{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,20]],"date-time":"2026-06-20T12:50:55Z","timestamp":1781959855535,"version":"3.54.5"},"reference-count":73,"publisher":"Wiley","issue":"23","license":[{"start":{"date-parts":[[2026,4,3]],"date-time":"2026-04-03T00:00:00Z","timestamp":1775174400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,4,3]],"date-time":"2026-04-03T00:00:00Z","timestamp":1775174400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["chemistry-europe.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Chemistry A European J"],"published-print":{"date-parts":[[2026,6,16]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Access to defined titanium(II) compounds is crucial for their use in synthesis and catalysis. Most established routes to Ti(II) compounds rely on the reduction of Ti(III) or Ti(IV), an approach that intrinsically limits atom efficiency and can introduce byproducts or lead to mixed\u2010valency complexes. Here, an alternative strategy for obtaining Ti(II) is presented, based on the oxidation of Ti metal by iodine. Ti diiodide formed in this reaction is subsequently complexed to afford the novel Ti(II) complex [Ti(py)\n                    <jats:sub>4<\/jats:sub>\n                    I\n                    <jats:sub>2<\/jats:sub>\n                    ] on a gram scale (&gt; 30\u00a0g, 50\u00a0mmol) in a highly atom\u2010efficient approach. Revision of the original synthesis of TiI\n                    <jats:sub>2<\/jats:sub>\n                    shows that excess Ti metal is required to prevent the formation of higher Ti iodides, enabling clean access to Ti(II) without reductive agents. The resulting Ti(II) complex serves as a synthetic entry point for Ti(II) chemistry, as illustrated by a ligand exchange reaction to form [Ti(2,2\u2032\u2010bipyridine)\n                    <jats:sub>2<\/jats:sub>\n                    I\n                    <jats:sub>2<\/jats:sub>\n                    ].\n                  <\/jats:p>","DOI":"10.1002\/chem.70955","type":"journal-article","created":{"date-parts":[[2026,4,3]],"date-time":"2026-04-03T07:39:20Z","timestamp":1775201960000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["[Ti(py)\n                    <sub>4<\/sub>\n                    I\n                    <sub>2<\/sub>\n                    ] as an Entry Point to Titanium(II) Chemistry via Titanium Metal Oxidation"],"prefix":"10.1002","volume":"32","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2650-5173","authenticated-orcid":false,"given":"Alexander","family":"Sedykh","sequence":"first","affiliation":[{"name":"Institute of Inorganic Chemistry and Crystallography Leipzig University  Leipzig Germany"},{"name":"Institute of Inorganic and Analytical Chemistry Justus\u2010Liebig\u2010University Giessen  Giessen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,4,3]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1039\/D0CS00229A"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1039\/D3CC06084E"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja00737a033"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1021\/om00092a059"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja00023a080"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1039\/D2SC04368H"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1039\/D3DT03454B"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1021\/om060076p"},{"key":"e_1_2_7_10_1","first-page":"1","volume-title":"Elemental Sustainability and the Importance of Scarce Element Recovery in Element Recovery and Sustainability","author":"Hunt A. 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