{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T20:45:59Z","timestamp":1788468359609,"version":"build-2803163510"},"reference-count":61,"publisher":"Wiley","issue":"62","license":[{"start":{"date-parts":[[2025,10,8]],"date-time":"2025-10-08T00:00:00Z","timestamp":1759881600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["chemistry-europe.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Chemistry A European J"],"published-print":{"date-parts":[[2025,11,6]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Inverse sandwich arene complexes of rare earth metals have gained notable interest due to their unique electronic properties. In these complexes, an arene ligand bridges two metal centres, storing 0, 2, or 4 electrons, which is the basis for unique reactivity. Herein, we report on the reactivity of [(\n                    <jats:sup>DIPeP<\/jats:sup>\n                    BDI)Ln]\n                    <jats:sub>2<\/jats:sub>\n                    (\n                    <jats:italic>\u03b7<\/jats:italic>\n                    <jats:sup>6<\/jats:sup>\n                    ,\n                    <jats:italic>\u03b7<\/jats:italic>\n                    <jats:sup>6<\/jats:sup>\n                    \u2010benzene) (\n                    <jats:bold>II<\/jats:bold>\n                    \u2010Ln, Ln\u00a0=\u00a0Yb or Sm) and in situ reduced [(\n                    <jats:sup>DIPeP<\/jats:sup>\n                    BDI)SmI]\n                    <jats:sub>2<\/jats:sub>\n                    (\n                    <jats:bold>V<\/jats:bold>\n                    ) (\n                    <jats:sup>DIPeP<\/jats:sup>\n                    BDI\u00a0=\u00a0HC[C(Me)N\u2010DIPeP]\n                    <jats:sub>2<\/jats:sub>\n                    , DIPeP\u00a0=\u00a02,6\u2010CHEt\n                    <jats:sub>2<\/jats:sub>\n                    \u2010phenyl). The Yb\n                    <jats:sup>II<\/jats:sup>\n                    \u2010benzene\n                    <jats:sup>2\u2212<\/jats:sup>\n                    \u2010Yb\n                    <jats:sup>II<\/jats:sup>\n                    complex (\n                    <jats:bold>II<\/jats:bold>\n                    \u2010Yb) reacted smoothly with biphenyl, naphthalene, anthracene, and COT, giving a range of new Yb\n                    <jats:sup>II<\/jats:sup>\n                    complexes with bridging arene or COT ligands. However, due to much stronger Sm\u2010arene bonding in\n                    <jats:bold>II<\/jats:bold>\n                    \u2010Sm, which should be regarded as a Sm\n                    <jats:sup>III<\/jats:sup>\n                    \u2010benzene\n                    <jats:sup>4\u2212<\/jats:sup>\n                    \u2010Sm\n                    <jats:sup>III<\/jats:sup>\n                    complex, this reagent only reacted with substrates that can be reduced easily (anthracene and COT). Interestingly, reaction with anthracene gave a Sm\n                    <jats:sup>II<\/jats:sup>\n                    \u2010anthracene\n                    <jats:sup>2\u2212<\/jats:sup>\n                    \u2010Sm\n                    <jats:sup>II<\/jats:sup>\n                    complex, showing that the benzene\n                    <jats:sup>4\u2212<\/jats:sup>\n                    is able to reduce Sm\n                    <jats:sup>III<\/jats:sup>\n                    to Sm\n                    <jats:sup>II<\/jats:sup>\n                    . In situ reduced [(\n                    <jats:sup>DIPeP<\/jats:sup>\n                    BDI)SmI]\n                    <jats:sub>2<\/jats:sub>\n                    (\n                    <jats:bold>V<\/jats:bold>\n                    ) can be considered a (\n                    <jats:sup>DIPeP<\/jats:sup>\n                    BDI)Sm\n                    <jats:sup>I<\/jats:sup>\n                    synthon, which reacted smoothly with toluene, biphenyl, or 1,3,5\u2010triphenyl\u2010benzene and affords a series of Sm\n                    <jats:sup>III<\/jats:sup>\n                    \u2010arene\n                    <jats:sup>4\u2212<\/jats:sup>\n                    \u2010Sm\n                    <jats:sup>III<\/jats:sup>\n                    complexes. However, reaction with pyrene gave an Sm\n                    <jats:sup>II<\/jats:sup>\n                    \u2010pyrene\n                    <jats:sup>2\u2212<\/jats:sup>\n                    \u2010Sm\n                    <jats:sup>II<\/jats:sup>\n                    product. All complexes have been fully characterized with X\u2010ray diffraction.\n                  <\/jats:p>","DOI":"10.1002\/chem.202502710","type":"journal-article","created":{"date-parts":[[2025,10,8]],"date-time":"2025-10-08T08:29:43Z","timestamp":1759912183000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Syntheses and Reactivity of Yb and Sm Inverse Sandwich Arene Complexes"],"prefix":"10.1002","volume":"31","author":[{"given":"Sandeep Kumar","family":"Thakur","sequence":"first","affiliation":[{"name":"Inorganic and Organometallic Chemistry Friedrich\u2010Alexander\u2010Universit\u00e4t Erlangen\u2010N\u00fcrnberg  Egerlandstrasse 1 91058 Erlangen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jens","family":"Langer","sequence":"additional","affiliation":[{"name":"Inorganic and Organometallic Chemistry Friedrich\u2010Alexander\u2010Universit\u00e4t Erlangen\u2010N\u00fcrnberg  Egerlandstrasse 1 91058 Erlangen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3997-1440","authenticated-orcid":false,"given":"Sjoerd","family":"Harder","sequence":"additional","affiliation":[{"name":"Inorganic and Organometallic Chemistry Friedrich\u2010Alexander\u2010Universit\u00e4t Erlangen\u2010N\u00fcrnberg  Egerlandstrasse 1 91058 Erlangen 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