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Stable Salts of Heteroleptic Iron Carbonyl/Nitrosyl Cations
Author(s) -
Bohnenberger Jan,
Krossing Ingo
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201915942
Subject(s) - chemistry , raman spectroscopy , salt (chemistry) , valence (chemistry) , triad (sociology) , inorganic chemistry , ion , crystallography , polymer chemistry , organic chemistry , psychology , physics , psychoanalysis , optics
The oxidation of Fe(CO) 5 with the [NO] + salt of the weakly coordinating perfluoroalkoxyaluminate anion [F‐{Al(OR F ) 3 } 2 ] − (R F =C(CF 3 ) 3 ) leads to stable salts of the 18 valence electron (VE) species [Fe(CO) 4 (NO)] + and [Fe(CO)(NO) 3 ] + with the Enemark–Feltham numbers of {FeNO} 8 and {FeNO} 10 . This finally concludes the triad of heteroleptic iron carbonyl/nitrosyl complexes, since the first discovery of the anionic ([Fe(CO) 3 (NO)] − ) and neutral ([Fe(CO) 2 (NO) 2 ]) species over 80 years ago. Both complexes were fully characterized (IR, Raman, NMR, UV/Vis, scXRD, pXRD) and are stable at room temperature under inert conditions over months and may serve as useful starting materials for further investigations.