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Issue 33, 2014
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Synthesis and characterization of mononuclear Zn(II), Co(II) and Ni(II) complexes containing a sterically demanding silanethiolate ligand derived from tris(2,6-diisopropylphenoxy)silanethiol

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Abstract

Four heteroleptic complexes of nickel(II), cobalt(II) and zinc(II), containing a monodentate silanethiolate ligand derived from tris(2,6-diisopropylphenoxy)silanethiol (TDST), were prepared and characterized. Nickel(II) and cobalt(II) complexes of the formula M(NH3)2(TDST)2 (M = Ni(II) complex 1, M = Co(II) complex 2) were obtained from the respective chlorides. Zinc complexes of the general formula Zn(acac)(TDST)(L), where L = EtOH (complex 3) or H2O (complex 4), were obtained from zinc acetylacetonate. A single-crystal X-ray structural analysis revealed that all crystalline products are solvent adducts. The geometries of ligands in the complexes are typical: distorted tetrahedral in zinc and cobalt(II) complexes and square planar in nickel(II) compounds. Magnetic studies performed for Ni(II) and Co(II) compounds confirmed the diamagnetic character of the first complex and high-spin paramagnetic configuration of the latter. Nickel(II) and cobalt(II) complexes were additionally characterized by UV-Vis and IR spectroscopy. IR bands for ligands in the complexes were assigned with the help of the DFT vibrational frequency calculations.

Graphical abstract: Synthesis and characterization of mononuclear Zn(ii), Co(ii) and Ni(ii) complexes containing a sterically demanding silanethiolate ligand derived from tris(2,6-diisopropylphenoxy)silanethiol

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Publication details

The article was received on 11 Apr 2014, accepted on 24 Jun 2014 and first published on 26 Jun 2014


Article type: Paper
DOI: 10.1039/C4DT01079E
Citation: Dalton Trans., 2014,43, 12766-12775
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    Synthesis and characterization of mononuclear Zn(II), Co(II) and Ni(II) complexes containing a sterically demanding silanethiolate ligand derived from tris(2,6-diisopropylphenoxy)silanethiol

    A. Dołęga, A. Jabłońska, A. Pladzyk, Ł. Ponikiewski, W. Ferenc, J. Sarzyński and A. Herman, Dalton Trans., 2014, 43, 12766
    DOI: 10.1039/C4DT01079E

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