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The same reaction in the presence of a chloride salt affords the corresponding antimonate anion [Cl\n                    <jats:sub>4<\/jats:sub>\n                    Sb(cat\n                    <jats:sup>Cl<\/jats:sup>\n                    )]\n                    <jats:sup>\u2212<\/jats:sup>\n                    . Computational studies indicate that the putative SbCl\n                    <jats:sub>3<\/jats:sub>\n                    (cat\n                    <jats:sup>Cl<\/jats:sup>\n                    ) synthon has a higher chloride ion affinity than SbCl\n                    <jats:sub>5<\/jats:sub>\n                    , suggesting significant Lewis acidity. This property is further demonstrated by the use of the SbCl\n                    <jats:sub>3<\/jats:sub>\n                    \/\n                    <jats:italic>o<\/jats:italic>\n                    \u2010chloranil system for both THF polymerization and a Friedel\u2013Crafts\u2010type alkylation of benzene using 1\u2010fluorooctane. Finally, the reaction of\n                    <jats:italic>E<\/jats:italic>\n                    \u2010stilbene with\n                    <jats:italic>o<\/jats:italic>\n                    \u2010chloranil in the presence of SbCl\n                    <jats:sub>3<\/jats:sub>\n                    affords the corresponding benzodioxene, suggesting that SbCl\n                    <jats:sub>3<\/jats:sub>\n                    may also operate as a redox\u2010active catalyst.\n                  <\/jats:p>","DOI":"10.1002\/anie.202505893","type":"journal-article","created":{"date-parts":[[2025,5,8]],"date-time":"2025-05-08T21:58:54Z","timestamp":1746741534000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Lewis Acidity of the SbCl\n                    <sub>3<\/sub>\n                    \/\n                    <i>o<\/i>\n                    \u2010chloranil System"],"prefix":"10.1002","volume":"64","author":[{"given":"Ferit","family":"\u015eit","sequence":"first","affiliation":[{"name":"Department of Chemistry Texas A&amp;M University  College Station TX 77843 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1348-6842","authenticated-orcid":false,"given":"Nathanael H.","family":"Hunter","sequence":"additional","affiliation":[{"name":"Department of Chemistry Texas A&amp;M University  College Station TX 77843 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Logan T.","family":"Maltz","sequence":"additional","affiliation":[{"name":"Department of Chemistry Texas A&amp;M University  College Station TX 77843 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4788-2998","authenticated-orcid":false,"given":"Fran\u00e7ois P.","family":"Gabba\u00ef","sequence":"additional","affiliation":[{"name":"Department of Chemistry Texas A&amp;M University  College Station TX 77843 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,5,20]]},"reference":[{"key":"e_1_2_6_1_1","doi-asserted-by":"publisher","DOI":"10.1039\/j19660001170"},{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja01012a066"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja01039a019"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja01040a029"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja00892a025"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja01061a019"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja00754a037"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja00448a018"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201809159"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.1c08170"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1039\/C9DT03564H"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja505214m"},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jorganchem.2019.06.033"},{"key":"e_1_2_6_14_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202207963"},{"key":"e_1_2_6_15_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.200800783"},{"key":"e_1_2_6_16_1","doi-asserted-by":"publisher","DOI":"10.1002\/chem.201802698"},{"key":"e_1_2_6_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0040-4039(00)83945-3"},{"key":"e_1_2_6_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0040-4039(01)80297-5"},{"key":"e_1_2_6_19_1","doi-asserted-by":"publisher","DOI":"10.1039\/C6GC03629E"},{"key":"e_1_2_6_20_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.organomet.7b00654"},{"key":"e_1_2_6_21_1","doi-asserted-by":"publisher","DOI":"10.1039\/C8DT00702K"},{"key":"e_1_2_6_22_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201808551"},{"key":"e_1_2_6_23_1","doi-asserted-by":"publisher","DOI":"10.1002\/chem.202003426"},{"key":"e_1_2_6_24_1","doi-asserted-by":"publisher","DOI":"10.1039\/D0SC02551H"},{"key":"e_1_2_6_25_1","doi-asserted-by":"publisher","DOI":"10.1002\/hlca.202200119"},{"key":"e_1_2_6_26_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.organomet.2c00426"},{"key":"e_1_2_6_27_1","doi-asserted-by":"publisher","DOI":"10.1002\/hlca.202400015"},{"key":"e_1_2_6_28_1","doi-asserted-by":"publisher","DOI":"10.31635\/ccschem.024.202404847"},{"key":"e_1_2_6_29_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201704991"},{"key":"e_1_2_6_30_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.organomet.4c00399"},{"key":"e_1_2_6_31_1","doi-asserted-by":"publisher","DOI":"10.1515\/pac-2020-1002"},{"key":"e_1_2_6_32_1","author":"Renno G.","year":"2024","journal-title":"Angew. 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