{
  "abstract": "The limited redox chemistry of rare-earth (RE) elements means that multi-electron transfer reactions with RE compounds are a major synthetic challenge. Here, we demonstrate multi-electron reduction of a borole in two complementary RE reaction systems. In the first approach, the dimetallic lanthanum(iii) compound [(η5-C5iPr5)La(µ:η6:η6-C6H6)La(η5-C5iPr5)], containing a benzene tetra-anion ligand, reduces two equivalents of the ferrocenyl–borole FcBC2(SiMe3)2C2Me2 (1) to give the double sandwich complex [{(C5iPr5)RE}FcBC2(SiMe3)2C2Me2] (3-RE, RE = La), containing a 6π-aromatic borolide di-anion. In the second, complementary reaction type, combining KC8 with 1 and the half-sandwich complexes [(C5iPr5)RE(BH4)2(THF)] (RE = Y, La, Dy) also gives 3-RE but with a broader range of rare-earth elements. In 3-RE, evidence for two-electron reduction of the borole is supported by comparisons with the magnesium borolide [Mg(FcBC2(SiMe3)2C2Me2)(THF)3] (2). In contrast, salt-metathesis approaches to 3-RE were ineffective, with alkali metal reduction of the borole proving to be unsuccessful, and 2 does not undergo salt metathesis with rare-earth precursors. The dysprosium analogue 3-Dy exhibits single-molecule magnet behaviour, with an effective barrier of 1222(8) cm−1 and magnetic hysteresis up to 60 K.",
  "abstract_shown": true,
  "affiliations": [
    "Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China Xiyuan Avenue 2006 Chengdu 611731 China",
    "Key Laboratory of Bioinorganic and Synthetic Chemistry of the Ministry of Education, School of Chemistry, IGCME, GBRCE for Functional Molecular Engineering, Sun Yat-Sen University Guangzhou 510006 China",
    "Department of Chemistry, School of Life Sciences, University of Sussex Brighton BN1 9QR UK"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 10,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Xiao-Han Peng"
    },
    {
      "affs": [
        0
      ],
      "name": "Tao Shang"
    },
    {
      "affs": [
        1
      ],
      "name": "Yan-Cong Chen",
      "orcid": "0000-0001-5047-3445"
    },
    {
      "affs": [
        2
      ],
      "name": "Arpan Mondal"
    },
    {
      "affs": [
        0
      ],
      "name": "Ming Liu"
    },
    {
      "affs": [
        0
      ],
      "name": "Yu-Han Du"
    },
    {
      "affs": [
        0
      ],
      "name": "Ying Liu"
    },
    {
      "affs": [
        1
      ],
      "name": "Ming-Liang Tong",
      "orcid": "0000-0003-4725-0798"
    },
    {
      "affs": [
        2
      ],
      "name": "Richard A. Layfield",
      "orcid": "0000-0002-6020-0309"
    },
    {
      "affs": [
        0
      ],
      "name": "Fu-Sheng Guo",
      "orcid": "0000-0001-7190-4160"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/d14ftpkymdx31.bib",
  "cited_by": 0,
  "doi": "10.1039/d6sc05163d",
  "fulltext_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC13539729/",
  "id": "d14ftpkymdx31",
  "issns": [
    "2041-6520",
    "2041-6539"
  ],
  "landing_url": "https://doi.org/10.1039/d6sc05163d",
  "language": "en",
  "licence": "CC-BY-3.0",
  "licence_label": "CC BY 3.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/3.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Chemistry"
    ],
    [
      "openalex",
      "1605|Organoboron and organosilicon chemistry"
    ]
  ],
  "openalex": "W7204440721",
  "pdf_url": "https://pubs.rsc.org/sc/article-pdf/doi/10.1039/D6SC05163D/13722730/d6sc05163d.pdf",
  "pmcid": "PMC13539729",
  "pmid": "42694809",
  "published": "2026-08-27",
  "publisher": "Royal Society of Chemistry",
  "ris": "https://research.draconitic.com/paper/d14ftpkymdx31.ris",
  "sources": [
    {
      "first_seen": "2026-10-31T12:23:44Z",
      "native_id": "PMC13539729",
      "source": "pmc",
      "url": "https://doi.org/10.1039/d6sc05163d"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1605|Organoboron and organosilicon chemistry",
      "subfield": "organic"
    }
  ],
  "title": "Synthesis of rare-earth borolide sandwich complexes by multi-electron borole reduction",
  "title_text": "Synthesis of rare-earth borolide sandwich complexes by multi-electron borole reduction",
  "type": "peer-reviewed",
  "updated_at": "2026-11-01T12:20:52Z",
  "url": "https://research.draconitic.com/paper/d14ftpkymdx31",
  "venue": "Chemical Science",
  "versions": []
}