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In this context, we present here a systematic appraisal of group\u200513 metallo\u2010ligands of the type [(NON)E]<jats:sup>\u2212<\/jats:sup> (NON=4,5\u2010bis(2,6\u2010di<jats:italic>iso<\/jats:italic>propylanilido)\u20102,7\u2010di\u2010tert\u2010butyl\u20109,9\u2010dimethylxanthene) for E=Al, Ga and In, through a comparison of structural and spectroscopic parameters associated with the <jats:italic>trans<\/jats:italic> L or X ligands in linear <jats:italic>d<\/jats:italic><jats:sup>10<\/jats:sup> complexes of the types LM{E(NON)} and XM\u2032{E(NON)}. These studies are facilitated by convenient syntheses (from the In(I) precursor, InCp) of the potassium indyl species [{K(NON)In}\u22c5KCp]<jats:sub><jats:italic>n<\/jats:italic><\/jats:sub> (<jats:bold>1<\/jats:bold>) and [(18\u2010crown\u20106)<jats:sub>2<\/jats:sub>K<jats:sub>2<\/jats:sub>Cp] [(NON)In] (<jats:bold>1\u2032<\/jats:bold>), and lead to the first structural characterisation of Ag\u2212In and Hg\u2212E (E=Al, In) covalent bonds. The resulting structural, spectroscopic and quantum chemical probes of Ag\/Hg complexes are consistent with markedly stronger \u03c3\u2010donor capabilities of the aluminyl ligand, [(NON)Al]<jats:sup>\u2212<\/jats:sup>, over its gallium and indium counterparts.<\/jats:p>","DOI":"10.1002\/anie.202404527","type":"journal-article","created":{"date-parts":[[2024,3,28]],"date-time":"2024-03-28T10:57:27Z","timestamp":1711623447000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Mercury\u2010Group\u200513 Metal Covalent Bonds: A Systematic Comparison of Aluminyl, Gallyl and Indyl Metallo\u2010ligands"],"prefix":"10.1002","volume":"63","author":[{"given":"Liam P.","family":"Griffin","sequence":"first","affiliation":[{"name":"Inorganic Chemistry Laboratory, Department of Chemistry University of Oxford  South Parks Road Oxford OX1 3QR UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mathias A.","family":"Ellwanger","sequence":"additional","affiliation":[{"name":"Inorganic Chemistry Laboratory, Department of Chemistry University of Oxford  South Parks Road Oxford OX1 3QR UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Agamemnon E.","family":"Crumpton","sequence":"additional","affiliation":[{"name":"Inorganic Chemistry Laboratory, Department of Chemistry University of Oxford  South Parks Road Oxford OX1 3QR UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matthew M. 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