{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,4,11]],"date-time":"2025-04-11T11:09:43Z","timestamp":1744369783835,"version":"3.33.0"},"reference-count":46,"publisher":"International Union of Crystallography (IUCr)","issue":"11","license":[{"start":{"date-parts":[[2022,10,13]],"date-time":"2022-10-13T00:00:00Z","timestamp":1665619200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/legalcode"},{"start":{"date-parts":[[2022,10,13]],"date-time":"2022-10-13T00:00:00Z","timestamp":1665619200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/legalcode"}],"content-domain":{"domain":["iucr.org","wiley.com","iucrj.org"],"crossmark-restriction":true},"short-container-title":["Acta Crystallogr C Struct Chem","Acta Crystallogr C","Acta Crystallogr C Cryst Struct Commun","Acta Cryst C","Acta Cryst C Struct Chem","Acta Cryst Sect C","Acta Cryst Sect C Struct Chem","Acta Crystallogr Sect C","Acta Crystallogr Sect C Struct Chem","Acta Crystallogr Sect C Cryst Struct Commun"],"accepted":{"date-parts":[[2022,9,28]]},"published-print":{"date-parts":[[2022,11,1]]},"abstract":"<jats:p>The reaction of [(C<jats:sub>5<\/jats:sub>H<jats:sub>3<\/jats:sub>Br<jats:sub>2<\/jats:sub>)<jats:sub>2<\/jats:sub>Fe] with lithium tetramethylpiperidinide (LiTMP) in a 1:10 molar ratio in tetrahydrofuran yields, after quenching with C<jats:sub>2<\/jats:sub>H<jats:sub>2<\/jats:sub>Br<jats:sub>4<\/jats:sub>, a mixture of the polybromoferrocenes [C<jats:sub>10<\/jats:sub>H<jats:sub>10\u2013<jats:italic>n<\/jats:italic>\n                  <\/jats:sub>Br<jats:sub>\n                     <jats:italic>n<\/jats:italic>\n                  <\/jats:sub>Fe] with <jats:italic>n<\/jats:italic>\u00a0= 4\u20139, from which single crystals of bis(1,2,3-tribromocyclopentadienyl)iron(II), [Fe(C<jats:sub>5<\/jats:sub>H<jats:sub>2<\/jats:sub>Br<jats:sub>3<\/jats:sub>)<jats:sub>2<\/jats:sub>], and bis(1,2,3,4-tetrabromocyclopentadienyl)iron(II), [Fe(C<jats:sub>5<\/jats:sub>HBr<jats:sub>4<\/jats:sub>)<jats:sub>2<\/jats:sub>Fe], were obtained by a combination of chromatography and fractional crystallization. Treatment of `[C<jats:sub>10<\/jats:sub>(HgOAc)<jats:sub>10<\/jats:sub>Fe]' with KBr<jats:sub>3<\/jats:sub> yields a mixture of polybromoferrocenes [C<jats:sub>10<\/jats:sub>H<jats:sub>10\u2013<jats:italic>n<\/jats:italic>\n                  <\/jats:sub>Br<jats:sub>\n                     <jats:italic>n<\/jats:italic>\n                  <\/jats:sub>Fe] with <jats:italic>n<\/jats:italic>\u00a0= 8\u201310 and bromomercurioferrocenes [C<jats:sub>10<\/jats:sub>H<jats:sub>9\u2013<jats:italic>n<\/jats:italic>\n                  <\/jats:sub>Br<jats:sub>\n                     <jats:italic>n<\/jats:italic>\n                  <\/jats:sub>(HgBr)Fe] with <jats:italic>n<\/jats:italic>\u00a0= 7\u20139, from which single crystals of (1-bromomercurio-2,3,4,5-tetrabromocyclopentadienyl)(1,2,3,4,5-pentabromocyclopentadienyl)iron(II), [FeHgBr(C<jats:sub>5<\/jats:sub>Br<jats:sub>4<\/jats:sub>)(C<jats:sub>5<\/jats:sub>Br<jats:sub>5<\/jats:sub>)], were obtained by fractional crystallization. The crystal structures of all the compounds show Br...Br, Br...H and sometimes Br...Cp...\u03c0 (Cp is a ring centroid) interactions, as well as \u03c0\u2013\u03c0 interactions. The findings are supported by Hirshfeld analyses.<\/jats:p>","DOI":"10.1107\/s205322962200955x","type":"journal-article","created":{"date-parts":[[2022,10,13]],"date-time":"2022-10-13T15:24:10Z","timestamp":1665674650000},"page":"578-590","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":3,"title":["Isolation and crystal and molecular structures of [(C<sub>5<\/sub>H<sub>2<\/sub>Br<sub>3<\/sub>)<sub>2<\/sub>Fe], [(C<sub>5<\/sub>HBr<sub>4<\/sub>)<sub>2<\/sub>Fe] and [(C<sub>5<\/sub>Br<sub>5<\/sub>)(C<sub>5<\/sub>Br<sub>4<\/sub>HgBr)Fe]"],"prefix":"10.1107","volume":"78","author":[{"given":"Tobias","family":"Blockhaus","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5631-8120","authenticated-orcid":true,"given":"Karlheinz","family":"S\u00fcnkel","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"329","published-online":{"date-parts":[[2022,10,13]]},"reference":[{"key":"qw3001_bb1","unstructured":"Agilent (2014). 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