{"doi":"10.1021/jacs.5c04487","title":"Diboron-Incorporated Indenofluorene: Isolation of Crystalline Neutral and Reduced States of 6,12-Diboraindeno[1,2-<i>b</i>]fluorene","abstract":"The synthesis and redox transformations of 6,12-diboraindeno[1,2- b ]fluorene (DBIF)─a pentacyclic π-system with diboron incorporation─are reported. In notable contrast to the all-hydrocarbon indenofluorenes, a ligand coordination and reduction strategy allows tuning of the electronic structure across four redox states. Accordingly, we introduce an 18π e – neutral DBIF, a 20π e – diradical, a 21π e – radical anion, and a 22π e – dianion, all of which have been isolated and structurally authenticated. The diradicals exhibit diradical character of up to 77% and possess open-shell singlet ground states with thermally accessible triplet states.","journal":"Journal of the American Chemical Society","year":2025,"id":511289,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":16,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9592,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2025-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1369170,"name":"Yujie Zhao","orcid":"0000-0003-1683-3528","position":1,"is_corresponding":false},{"id":1369171,"name":"Andrew Molino","orcid":"0000-0002-0954-9054","position":2,"is_corresponding":false},{"id":1068556,"name":"Yifu Ouyang","orcid":"0000-0003-4140-9892","position":3,"is_corresponding":false},{"id":863625,"name":"Chun‐Lin Deng","orcid":"0000-0002-3192-9424","position":4,"is_corresponding":false},{"id":1369916,"name":"Colleen McAloon","orcid":null,"position":5,"is_corresponding":false},{"id":1369172,"name":"Noah D. McMillion","orcid":"0000-0002-6221-9935","position":6,"is_corresponding":false},{"id":1369173,"name":"Heechan Kim","orcid":"0000-0001-6227-5745","position":7,"is_corresponding":false},{"id":1369174,"name":"Chonghe Zhang","orcid":"0009-0004-2855-7406","position":8,"is_corresponding":false},{"id":1096818,"name":"Péter Müller","orcid":"0000-0001-6530-3852","position":9,"is_corresponding":false},{"id":340244,"name":"Robert G. Griffin","orcid":"0000-0003-1589-832X","position":10,"is_corresponding":false},{"id":1369175,"name":"Robert J. Gilliard","orcid":"0000-0002-8830-1064","position":11,"is_corresponding":false},{"id":1369915,"name":"Bi Youan E. Tra","orcid":null,"position":0,"is_corresponding":true}],"reference_count":47,"raw_metadata":null,"created_at":"2026-07-19T02:47:55.918021Z","pmid":"40396789","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}