Near-Infrared Emitting Chiral Tetranuclear Erbium Cluster Containing Soft-Base Bisthiazolate Linkers
A tetraerbium cluster containing soft-base dianionic 4,8-difluorobenzo [1,2-<i>d</i>:5,4-<i>d′</i>]bisthiazole-2,6-dithiol (H<sub>2</sub><b>L</b>) ligands, μ-OH, and coordinated 1,2-dimethoxyethane (DME) of the general formula {Er<sub>4</sub&g...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-05-01
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| Series: | Molbank |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1422-8599/2025/2/M2015 |
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| Summary: | A tetraerbium cluster containing soft-base dianionic 4,8-difluorobenzo [1,2-<i>d</i>:5,4-<i>d′</i>]bisthiazole-2,6-dithiol (H<sub>2</sub><b>L</b>) ligands, μ-OH, and coordinated 1,2-dimethoxyethane (DME) of the general formula {Er<sub>4</sub>(μ-<b>L</b>)<sub>4</sub>(μ-OH)<sub>4</sub>(DME)<sub>4</sub>} (<b>1</b>) was synthesized using a one-pot method. X-ray analysis revealed that <b>1</b> is an asymmetrical tetramer in which there are four μ<sub>2</sub>-bridging bisthiazole ligands and four μ<sub>2</sub>-bridging hydroxide anions per four erbium ions. The molecule of <b>1</b> has inherent chirality, and the geometry of intramolecular F…F short contacts implies the formation of a classical halogen bond. Upon excitation by a 375 nm diode laser, compound <b>1</b> shows the moderate metal-centered emission of Er<sup>3+</sup> ions that peaked at 1530 nm. |
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| ISSN: | 1422-8599 |