CCDC no. 2224702). A mechanism of ligand metathesis in the complexation of nickel(II) is proposed.

Automated summary

The complexation of nickel(II) with the closo-decaborate anion in water and acetonitrile has been studied. Complexes [Ni(solv)(6)][B10H10] (solv = H2O (I) or CH3CN (II)) have been isolated and characterized by elemental analysis and IR spectroscopy. Complex [Ni(CH3CN)(5)(H2O)](0.75)[Ni(CH3CN)(4)(H2O)(2)](0.25)[B10H10]& BULL;0.5H(2)O (III) has been isolated from an acetonitrile-water system and its structure has been solved by X-ray diffraction (XRD) (CIF file CCDC no. 2224702). A mechanism of ligand metathesis in the complexation of nickel(II) has been proposed.