New complexes of Ni(II) and Co(III) with a Schiff-base ligand derived from o-vanillin. Crystal structure, magnetic and catalytic properties of a dissymmetric binuclear nickel(II) complex

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Cătălin Maxim
  • Augustin M. Mădălan
  • Mihaela Hillebrand
  • C. González-Arellano
  • Stéphane Soriano
  • Eva Rentschler
  • Marius Andruh

Detail(s)

Original languageEnglish
Pages (from-to)77-82
Number of pages6
Journal / PublicationPolyhedron
Volume150
Online published9 May 2018
Publication statusPublished - 1 Aug 2018
Externally publishedYes

Abstract

A binuclear complex, [Ni2L2(NO3)(H2O)(CH3CN)]ClO4·CH3CN (1), has been obtained using a Schiff-base ligand (HL) derived from o-vanillin and 4-(2-aminoethyl)morpholine. The crystal structure of 1 has been solved. Both Ni(II) ions are hexacoordinated, but they display different coordination spheres. The exchange interaction between the two nickel ions is antiferromagnetic (J = −7.9 ± 0.2 cm−1; H = −JS1S2), in line with the DFT calculations. Compound 1 has been tested as a catalyst in the epoxidation of various olefins. The reaction of the same ligand with a mixture of cobalt(II) perchlorate and nitrate affords a mononuclear Co(III) complex, [CoL2(H2O)]ClO4·CH3OH (2).

Research Area(s)

  • Catalysis, Cobalt complexes, Magnetic properties, Nickel complexes, Schiff-base ligands

Citation Format(s)

New complexes of Ni(II) and Co(III) with a Schiff-base ligand derived from o-vanillin. Crystal structure, magnetic and catalytic properties of a dissymmetric binuclear nickel(II) complex. / Neacşu, Vlad Andrei; Maxim, Cătălin; Mădălan, Augustin M.; Hillebrand, Mihaela; González-Arellano, C.; Soriano, Stéphane; Rentschler, Eva; Andruh, Marius.

In: Polyhedron, Vol. 150, 01.08.2018, p. 77-82.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review