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Equilibria in Cu(CH 3 CO 2 ) 2 ‐pyridine‐water system. Spectrophotometric, conductometric, and EPR study of the Cu(CH 3 CO 2 ) 2 ‐pyridine‐water system
Author(s) -
Szpakowska Maria,
Uruska I.,
Stefańczyk I.
Publication year - 1986
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19865370621
Subject(s) - chemistry , pyridine , aqueous solution , electron paramagnetic resonance , dissociation (chemistry) , inorganic chemistry , solvent , electrolyte , ion , molecule , analytical chemistry (journal) , electrode , organic chemistry , nuclear magnetic resonance , physics
Electronic spectra (340–800 nm; 298.2 K), liquid (298.2 K) and frozen solution (77 K) EPR spectra and electrolytic conductivities (298.2 K) have been measured for Cu(CH 3 CO 2 ) 2 over the whole range of compositions of the mixed pyridine‐water solvent. The results have been interpreted in terms of the possible coordination equilibria in the solution. They support the strong tendency of the Cu II ion to coordinate pyridine molecules in aqueous solutions, revealed by other Cu II salts. Even small amounts of pyridine were found to withdraw the electrolytic dissociation of the aqueous Cu(CH 3 CO 2 ) 2 solutions, probably, through the enhancement of the Cu II ion interactions.