{"doi":"10.1039/d1cp01520f","title":"Destruction and reconstruction of UO <sub>2</sub> <sup>2+</sup> using gas-phase reactions","abstract":"While the strong axial U[double bond, length as m-dash]O bonds confer high stability and inertness to UO22+, it has been shown that the axial oxo ligands can be eliminated or replaced in the gas-phase using collision-induced dissociation (CID) reactions. We report here tandem mass spectrometry experiments initiated with a gas-phase complex that includes UO22+ coordinated by a 2,6-difluorobenzoate ligand. After decarboxylation to form a difluorophenide coordinated uranyl ion, [UO2(C6F2H3)]+, CID causes elimination of CO, and then CO and C2H2 in sequential dissociation steps, to leave a reactive uranium fluoride ion, [UF2(C2H)]+. Reaction of [UF2(C2H)]+ with CH3OH creates [UF2(OCH3)]+, [UF(OCH3)2]+ and [UF(OCH3)2(CH3OH)]+. Cleavage of C-O bonds within these species results in the elimination of methyl cation (CH3+). Subsequent CID steps convert [UF(OCH3)2]+ to [UO2(F)]+ and similarly, [U(OCH3)3]+ to [UO2(OCH3)]+. Our experiments show removal of both uranyl oxo ligands in \"top-down\" CID reactions and replacement in \"bottom-up\" ion-molecule and dissociation steps.","journal":"Physical Chemistry Chemical Physics","year":2021,"id":200067,"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":8,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9474,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2021-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":513491,"name":"Evan Perez","orcid":"0000-0002-0837-4723","position":1,"is_corresponding":false},{"id":777193,"name":"Luke J. Metzler","orcid":"0000-0003-1154-9042","position":2,"is_corresponding":false},{"id":777194,"name":"Amanda R. Bubas","orcid":"0000-0002-4827-8859","position":3,"is_corresponding":false},{"id":777195,"name":"Theodore A. Corcovilos","orcid":"0000-0001-5716-1188","position":4,"is_corresponding":false},{"id":316084,"name":"Árpád Somogyi","orcid":null,"position":5,"is_corresponding":false},{"id":777192,"name":"Michael J. Van Stipdonk","orcid":"0000-0002-7100-4370","position":0,"is_corresponding":true}],"reference_count":38,"raw_metadata":null,"created_at":"2026-07-18T23:50:44.479665Z","pmid":"33988189","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":[]}