{
  "abstract": "New binuclear rare-earth complexes [(μ 2 -η 5 :η 5 ;κ 2 :κ 2 -N,C-L)Ln2(THF)4] (Ln = Y 3+ (1Y), Tb 3+ (1Tb), Dy 3+ (1Dy), Er 3+ (1Er)) containing a hexaanionic dibenzopetalenebridged bis(carbazolyl) framework were obtained via spontaneous self-assembly in the reactions of Ln(CH2SiMe3)3(THF)2 with equimolar amount of 3,6-di-tertbutyl-1,8-bis(phenylethynyl)-9H-carbazole. Two Ln 3+ ions are -anti-η 5 :η 5 -coordinated with the dianionic dibenzopentalene fragment resulting from a series of successive intramolecular ortho-CH activations in the phenyl rings of the ethynyl substituents followed by intermolecular dimerization involving Ln-C Ar bond addition to a C≡C triple bond. Magnetic investigations show that 1Dy behaves as a genuin single-molecule magnet (SMM) with relaxation dynamics described by a multicomponent model dominated at high temperature by an Orbach process, yielding an effective barrier of 689 cm -¹. In contrast, 1Tb and 1Er exhibit only field-induced slow magnetic relaxation at low temperature. Ab initio calculations reveal a substantially larger crystal-field splitting and stronger axial anisotropy for Dy³⁺ than for Er³⁺ analogue. Weak antiferromagnetic interactions between the lanthanide centers were identified with J = -0.23 cm -¹ for 1Dy, -0.06 cm -1 for 1Tb, and -0.28 cm -¹ for 1Er. This indicats that the slow magnetic relaxation is governed primarily by single-ion crystal-field effects rather than exchange coupling.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 10,
  "authors": [
    {
      "name": "Hamza Zakaria"
    },
    {
      "name": "Gautier Félix"
    },
    {
      "name": "Dmitry Lyubov"
    },
    {
      "name": "Max Kallio"
    },
    {
      "name": "Veacheslav Vieru"
    },
    {
      "name": "Anna Vologzhanina"
    },
    {
      "name": "Rinat Aysin"
    },
    {
      "name": "Yannick Guari"
    },
    {
      "name": "Joulia Larionova"
    },
    {
      "name": "Alexander Trifonov"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fnzfnd6ejg9xb.bib",
  "cited_by": 0,
  "doi": "10.1039/d6dt01110a",
  "fulltext_url": null,
  "id": "fnzfnd6ejg9xb",
  "issns": [
    "1477-9226",
    "1477-9234"
  ],
  "landing_url": "https://hal.science/hal-05768860v1",
  "language": "en",
  "licence": "CC-BY-NC-4.0",
  "licence_label": "CC BY-NC 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.chim"
    ],
    [
      "openalex",
      "1605|Organometallic Complex Synthesis and Catalysis"
    ]
  ],
  "openalex": "W7165679696",
  "pdf_url": "https://hal.science/hal-05768860/document",
  "pmcid": null,
  "pmid": "42385240",
  "published": "2026-06-23",
  "publisher": "Royal Society of Chemistry",
  "ris": "https://research.draconitic.com/paper/fnzfnd6ejg9xb.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:43Z",
      "native_id": "hal-05768860",
      "source": "hal",
      "url": "https://hal.science/hal-05768860v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1605|Organometallic Complex Synthesis and Catalysis",
      "subfield": "organic"
    }
  ],
  "title": "Stepwise C–H bond activations and assembly of binuclear Ln3+ species coordinated by a hexaanionic anti-η5:η5-dibenzopentalene-bridged bis(carbazolyl) framework",
  "title_text": "Stepwise C–H bond activations and assembly of binuclear Ln3+ species coordinated by a hexaanionic anti-η5:η5-dibenzopentalene-bridged bis(carbazolyl) framework",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:43Z",
  "url": "https://research.draconitic.com/paper/fnzfnd6ejg9xb",
  "venue": "Dalton Transactions",
  "versions": []
}