{
  "abstract": "Reaction of [(BDI*)MgNa]₂ with (Am*YbI)₂ in methylcyclohexane led to the precipitation of NaI and quantitative formation of (BDI*)Mg-Yb(Am*) (1-Yb); BDI* = HC[C(tBu)N(DIPeP)]₂, DIPeP = 2,6-Et₂CH-phenyl; Am* = tBuC(N-DIPP)₂, DIPP = 2,6-iPr-phenyl. Complex 1-Yb features a long unsupported 2c-2e Mg-Yb bond of 3.302 Å and crystallizes isomorphous to (BDI*)Mg-Ca(Am*) (1-Ca). The formal Mg⁰-YbII oxidation states in 1-Yb are confirmed by effective-oxidation-state analysis but the low reliability index of 68.0% indicates that this description is not fully representative of the electron distribution. Analysis of the electron density shows significant Mg⁰ → YbII electron transfer and therefore the complex has partial MgI-YbI character. EDA-NOCV analysis suggests that bonding in 1-Yb is best pictured as a combination of neutral open-shell radicals (BDI*)Mg˙/(Am*)Yb˙. Accordingly, (BDI*)Mg acts as an X-type ligand for Yb(Am*). The long, polarized Mg δ--Yb δ+ bond in 1-Yb is highly reactive. The thermal decomposition and reactivity of 1-Yb with N₂O, NH₃, 1,1-diphenylethylene, trans-stilbene and anthracene have been studied. Comparison with the reactivity of 1-Ca shows strong similarities, but also important differences. Most reactants oxidize the Mg⁰ centre in 1-Yb and 1-Ca and produce similar complexes that generally crystallize isomorphous. However, N₂O can also oxidize the YbII centre, resulting in paramagnetic YbIII products. In all cases, the Mg-Yb and Mg-Ca bonds in 1-Yb and 1-Ca are considerably more reactive than the unpolarized Mg-Mg bond in complexes of type (BDI)Mg-Mg(BDI).",
  "abstract_shown": true,
  "affiliations": [
    "Inorganic and Organometallic Chemistry, Universität Erlangen-Nürnberg Egerlandstrasse 1 Erlangen 91058 Germany sjoerd.harder@fau.de.",
    "Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Facultat de Ciències, Universitat de Girona (UdG) C/Maria Aurèlia Capmany 69 Girona 17003 Catalonia Spain.",
    "Eenheid Algemene Chemie (ALGC), Vrije Universiteit Brussel (VUB) Brussels 1050 Belgium."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Sandeep Kumar Thakur",
      "orcid": "0000-0001-9103-780X"
    },
    {
      "affs": [
        0
      ],
      "name": "Tanuja Tewari",
      "orcid": "0000-0001-9768-125X"
    },
    {
      "affs": [
        1
      ],
      "name": "Nil Roig",
      "orcid": "0000-0003-4688-4529"
    },
    {
      "affs": [
        0
      ],
      "name": "Jens Langer",
      "orcid": "0000-0002-2895-4979"
    },
    {
      "affs": [
        2
      ],
      "name": "Mercedes Alonso",
      "orcid": "0000-0002-7076-2305"
    },
    {
      "affs": [
        0
      ],
      "name": "Sjoerd Harder",
      "orcid": "0000-0002-3997-1440"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/c93afqr8adw1w.bib",
  "cited_by": 0,
  "doi": "10.1039/d6sc05592c",
  "fulltext_url": "https://europepmc.org/articles/PMC13636282",
  "id": "c93afqr8adw1w",
  "issns": [
    "2041-6520",
    "2041-6539"
  ],
  "landing_url": "https://europepmc.org/article/MED/42835594",
  "language": "eng",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "1605|Coordination Chemistry and Organometallics"
    ]
  ],
  "openalex": "W7213876373",
  "pdf_url": "https://europepmc.org/articles/PMC13636282?pdf=render",
  "pmcid": "PMC13636282",
  "pmid": "42835594",
  "published": "2026-09-21",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/c93afqr8adw1w.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:10Z",
      "native_id": "MED:42835594",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42835594"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1605|Coordination Chemistry and Organometallics",
      "subfield": "organic"
    }
  ],
  "title": "Comparison of MgYb and Mg-Ca bonding: structures, electronic analyses and reactivities.",
  "title_text": "Comparison of MgYb and Mg-Ca bonding: structures, electronic analyses and reactivities.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:10Z",
  "url": "https://research.draconitic.com/paper/c93afqr8adw1w",
  "venue": "Chemical science",
  "versions": []
}