{"doi":"10.1002/ange.202013119","title":"Hydrazine Formation via Coupling of a Nickel(III)–NH<sub>2</sub> Radical","abstract":"Abstract M(NH x ) intermediates involved in N−N bond formation are central to ammonia oxidation (AO) catalysis, an enabling technology to ultimately exploit ammonia (NH 3 ) as an alternative fuel source. While homocoupling of a terminal amide species (M‐NH 2 ) to form hydrazine (N 2 H 4 ) has been proposed, well‐defined examples are without precedent. Herein, we discuss the generation and electronic structure of a Ni III ‐NH 2 species that undergoes bimolecular coupling to generate a Ni II 2 (N 2 H 4 ) complex. This hydrazine adduct can be further oxidized to a structurally unusual Ni 2 (N 2 H 2 ) species; this releases N 2 in the presence of NH 3 , thus establishing a synthetic cycle for Ni‐mediated AO. Distribution of the redox load for H 2 N‐NH 2 formation via NH 2 coupling between two metal centers presents an attractive strategy for AO catalysis using Earth‐abundant, late first‐row metals.","journal":"Angewandte Chemie","year":2020,"id":109149,"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":3,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9596,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2020-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":481607,"name":"Paul H. Oyala","orcid":"0000-0002-8761-4667","position":1,"is_corresponding":false},{"id":25233,"name":"Jonas C. Peters","orcid":"0000-0002-6610-4414","position":2,"is_corresponding":false},{"id":481606,"name":"Nina X. Gu","orcid":"0000-0002-4637-8418","position":0,"is_corresponding":true}],"reference_count":44,"raw_metadata":null,"created_at":"2026-07-18T23:12:50.712357Z","pmid":null,"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":[]}