An in situ spectroelectrochemical study of the dimeric phthalocyanines [(SiPc)2O][OSiHx3]2, [(SiPc)2O][OSiHx3]2·+, and [(SiPc)2O][OSiHx3]22+

Evgenia Dmitrieva; Benjamin W. Sturtz; Yang Yang; Ping Zhang; Lothar Dunsch; Malcolm E. Kenney

Electrochemistry Communications (Jul 2021)

An in situ spectroelectrochemical study of the dimeric phthalocyanines [(SiPc)2O][OSiHx3]2, [(SiPc)2O][OSiHx3]2·+, and [(SiPc)2O][OSiHx3]22+

Evgenia Dmitrieva,
Benjamin W. Sturtz,
Yang Yang,
Ping Zhang,
Lothar Dunsch,
Malcolm E. Kenney

Affiliations

Evgenia Dmitrieva: Leibniz Institute for Solid State and Materials Research (IFW) Dresden, Nanoscale Chemistry, Center of Spectroelectrochemistry, Helmholtzstrasse 20, 01069 Dresden, Germany; Corresponding authors.
Benjamin W. Sturtz: Department of Chemistry, Case Western Reserve University, Cleveland, OH 44106, United States; Corresponding authors.
Yang Yang: Department of Chemistry, Case Western Reserve University, Cleveland, OH 44106, United States
Ping Zhang: Department of Chemistry, Case Western Reserve University, Cleveland, OH 44106, United States
Lothar Dunsch: Leibniz Institute for Solid State and Materials Research (IFW) Dresden, Nanoscale Chemistry, Center of Spectroelectrochemistry, Helmholtzstrasse 20, 01069 Dresden, Germany
Malcolm E. Kenney: Department of Chemistry, Case Western Reserve University, Cleveland, OH 44106, United States; Corresponding authors.

Journal volume & issue: Vol. 128
p. 107048

Abstract

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An in situ spectroelectrochemical study of the oxidation of the μ-oxosilicon phthalocyanine dimer [(SiPc)2O][OSiHx3]2 utilizing cyclic voltammetry, electron spin resonance spectroscopy, and visible–near infrared spectroscopy has been carried out. The results of this study show that oxidation of the dimer yields the paramagnetic radical dimer [(SiPc)2O][OSiHx3]2·+ and then the diamagnetic dimer [(SiPc)2O][OSiHx3]22+. The study shows that the rings of [(SiPc)2O][OSiHx3]22+ are antiferromagnetically coupled.

Published in Electrochemistry Communications

ISSN: 1388-2481 (Print); 1873-1902 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Industrial electrochemistry; Science: Chemistry
Website: https://www.journals.elsevier.com/electrochemistry-communications

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