{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T20:19:14Z","timestamp":1760300354060,"version":"3.37.3"},"reference-count":49,"publisher":"Wiley","issue":"18","license":[{"start":{"date-parts":[[2020,3,13]],"date-time":"2020-03-13T00:00:00Z","timestamp":1584057600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001659","name":"Deutsche Forschungsgemeinschaft","doi-asserted-by":"publisher","award":["Sche 384\/36-1 and Sche 384\/33-2"],"award-info":[{"award-number":["Sche 384\/36-1 and Sche 384\/33-2"]}],"id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Angew Chem Int Ed"],"published-print":{"date-parts":[[2020,4,27]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The redox chemistry of [(Cp\u2032\u2032\u2032Co)<jats:sub>2<\/jats:sub>(\u03bc,\u03b7<jats:sup>2<\/jats:sup>:\u03b7<jats:sup>2<\/jats:sup>\u2010E<jats:sub>2<\/jats:sub>)<jats:sub>2<\/jats:sub>] (E=P (<jats:bold>1<\/jats:bold>), As (<jats:bold>2<\/jats:bold>); Cp\u2032\u2032\u2032=1,2,4\u2010tri(<jats:italic>tert<\/jats:italic>\u2010butyl)cyclopentadienyl) was investigated. Both compounds can be oxidized and reduced twice. That way, the monocations [(Cp\u2032\u2032\u2032Co)<jats:sub>2<\/jats:sub>(\u03bc,\u03b7<jats:sup>4<\/jats:sup>:\u03b7<jats:sup>4<\/jats:sup>\u2010E<jats:sub>4<\/jats:sub>)][X] (E=P, X=BF<jats:sub>4<\/jats:sub> (<jats:bold>3\u2009a<\/jats:bold>), [FAl] (<jats:bold>3\u2009b<\/jats:bold>); E=As, X=BF<jats:sub>4<\/jats:sub> (<jats:bold>4\u2009a<\/jats:bold>), [FAl] (<jats:bold>4\u2009b<\/jats:bold>)), the dications [(Cp\u2032\u2032\u2032Co)<jats:sub>2<\/jats:sub>(\u03bc,\u03b7<jats:sup>4<\/jats:sup>:\u03b7<jats:sup>4<\/jats:sup>\u2010E<jats:sub>4<\/jats:sub>)][TEF]<jats:sub>2<\/jats:sub> (E=P (<jats:bold>5<\/jats:bold>), As (<jats:bold>6<\/jats:bold>)), and the monoanions [K(18\u2010c\u20106)(dme)<jats:sub>2<\/jats:sub>][(Cp\u2032\u2032\u2032Co)<jats:sub>2<\/jats:sub>(\u03bc,\u03b7<jats:sup>4<\/jats:sup>:\u03b7<jats:sup>4<\/jats:sup>\u2010E<jats:sub>4<\/jats:sub>)] (E=P (<jats:bold>7<\/jats:bold>), As (<jats:bold>8<\/jats:bold>)) were isolated. Further reduction of <jats:bold>7<\/jats:bold> leads to the dianionic complex [K(18\u2010c\u20106)(dme)<jats:sub>2<\/jats:sub>][K(18\u2010c\u20106)][(Cp\u2032\u2032\u2032Co)<jats:sub>2<\/jats:sub>(\u03bc,\u03b7<jats:sup>3<\/jats:sup>:\u03b7<jats:sup>3<\/jats:sup>\u2010P<jats:sub>4<\/jats:sub>)] (<jats:bold>9<\/jats:bold>), in which the cyclo\u2010P<jats:sub>4<\/jats:sub> ligand has rearranged to a chain\u2010like P<jats:sub>4<\/jats:sub> ligand. Further reduction of <jats:bold>8<\/jats:bold> can be achieved with an excess of potassium under the formation of [K(dme)<jats:sub>4<\/jats:sub>][(Cp\u2032\u2032\u2032Co)<jats:sub>2<\/jats:sub>(\u03bc,\u03b7<jats:sup>3<\/jats:sup>:\u03b7<jats:sup>3<\/jats:sup>\u2010As<jats:sub>3<\/jats:sub>)] (<jats:bold>10<\/jats:bold>) and the elimination of an As<jats:sub>1<\/jats:sub> unit. Compound <jats:bold>10<\/jats:bold> represents the first example of an allylic As<jats:sub>3<\/jats:sub> ligand incorporated into a triple\u2010decker complex.<\/jats:p>","DOI":"10.1002\/anie.201916622","type":"journal-article","created":{"date-parts":[[2020,2,4]],"date-time":"2020-02-04T04:38:26Z","timestamp":1580791106000},"page":"7154-7160","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":20,"title":["Element\u2013Element Bond Formation upon Oxidation and Reduction"],"prefix":"10.1002","volume":"59","author":[{"given":"Martin","family":"Piesch","sequence":"first","affiliation":[{"name":"Institut f\u00fcr Anorganische Chemie Universit\u00e4t Regensburg  93040 Regensburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christian","family":"Gra\u00dfl","sequence":"additional","affiliation":[{"name":"Institut f\u00fcr Anorganische Chemie Universit\u00e4t 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":"Institut f\u00fcr Anorganische Chemie Universit\u00e4t Regensburg  93040 Regensburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2020,3,13]]},"reference":[{"key":"e_1_2_6_1_1","unstructured":"\u00a0"},{"key":"e_1_2_6_2_2","doi-asserted-by":"publisher","DOI":"10.1002\/zaac.19613090308"},{"key":"e_1_2_6_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-0728(75)80305-6"},{"key":"e_1_2_6_4_2","doi-asserted-by":"publisher","DOI":"10.1515\/zpch-1937-3725"},{"key":"e_1_2_6_5_1","unstructured":"\u00a0"},{"key":"e_1_2_6_6_2","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201201262"},{"key":"e_1_2_6_6_3","doi-asserted-by":"publisher","DOI":"10.1002\/ange.201201262"},{"key":"e_1_2_6_7_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic50101a001"},{"key":"e_1_2_6_8_1","unstructured":"\u00a0"},{"key":"e_1_2_6_9_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja00899a027"},{"key":"e_1_2_6_10_2","doi-asserted-by":"publisher","DOI":"10.1039\/c0nj00181c"},{"key":"e_1_2_6_11_2","doi-asserted-by":"publisher","DOI":"10.1002\/prac.19713130210"},{"key":"e_1_2_6_12_2","doi-asserted-by":"publisher","DOI":"10.1002\/zaac.19784460116"},{"key":"e_1_2_6_13_1","unstructured":"\u00a0"},{"key":"e_1_2_6_14_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja010331r"},{"key":"e_1_2_6_15_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja001739b"},{"key":"e_1_2_6_16_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja4006578"},{"key":"e_1_2_6_17_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.279.5359.2080"},{"key":"e_1_2_6_18_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja00030a079"},{"key":"e_1_2_6_19_1","first-page":"59","volume":"26","author":"Scherer O. 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