{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T13:23:45Z","timestamp":1785158625921,"version":"3.55.0"},"reference-count":25,"publisher":"International Union of Crystallography (IUCr)","issue":"2","license":[{"start":{"date-parts":[[2021,1,26]],"date-time":"2021-01-26T00:00:00Z","timestamp":1611619200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/legalcode"},{"start":{"date-parts":[[2021,1,26]],"date-time":"2021-01-26T00:00:00Z","timestamp":1611619200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/legalcode"}],"funder":[{"name":"National Science Foundation","award":["DMR-1904701"],"award-info":[{"award-number":["DMR-1904701"]}]},{"name":"Office of Undergraduate Research at Northwestern University","award":["1041SUMMER1917662"],"award-info":[{"award-number":["1041SUMMER1917662"]}]}],"content-domain":{"domain":["iucr.org","wiley.com","iucrj.org"],"crossmark-restriction":true},"short-container-title":["Acta Crystallogr E Cryst Commun","Acta Cryst E","Acta Cryst Sect E","Acta Crystallogr E","Acta Crystallogr Sect E","Acta Cryst E Cryst Commun","Acta Cryst Sect E Cryst Commun"],"accepted":{"date-parts":[[2021,1,19]]},"published-print":{"date-parts":[[2021,2,1]]},"abstract":"<jats:p>We report the hydrothermal syntheses and crystal structures of aquabis(2,2\u2032-bipyridine-\u03ba<jats:sup>2<\/jats:sup>\n                  <jats:italic>N<\/jats:italic>,<jats:italic>N<\/jats:italic>\u2032)copper(II) hexafluoridosilicate tetrahydrate, [Cu(bpy)<jats:sub>2<\/jats:sub>(H<jats:sub>2<\/jats:sub>O)][SiF<jats:sub>6<\/jats:sub>]\u00b74H<jats:sub>2<\/jats:sub>O (bpy is 2,2\u2032-bipyridine, C<jats:sub>10<\/jats:sub>H<jats:sub>8<\/jats:sub>N<jats:sub>2<\/jats:sub>), (I), bis(2,2\u2032-bipyridine-3\u03ba<jats:sup>2<\/jats:sup>\n                  <jats:italic>N<\/jats:italic>,<jats:italic>N<\/jats:italic>\u2032)-di-\u03bc-fluorido-1:3\u03ba<jats:sup>2<\/jats:sup>\n                  <jats:italic>F<\/jats:italic>:<jats:italic>F<\/jats:italic>;2:3\u03ba<jats:sup>2<\/jats:sup>\n                  <jats:italic>F<\/jats:italic>:<jats:italic>F<\/jats:italic>-decafluorido-1\u03ba<jats:sup>5<\/jats:sup>\n                  <jats:italic>F<\/jats:italic>,2\u03ba<jats:sup>5<\/jats:sup>\n                  <jats:italic>F<\/jats:italic>-ditantalum(V)copper(II), [Cu(bpy)<jats:sub>2<\/jats:sub>(TaF<jats:sub>6<\/jats:sub>)<jats:sub>2<\/jats:sub>], (II), tris(2,2\u2032-bipyridine-\u03ba<jats:sup>2<\/jats:sup>\n                  <jats:italic>N<\/jats:italic>,<jats:italic>N<\/jats:italic>\u2032)copper(II) bis[hexafluoridotantalate(V)], [Cu(bpy)<jats:sub>3<\/jats:sub>][TaF<jats:sub>6<\/jats:sub>]<jats:sub>2<\/jats:sub>, (III), and <jats:italic>catena<\/jats:italic>-poly[[diaqua(2,2\u2032-bipyridine-\u03ba<jats:sup>2<\/jats:sup>\n                  <jats:italic>N<\/jats:italic>,<jats:italic>N<\/jats:italic>\u2032)copper(II)]-\u03bc-fluorido-tetrafluoridotin-\u03bc-fluorido], [Cu(bpy)(H<jats:sub>2<\/jats:sub>O)<jats:sub>2<\/jats:sub>SnF<jats:sub>6<\/jats:sub>]<jats:sub>\n                     <jats:italic>n<\/jats:italic>\n                  <\/jats:sub>, (IV). Compounds (I), (II) and (III) contain locally chiral copper coordination complexes with <jats:italic>C<\/jats:italic>\n                  <jats:sub>2<\/jats:sub>, <jats:italic>D<\/jats:italic>\n                  <jats:sub>2<\/jats:sub>, and <jats:italic>D<\/jats:italic>\n                  <jats:sub>3<\/jats:sub> symmetry, respectively. The extended structures of (I) and (IV) are consolidated by O\u2014H...F and O\u2014H...O hydrogen bonds. The structure of (III) was found to be a merohedral (racemic) twin.<\/jats:p>","DOI":"10.1107\/s2056989021000633","type":"journal-article","created":{"date-parts":[[2021,1,26]],"date-time":"2021-01-26T10:26:23Z","timestamp":1611656783000},"page":"158-164","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":6,"title":["Crystal structures of three copper(II)\u20132,2\u2032-bipyridine (bpy) compounds, [Cu(bpy)<sub>2<\/sub>(H<sub>2<\/sub>O)][SiF<sub>6<\/sub>]\u00b74H<sub>2<\/sub>O, [Cu(bpy)<sub>2<\/sub>(TaF<sub>6<\/sub>)<sub>2<\/sub>] and [Cu(bpy)<sub>3<\/sub>][TaF<sub>6<\/sub>]<sub>2<\/sub> and a related coordination polymer, [Cu(bpy)(H<sub>2<\/sub>O)<sub>2<\/sub>SnF<sub>6<\/sub>]<sub>\n                     <i>n<\/i>\n                  <\/sub>"],"prefix":"10.1107","volume":"77","author":[{"given":"Matthew L.","family":"Nisbet","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emily","family":"Hiralal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kenneth R.","family":"Poeppelmeier","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"329","published-online":{"date-parts":[[2021,1,26]]},"reference":[{"key":"hb7957_bb1","doi-asserted-by":"crossref","first-page":"859","DOI":"10.1002\/ejic.201601148","author":"Adamski","year":"2017","journal-title":"Eur. 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