Abstract
The ligand pentanoic acid [5-(2-pyridyl)-1,3,4-thiadiazol-2-yl]-amide-5-(3-ethyl)-3H-1-imidazolium bis(trifluormethylsulfonyl)imide (LNTf2) has been prepared and used for the complexation with “Co(NCS)2”. Compounds [CoII(L)2(NCS)2][Co(NCS)4] and [CoII(L)2(NCS)2](NTf2)2 of L + have been structurally characterised by single-crystal X-ray diffraction analyses and are rare examples of Werner-type 3d transition metal complexes with chromophores of neutral charge but cationic coordination entities, due to imidazolium tags.
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Acknowledgments
This work was supported by the European Social Fund and the Ministry of Science, Research and the Arts Baden–Württemberg within the Margarete-von-Wrangell-Program, by the Deutsche Forschungsgemeinschaft (DFG) and by the University of Freiburg. The authors are indebted to Dominic Kaase and Dr. Harald Scherer for support on X-ray crystallography and NMR spectroscopy, respectively. J. K. thanks Prof. Ingo Krossing and Prof. Harald Hillebrecht for their generous and continuous support.
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Huxel, T., Klingele, J. Cobalt(II) complexes of a new imidazolium-tagged thiadiazole ligand with bis(trifluormethylsulfonyl)imide or tetraisothiocyanato cobaltate as counterion. Transition Met Chem 40, 61–68 (2015). https://doi.org/10.1007/s11243-014-9890-1
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DOI: https://doi.org/10.1007/s11243-014-9890-1