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Synthesis and characterization of copper(II) complexes incorporating pyrazolyl-derived N,S-donor bidentate ligands.

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Kia,  R.
Research Group of Structural Dynamics of (Bio)Chemical Systems, MPI for Biophysical Chemistry, Max Planck Society;

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Citation

Sadr, M. H., Soltani, B., Jalili, A., Nejadghafar, F., Kia, R., Engle, J. T., et al. (2012). Synthesis and characterization of copper(II) complexes incorporating pyrazolyl-derived N,S-donor bidentate ligands. Transition Metal Chemistry, 37(7), 611-617. doi:10.1007/s11243-012-9629-9.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002C-01EC-7
Abstract
The novel bidentate N,S-donor anionic ligands [PhNCSIndz]−, [PhNCSImz]−, [PhNCSPzMe3]−, and [EtNCSPz]−, where Indz = indazole, Imz = imidazole, PzMe3 = 3,4,5-trimethylpyrazole, and Pz = pyrazole, were synthesized and used to prepare Cu(II) complexes of general formula [Cu(N^S)2]. The ligands were synthesized via direct addition of phenylisothiocyanate or ethylisothiocyanate into THF suspensions of the corresponding sodium-pyrazolate salts. All of the synthesized compounds, including the ligands and the complexes, were characterized by physico-chemical and spectroscopic methods, and crystal structures of [Cu(EtNCSPz)2] and [Cu(PhNCSPzMe2)2] were determined by X-ray diffraction analysis, showing a trans-square planar geometry for [Cu(EtNCSPz)2] and a distorted tetrahedral geometry for [Cu(PhNCSPzMe2)2].