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Voltammetric metal cation sensors based on ferrocene derivatives with oxazoline and imine substituents

Sutcliffe, O B and Chesney, A and Bryce, M R (2001) Voltammetric metal cation sensors based on ferrocene derivatives with oxazoline and imine substituents. Journal of Organometallic Chemistry, 637 (Specia). pp. 134-138. ISSN 0022-328X

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Ferrocene derivatives la, lb and 2 containing oxazoline substituents act as efficient voltammetric sensors of Mg2+ and Ca2+ ions in acetonitrile solution in concentrations as low as 10 mol%: a new redox peak appears in the cyclic voltammogram, positively shifted by 310-360 mV for 1a and 1b, and by 160-190 mV for 2, compared to E-1/2 of the free ligand. For the bisferrocenyldiimine derivative 3 the shift is 150-160 mV. Compounds la, lb and 3 are also responsive to Cu2+ ions (shifts of 250, 320 and 160 mV, respectively) and compound 3 is responsive to Zn2+ ions (150 mV shift) with no interference from a large excess of several other metal salts. UV-vis spectrophotometric studies and H-1-NMR titration experiments confirm that the oxazoline or imine groups are the sites of metal complexation.

Item type: Article
ID code: 31968
Keywords: ferrocene, oxazoline, electrochemistry, sensors, molecular recognition, electrochemical recognition, supramolecular systems, conjugated link, lariat ethers, crown ethers, ligands, molecules, chemistry, magnesium, behaviour, Pharmacy and materia medica, Materials Chemistry, Biochemistry, Organic Chemistry, Physical and Theoretical Chemistry, Inorganic Chemistry
Subjects: Medicine > Pharmacy and materia medica
Department: Faculty of Science > Strathclyde Institute of Pharmacy and Biomedical Sciences
Depositing user: Pure Administrator
Date Deposited: 13 Jul 2011 08:57
Last modified: 10 Dec 2015 20:11

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