Synthesis, Structure, and Magnetic Properties of Rare-Earth Benzoborole Complexes

The first examples of benzoborole rare-earth ate complexes [BoRE­(COT)]­[Li­(DME)3] (3RE; Bo = benzoborole dianion; COT = cyclooctatetraene; RE = Y, Dy, Er; DME = 1,2-dimethoxyethane) with a sandwich structure have been synthesized by the reaction of a benzoborole dianion with RECl3 followed by trea...

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Bibliographic Details
Published inOrganometallics Vol. 40; no. 15; pp. 2394 - 2399
Main Authors Zhu, Dezhao, Wang, Mengmeng, Guo, Lulu, Shi, Wei, Li, Jianfeng, Cui, Chunming
Format Journal Article
LanguageEnglish
Published American Chemical Society 09.08.2021
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Summary:The first examples of benzoborole rare-earth ate complexes [BoRE­(COT)]­[Li­(DME)3] (3RE; Bo = benzoborole dianion; COT = cyclooctatetraene; RE = Y, Dy, Er; DME = 1,2-dimethoxyethane) with a sandwich structure have been synthesized by the reaction of a benzoborole dianion with RECl3 followed by treatment with cyclooctatetraene dipotassium salt. These complexes have been fully characterized by X-ray diffraction analysis and IR, UV–vis, and NMR spectroscopy. Remarkably, the Dy and Er complexes exhibit single-molecule-magnet behaviors with effective energy barriers (U eff) of 98 cm–1 (141 K) and 109 cm–1 (157 K), respectively, and their magnetic hysteresis loops were observed at 2 K.
ISSN:0276-7333
1520-6041
DOI:10.1021/acs.organomet.1c00337