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Single crystal XRD reveals a remarkable asymmetrically \u03b7<jats:sup>3<\/jats:sup>,\u03b7<jats:sup>6<\/jats:sup>\u2010slipped sandwich structure. The magnetic properties of the [Ni(C<jats:sub>6<\/jats:sub>H<jats:sub>6<\/jats:sub>)<jats:sub>2<\/jats:sub>]<jats:sup>+<\/jats:sup> cation were determined in solution and in the gas phase. Oxidation with the synergistic Ag<jats:sup>+<\/jats:sup>\/0.5\u2005l<jats:sub>2<\/jats:sub> system led to the salt [Ni(C<jats:sub>6<\/jats:sub>H<jats:sub>6<\/jats:sub>)<jats:sub>2<\/jats:sub>]<jats:sup>2+<\/jats:sup>([WCA]<jats:sup>\u2212<\/jats:sup>)<jats:sub>2<\/jats:sub>. All products were fully characterized by means of IR, Raman, NMR\/EPR, single crystal and powder XRD.<\/jats:p>","DOI":"10.1002\/anie.202211555","type":"journal-article","created":{"date-parts":[[2022,10,5]],"date-time":"2022-10-05T11:46:02Z","timestamp":1664970362000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Isolation and Characterization of the Homoleptic Nickel(I) and Nickel(II) Bis\u2010benzene Sandwich Cations"],"prefix":"10.1002","volume":"61","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1670-4099","authenticated-orcid":false,"given":"Manuel","family":"Schmitt","sequence":"first","affiliation":[{"name":"Institut f\u00fcr Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF) Albert-Ludwigs-Universit\u00e4t Freiburg  Albertstr. 21 79104 Freiburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2610-0195","authenticated-orcid":false,"given":"Maximilian","family":"Mayl\u00e4nder","sequence":"additional","affiliation":[{"name":"Institut f\u00fcr Physikalische Chemie Albert-Ludwigs-Universit\u00e4t Freiburg  Albertstr. 21 79104 Freiburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0641-3549","authenticated-orcid":false,"given":"Tim","family":"Heizmann","sequence":"additional","affiliation":[{"name":"Institut f\u00fcr Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF) Albert-Ludwigs-Universit\u00e4t Freiburg  Albertstr. 21 79104 Freiburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2990-974X","authenticated-orcid":false,"given":"Sabine","family":"Richert","sequence":"additional","affiliation":[{"name":"Institut f\u00fcr Physikalische Chemie Albert-Ludwigs-Universit\u00e4t Freiburg  Albertstr. 21 79104 Freiburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christine","family":"B\u00fclow","sequence":"additional","affiliation":[{"name":"Abteilung f\u00fcr Hochempfindliche R\u00f6ntgenspektroskopie Helmholtz-Zentrum Berlin f\u00fcr Materialien und Energie  Albert-Einstein-Stra\u00dfe 15 12489 Berlin Germany"},{"name":"Physikalisches Institut Universit\u00e4t Freiburg  Hermann-Herder-Stra\u00dfe 3 79104 Freiburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5050-3026","authenticated-orcid":false,"given":"Konstantin","family":"Hirsch","sequence":"additional","affiliation":[{"name":"Abteilung f\u00fcr Hochempfindliche R\u00f6ntgenspektroskopie Helmholtz-Zentrum Berlin f\u00fcr Materialien und Energie  Albert-Einstein-Stra\u00dfe 15 12489 Berlin Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4038-0584","authenticated-orcid":false,"given":"Vicente","family":"Zamudio\u2010Bayer","sequence":"additional","affiliation":[{"name":"Abteilung f\u00fcr Hochempfindliche R\u00f6ntgenspektroskopie Helmholtz-Zentrum Berlin f\u00fcr Materialien und Energie  Albert-Einstein-Stra\u00dfe 15 12489 Berlin Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0976-6902","authenticated-orcid":false,"given":"J. 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