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ISSN 1998-9539

The Role of Oxygen in Electrochemical Reduction of Double-Decker Phthalocyaninates of Lanthanides

S. L. Selektor,a@ A. V. Shokurov,a A. A. Revina,a V. V. Arslanov,a Yu. G. Gorbunova,a,b and A. Yu. Tsivadzea,b

Dedicated to Prof. Mir Wais Hosseini, who has made a significant contributionto macroheterocycles chemistry, on the occasion of his anniversary

aA.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS, 119071 Moscow, Russia

bN.S. Kurnakov Institute of General and Inorganic Chemistry RAS, 119991 Moscow, Russia

@Corresponding author E-mail: sofs@list.ru

 

DOI: 10.6060/mhc150765s

Macroheterocycles 2015 8(2) 135-142

 

The influence of air oxygen on the processes of electrochemical reduction of double-decker 15-crown-5 substituted lanthanide phthalocyaninates in solutions and Langmuir-Blodgett films on electrode surfaces was revealed. The multi-stage nature of the process, associated with formation of the intermediate oxygen-containing complexes of the studied compounds in the presence of atmospheric oxygen, was confirmed by cyclic voltammetry and spectroelectrochemical measurements. It was shown that spectra of the electrochemically reduced forms of complexes coincide with ones obtained via chemical reduction only upon application of extremely negative potentials or in the absence of air oxygen in electrolyte.

 

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