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Issue 5, 2015
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Organometallic sulfur complexes: reactivity of the hydrogen sulfide anion with cobaloximes

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Abstract

The reaction of alkylcobaloxime [Co(dmgH)2(CH2CH3)(py)] (1) (dmgH = the anion of dimethyl-glyoxime) with KSH in water solution resulted in the selective displacement of the pyridine axial ligand affording the derivative K[Co(dmgH)2(CH2CH3)(SH)] (2). An 1H–1H EXSY experiment revealed that the substitution is reversible and occurs in a slow exchange regime. Attempts to grow crystals of the HS adduct led to isolation of a rare example of the unexpected trisulfido-bridged dinuclear complex K2[Co2(dmgH)2(CH2CH3)2(μ-S3)]. It was shown that the glyoximato ligands provided the metal centre with a coordination environment quite robust to prevent decomposition and constitute a suitable platform for developing the chemistry of organometallic complexes bearing hydrogensulfido or oligosulfido ligands.

Graphical abstract: Organometallic sulfur complexes: reactivity of the hydrogen sulfide anion with cobaloximes

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Publication details

The article was received on 24 Jan 2015, accepted on 13 Mar 2015 and first published on 17 Mar 2015


Article type: Paper
DOI: 10.1039/C5NJ00206K
New J. Chem., 2015,39, 4093-4099

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    Organometallic sulfur complexes: reactivity of the hydrogen sulfide anion with cobaloximes

    M. Strianese, S. Mirra, V. Bertolasi, S. Milione and C. Pellecchia, New J. Chem., 2015, 39, 4093
    DOI: 10.1039/C5NJ00206K

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