Synthesis of first antimony porphycene and electrocatalytic hydrogen evolution driven by ligand-centered reduction

Zhi Zhang, Taro Fujioka, Taro Koide, Yoshio Yano, Toshikazu Ono, Yoshio Hisaeda

Research output: Contribution to journalArticlepeer-review

Abstract

For post-transition metal electrocatalytic H2 evolution reaction (HER), the new porphycene antimony complexes, Sb(III) octaethyl porphycene (OEPo) and Sb(V)OEPo-Br2, were prepared and evaluated. Electrochemical and electro-spectro measurements revealed that the two-step one-electron reduction processes of Sb(III)OEPo were indicated to be both ligand-centered and the irreversible reduction process observed for Sb(V)OEPo-Br2 was assigned to be the reduction from Sb(V)OEPo-Br2 to Sb(III)OEPo. Electrocatalytic HER happened at -1.0 V (vs. Ag/AgCl) under acidic conditions via the ligand-centered reductions. The electron accepting nature of the porphycene ligand enabled the utilization of a main-group element as a central element for the ligand-centered HER at anodically shifted potentials.

Original languageEnglish
Pages (from-to)2048-2053
Number of pages6
JournalBulletin of the Chemical Society of Japan
Volume94
Issue number8
DOIs
Publication statusPublished - Aug 2021

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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