{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T19:36:40Z","timestamp":1790797000778,"version":"4.1.0"},"reference-count":27,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2022,3,21]],"date-time":"2022-03-21T00:00:00Z","timestamp":1647820800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>The current discussion on whether scandium, yttrium and lanthanum should represent Group 3 in the Periodic Table or whether lutetium should replace lanthanum in the group has prompted us to further explore the structural chemistry of the Group 3 elements and compare the coordination numbers and coordination geometries adopted. The steric and electronic properties of the coordinated ligands have a major influence on the structures adopted. We report the synthesis and crystal structure determination of an unusual dinuclear scandium complex [(bipy)(NO3)2Sc(\u00b5-OH)2Sc(NO3)2(bipy)] obtained by the reaction of hydrated scandium nitrate with 2,2\u2032-bipyridyl (bipy) in either ethanol or nitromethane. The crystal structure of the complex shows that the scandium centers are eight coordinate, and the structure obtained contrasts with related complexes found in the lanthanide series [Ln(bipy)2(NO3)3] and [Ln(phen)2(NO3)3] (phen = phenanthroline) and in [M(terpy)(NO3)3] (M = Sc, Er\u2013Lu), where these complexes are all mononuclear.<\/jats:p>","DOI":"10.3390\/molecules27062024","type":"journal-article","created":{"date-parts":[[2022,3,21]],"date-time":"2022-03-21T21:48:42Z","timestamp":1647899322000},"page":"2024","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["The Synthesis and Structure of a Scandium Nitrate Hydroxy-Bridged Dimeric Complex Supported by Bipyridyl Ligands"],"prefix":"10.3390","volume":"27","author":[{"given":"Simon A.","family":"Cotton","sequence":"first","affiliation":[{"name":"School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2944-0662","authenticated-orcid":false,"given":"Paul R.","family":"Raithby","sequence":"additional","affiliation":[{"name":"Department of Chemistry, University of Bath, Bath BA2 7AY, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stephanie","family":"Schiffers","sequence":"additional","affiliation":[{"name":"Department of Chemistry, University of Bath, Bath BA2 7AY, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Simon J.","family":"Teat","sequence":"additional","affiliation":[{"name":"Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John E.","family":"Warren","sequence":"additional","affiliation":[{"name":"Department of Mechanical, Aerospace & Civil Engineering, University of Manchester, Manchester M1 3BB, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,3,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"6","DOI":"10.1007\/s40828-021-00157-8","article-title":"Various forms of the periodic table including the left-step table, the regularization of atomic number triads and first-member anomalies","volume":"8","author":"Scerri","year":"2021","journal-title":"ChemTexts"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/B978-0-444-53590-0.00001-7","article-title":"Accommodation of the Rare Earths in the Periodic Table","volume":"Volume 41","author":"Gschneidner","year":"2011","journal-title":"Handbook on the Physics and Chemistry of Rare Earths"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"31","DOI":"10.1515\/ci-2021-0115","article-title":"Provisional Report on Discussions on Group 3 of The Periodic Table","volume":"43","author":"Scerri","year":"2021","journal-title":"Chem. 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