Journal
INORGANIC CHEMISTRY COMMUNICATIONS
Volume 105, Issue -, Pages 129-134Publisher
ELSEVIER
DOI: 10.1016/j.inoche.2019.04.032
Keywords
Ferrocene derivative; Crystal structure; Mercury(II) recognition; Electrochemistry; Titration
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Funding
- National Natural Science Foundation of China [51604307, 21271189]
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A new ferrocene based receptor 1,2-bis(ferrocenyhnethylthio)-maleonitrile (FcMNT) was synthesized and characterized by elemental analysis, FTIR, NMR and X-ray single crystal diffraction. The ligand showed a high selection for Hg2+ in DMF or DMF/H2O mixed solution. Upon addition of Hg2+ in DMF, the receptor showed an obvious color change and significant UV vis spectroscopic response. Electrochemical titration revealed that the receptor sensed Hg2+ in high selectivity with an anodic shift of 307 mV. The (CNMR)-C-13 titration confirmed that the Hg2+ interacted with the S atoms of FcMNT when the amount of Hg2+ was under 1.0 equiv.; the Hg2+ interacted with C=C and C N groups when the amount of Hg2+ was above 1.0 equiv.
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