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We report a new way for the synthesis of sandwich type complexes [Re(\u03b7<jats:sup>6<\/jats:sup>\u2010arene)<jats:sub>2<\/jats:sub>]<jats:sup>+<\/jats:sup> and [Re(\u03b7<jats:sup>6<\/jats:sup>\u2010arene)(\u03b7<jats:sup>6<\/jats:sup>\u2010benzene)]<jats:sup>+<\/jats:sup> from [Re(\u03b7<jats:sup>6<\/jats:sup>\u2010napht)<jats:sub>2<\/jats:sub>]<jats:sup>+<\/jats:sup> and [Re(\u03b7<jats:sup>6<\/jats:sup>\u2010napht)(\u03b7<jats:sup>6<\/jats:sup>\u2010benzene)]<jats:sup>+<\/jats:sup>, with functionalized arenes and pharmaceuticals. N\u2010methylpyrrolidine (NMP) facilitates the substitution of naphthalene with the incoming arene. A series of fully characterized rhenium sandwich complexes with simple arenes, such as aniline, as well as with active compounds like lidocaine and melatonin are presented. With these rhenium compounds in hand, the radioactive sandwich complexes [<jats:sup>99m<\/jats:sup>Tc(\u03b7<jats:sup>6<\/jats:sup>\u2010pharm)<jats:sub>2<\/jats:sub>]<jats:sup>+<\/jats:sup> (pharm=pharmaceutical) can be unambiguously confirmed. The direct labelling of pharmaceuticals with <jats:sup>99m<\/jats:sup>Tc through \u03b7<jats:sup>6<\/jats:sup>\u2010coordination to phenyl rings and the confirmation of the structures with the rhenium homologues opens a path into molecular theranostics.<\/jats:p>","DOI":"10.1002\/chem.202103566","type":"journal-article","created":{"date-parts":[[2021,11,25]],"date-time":"2021-11-25T03:12:30Z","timestamp":1637809950000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Naphthalene Exchange in [Re(\u03b7<sup>6<\/sup>\u2010napht)<sub>2<\/sub>]<sup>+<\/sup> with Pharmaceuticals Leads to Highly Functionalized Sandwich Complexes [M(\u03b7<sup>6<\/sup>\u2010pharm)<sub>2<\/sub>]<sup>+<\/sup> (M=Re\/<sup>99m<\/sup>Tc)"],"prefix":"10.1002","volume":"28","author":[{"given":"Qaisar","family":"Nadeem","sequence":"first","affiliation":[{"name":"Department of Chemistry University of Zurich  Winterthurerstr. 190 8057 Zurich 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