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Electrochemical Characteristics of 4‐oxo‐4 H ‐pyran‐dicarboxylic Acid (Chelidonic Acid) and some of its Metal Complexes
Author(s) -
Jadreško Dijana,
Kakša Matija,
Popović Zora
Publication year - 2017
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201600355
Subject(s) - electrochemistry , cyclic voltammetry , chemistry , electron transfer , metal , inorganic chemistry , electrode , voltammetry , aqueous solution , metal ions in aqueous solution , analytical chemistry (journal) , nuclear chemistry , organic chemistry
A few novel metal complexes of chelidonic acid (chelH 2 ), namely [Ca(chel)(H 2 O) 3 ] ( 1 ), [Cu(chel)(H 2 O) 5 ] ⋅ 2H 2 O ( 2 ) and [VO(chel)(H 2 O) 3 ] ⋅ 2H 2 O ( 3 ) were prepared, identified by elemental analysis and characterized by electrochemical methods. IR‐spectra and thermal stability in solid state are discussed as well. The electrochemical characteristics of the free chelidonic acid and its complexes 1 – 3 were studied by (cyclic) square‐wave voltammetry, on static mercury drop electrode (SMDE) and paraffin‐impregnated graphite electrode (PIGE), in aqueous media over a wide pH range. The reduction of chelidonic acid on SMDE is a kinetically controlled electrode reaction, occurring with the transfer of one electron and two protons for 1