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In all these products, the {Mo<jats:sub>2<\/jats:sub>E<jats:sub>2<\/jats:sub>} or {Mo<jats:sub>2<\/jats:sub>PE} moieties coordinate the Cu(I) center via a rare side\u2010on \u03b7<jats:sup>2<\/jats:sup>\u2010coordination mode. The X\u2010ray structure analyses of [(dppf)Cu(\u03bc<jats:sub>3<\/jats:sub>,\u03b7<jats:sup>2\u2009:\u20092\u2009:\u20091<\/jats:sup>\u2010PSb{CpMo(CO)<jats:sub>2<\/jats:sub>}<jats:sub>2<\/jats:sub>][BF<jats:sub>4<\/jats:sub>] demonstrate, for the first time, the utilization of an \u03b7<jats:sup>1<\/jats:sup>\u2010coordination mode for the ligand complex <jats:bold>C<\/jats:bold> to coordinate to the Cu(I) center. All the products were characterized by X\u2010ray crystallography, NMR and IR spectroscopy, mass spectrometry and elemental analysis. Electrochemical studies also revealed the formation of <jats:bold>1<\/jats:bold>\u2013<jats:bold>5<\/jats:bold>, and, further, to understand the structure and bonding of the products, theoretical calculations using density functional theory (DFT) were conducted.<\/jats:p>","DOI":"10.1002\/chem.202303455","type":"journal-article","created":{"date-parts":[[2023,12,27]],"date-time":"2023-12-27T06:28:15Z","timestamp":1703658495000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Cu(I) Complexes Comprising tetrahedral Mo<sub>2<\/sub>E<sub>2<\/sub> or Mo<sub>2<\/sub>PE units (E=P, As, Sb) as Chelating Ligands"],"prefix":"10.1002","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7359-8926","authenticated-orcid":false,"given":"Bijan","family":"Mondal","sequence":"first","affiliation":[{"name":"Institute of Inorganic Chemistry University of Regensburg  93040 Regensburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2182-5020","authenticated-orcid":false,"given":"Manfred","family":"Scheer","sequence":"additional","affiliation":[{"name":"Institute of Inorganic Chemistry University of Regensburg  93040 Regensburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,1,11]]},"reference":[{"key":"e_1_2_9_1_1","unstructured":"\u00a0"},{"key":"e_1_2_9_2_2","doi-asserted-by":"publisher","DOI":"10.1021\/ar970317c"},{"key":"e_1_2_9_3_2","doi-asserted-by":"publisher","DOI":"10.1039\/b718179p"},{"key":"e_1_2_9_4_1","unstructured":"\u00a0"},{"key":"e_1_2_9_5_2","first-page":"1","volume-title":"Transition Metals in Supramolecular Chemistry; Perspectives in Supramolecular Chemistry","author":"Saalfrank R. 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