Synthesis, structure and Mössbauer characterization of polymeric iron(II) complexes with bidentate thiourea ligands |
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Authors: | Steffen Meyer |
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Institution: | Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany |
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Abstract: | Complexes of FeCl2 with the known bis(3-methyl-2-thione-imidazolyl)methane (L1) and the new bis(3-tert-butyl-2-thione-imidazolyl)methane (L2) are reported. For both L1FeCl2]n (3) and L2FeCl2]n (4) X-ray crystallography reveals that 1D-polymeric chain structures are present in the solid state, with the two mercaptoimidazolyl units of L1 and L2 coordinating to different metal ions. Complexes 3 and 4 are further characterized by Mössbauer spectroscopy and SQUID magnetometry. NMR spectroscopy suggests that the complexes largely dissociate in polar solvents. X-ray structures of L2 and its precursor bis(imidazolium) salt are also reported. |
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Keywords: | Iron Thiourea ligands Coordination polymer Mö ssbauer spectroscopy |
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