{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,29]],"date-time":"2026-03-29T01:15:59Z","timestamp":1774746959963,"version":"3.50.1"},"reference-count":34,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2022,12,22]],"date-time":"2022-12-22T00:00:00Z","timestamp":1671667200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001711","name":"Swiss National Science Foundation","doi-asserted-by":"publisher","award":["200020_182000"],"award-info":[{"award-number":["200020_182000"]}],"id":[{"id":"10.13039\/501100001711","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>The synthesis and characterization of two tritopic ligands containing a 2,2\u2032:6\u2032,2\u2033-terpyridine (tpy) metal binding domain and either a 3,2\u2032:6\u2032,3\u2033- or a 4,2\u2032:6\u2032,4\u2033-tpy domain are detailed. The synthetic routes to these ligands involved the [Pd(dppf)Cl2]-catalyzed coupling of a boronic ester-functionalized 2,2\u2032:6\u2032,2\u2033-tpy with bromo-derivatives of 3,2\u2032:6\u2032,3\u2033-tpy or 4,2\u2032:6\u2032,4\u2033-tpy. The 2,2\u2032:6\u2032,2\u2033-tpy domains of the tritopic ligands preferentially bind Fe2+ in reactions with iron(II) salts leading to the formation of two homoleptic iron(II) complexes containing two peripheral 3,2\u2032:6\u2032,3\u2033-tpy or 4,2\u2032:6\u2032,4\u2033-tpy metal-binding sites, respectively. These iron(II) complexes are potentially tetratopic ligands and represent expanded versions of tetra(pyridin-4-yl)pyrazine.<\/jats:p>","DOI":"10.3390\/molecules28010082","type":"journal-article","created":{"date-parts":[[2022,12,23]],"date-time":"2022-12-23T03:26:25Z","timestamp":1671765985000},"page":"82","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Expanded Ligands Based upon Iron(II) Coordination Compounds of Asymmetrical Bis(terpyridine) Domains"],"prefix":"10.3390","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1588-4841","authenticated-orcid":false,"given":"Dalila","family":"Rocco","sequence":"first","affiliation":[{"name":"Department of Chemistry, University of Basel, BPR 1096, Mattenstrasse 24a, 4058 Basel, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3631-5210","authenticated-orcid":false,"given":"Alessandro","family":"Prescimone","sequence":"additional","affiliation":[{"name":"Department of Chemistry, University of Basel, BPR 1096, Mattenstrasse 24a, 4058 Basel, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8074-0089","authenticated-orcid":false,"given":"Catherine E.","family":"Housecroft","sequence":"additional","affiliation":[{"name":"Department of Chemistry, University of Basel, BPR 1096, Mattenstrasse 24a, 4058 Basel, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4916-4041","authenticated-orcid":false,"given":"Edwin C.","family":"Constable","sequence":"additional","affiliation":[{"name":"Department of Chemistry, University of Basel, BPR 1096, Mattenstrasse 24a, 4058 Basel, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,12,22]]},"reference":[{"key":"ref_1","unstructured":"Connelly, N.G., Damhus, T., Hartshorn, R.M., and Hutton, A.T. 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