Synthesis and optical properties of antimony(V) complexes of a trianionic N2O2-type tetradentate dipyrrin ligand

Tomohiro Agou; Shunsuke Kuroiwa; Hiroki Fukumoto; Tatsuya Nabeshima

doi:10.1039/D4CC00630E

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Synthesis and optical properties of antimony(v) complexes of a trianionic N₂O₂-type tetradentate dipyrrin ligand†‡

Tomohiro Agou,

*^a Shunsuke Kuroiwa,^b Hiroki Fukumoto

*^b and Tatsuya Nabeshima

*^c

Author affiliations

* Corresponding authors

^a Department of Material Science, Graduate School of Science, University of Hyogo, 3-2-1 Kouto, Kamigori-cho, Ako-gun, Hyogo 678-1297, Japan
E-mail: agou@sci.u-hyogo.ac.jp

^b Department of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Naka-narusawa, Hitachi, Ibaraki 316-8511, Japan
E-mail: hiroki.fukumoto.chem@vc.ibaraki.ac.jp

^c Institute of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
E-mail: nabesima@chem.tsukuba.ac.jp

Abstract

LSbCl₂, an air- and moisture-stable antimony(V)–dipyrrin complex at room temperature, was obtained by treating an excess amount (20 eq.) of SbCl₃ with a trianionic N₂O₂-type tetradentate dipyrrin ligand (L) under visible-light irradiation and O₂ atmosphere. The Cl ligands in LSbCl₂ were replaced by OH ligands via hydrolysis, yielding LSb(OH)₂. Further, the molecular structures and optical properties of the Sb(V)–dippyrin complexes were investigated. While LSbCl₂ was non-fluorescent, LSb(OH)₂ exhibited an intense red fluorescence with a photoluminescence quantum yield of 68%.

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Article information

DOI: https://doi.org/10.1039/D4CC00630E
Article type: Communication
Submitted: 06 Feb 2024
Accepted: 21 Mar 2024
First published: 26 Mar 2024

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Chem. Commun., 2024,60, 4557-4560

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Synthesis and optical properties of antimony(V) complexes of a trianionic N₂O₂-type tetradentate dipyrrin ligand

T. Agou, S. Kuroiwa, H. Fukumoto and T. Nabeshima, Chem. Commun., 2024, 60, 4557 DOI: 10.1039/D4CC00630E

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Chemical Communications