Koszinowski, Konrad

[["dc.bibliographiccitation.firstpage","3213"],["dc.bibliographiccitation.issue","13"],["dc.bibliographiccitation.journal","Chemistry - A European Journal"],["dc.bibliographiccitation.lastpage","3219"],["dc.bibliographiccitation.volume","23"],["dc.contributor.author","Parchomyk, Tobias"],["dc.contributor.author","Koszinowski, Konrad"],["dc.date.accessioned","2018-11-07T10:26:29Z"],["dc.date.available","2018-11-07T10:26:29Z"],["dc.date.issued","2017"],["dc.description.abstract","The cluster ion Me12Fe8- is an unprecedented representative of organoiron species, which are of great interest because of their possible role as intermediates in iron-catalyzed cross-coupling reactions. To learn more about its behavior in solution, the possible formation of related cluster ions, and their reactivity, electrospray-ionization mass spectrometry and gas-phase experiments were performed. Me12Fe8- adopts a highly dynamic behavior in solution and disappears in the presence of the chelating ligand N, N, N', N'-tetramethylethylenediamine. Besides homoleptic Me12Fe8-, its heteroleptic analogues Me12-nFe8Phn-, n=1-5, are also accessible. Me12Fe8- undergoes iron-halogen exchange reactions with aryl halides. These substrates, as well as their alkyl counterparts, mediate the formation of new homoleptic cluster ions up to Me18Fe12-. In contrast, no evidence was found for oxidative additions or related reactions. Gas-phase fragmentation of the cluster ions results in numerous different reactions, ranging from the loss of single methyl radicals to the reductive elimination of MePh."],["dc.identifier.doi","10.1002/chem.201605602"],["dc.identifier.isi","000395774700031"],["dc.identifier.pmid","28071817"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/43055"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Wiley-v C H Verlag Gmbh"],["dc.relation.issn","1521-3765"],["dc.relation.issn","0947-6539"],["dc.title","Solution and Gas-Phase Reactivity of Me12Fe8- and Related Cluster Ions"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","81"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Journal of Mass Spectrometry"],["dc.bibliographiccitation.lastpage","87"],["dc.bibliographiccitation.volume","54"],["dc.contributor.author","Parchomyk, Tobias"],["dc.contributor.author","Koszinowski, Konrad"],["dc.date.accessioned","2020-12-10T14:06:48Z"],["dc.date.available","2020-12-10T14:06:48Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1002/jms.4313"],["dc.identifier.issn","1076-5174"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70027"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Substitution reactions of gaseous ions in a three-dimensional quadrupole ion trap"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3269"],["dc.bibliographiccitation.issue","15"],["dc.bibliographiccitation.journal","Synthesis"],["dc.bibliographiccitation.lastpage","3280"],["dc.bibliographiccitation.volume","49"],["dc.contributor.author","Parchomyk, Tobias"],["dc.contributor.author","Koszinowski, Konrad"],["dc.date.accessioned","2020-12-10T18:12:15Z"],["dc.date.available","2020-12-10T18:12:15Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1055/s-0036-1588428"],["dc.identifier.eissn","1437-210X"],["dc.identifier.issn","0039-7881"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74301"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Iron-Catalyzed Cross-Coupling: Mechanistic Insight for Rational Applications in Synthesis"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","chem.202202030"],["dc.bibliographiccitation.journal","Chemistry – A European Journal"],["dc.contributor.author","Lülf, Stefan"],["dc.contributor.author","Guo, Luxuan"],["dc.contributor.author","Parchomyk, Tobias"],["dc.contributor.author","Harvey, Jeremy N."],["dc.contributor.author","Koszinowski, Konrad"],["dc.date.accessioned","2022-09-01T09:49:33Z"],["dc.date.available","2022-09-01T09:49:33Z"],["dc.date.issued","2022"],["dc.identifier.doi","10.1002/chem.202202030"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/113459"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-597"],["dc.relation.eissn","1521-3765"],["dc.relation.issn","0947-6539"],["dc.rights.uri","http://onlinelibrary.wiley.com/termsAndConditions#vor"],["dc.title","Microscopic Reactivity of Phenylferrate Ions toward Organyl Halides"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","9709"],["dc.bibliographiccitation.issue","30"],["dc.bibliographiccitation.journal","Journal of the American Chemical Society"],["dc.bibliographiccitation.lastpage","9720"],["dc.bibliographiccitation.volume","140"],["dc.contributor.author","Parchomyk, Tobias"],["dc.contributor.author","Demeshko, Serhiy"],["dc.contributor.author","Meyer, Franc"],["dc.contributor.author","Koszinowski, Konrad"],["dc.date.accessioned","2020-12-10T18:09:18Z"],["dc.date.available","2020-12-10T18:09:18Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1021/jacs.8b06001"],["dc.identifier.eissn","1520-5126"],["dc.identifier.issn","0002-7863"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/73603"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Oxidation States, Stability, and Reactivity of Organoferrate Complexes"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","5135"],["dc.bibliographiccitation.issue","16"],["dc.bibliographiccitation.journal","Dalton Transactions"],["dc.bibliographiccitation.lastpage","5139"],["dc.bibliographiccitation.volume","48"],["dc.contributor.author","Loup, Joachim"],["dc.contributor.author","Parchomyk, Tobias"],["dc.contributor.author","Lülf, Stefan"],["dc.contributor.author","Demeshko, Serhiy"],["dc.contributor.author","Meyer, Franc"],["dc.contributor.author","Koszinowski, Konrad"],["dc.contributor.author","Ackermann, Lutz"],["dc.date.accessioned","2021-06-01T10:50:51Z"],["dc.date.available","2021-06-01T10:50:51Z"],["dc.date.issued","2019"],["dc.description.abstract","A combination of electrospray-ionization mass spectrometry and Mössbauer spectroscopy was used to investigate the species generated in situ in highly enantioselective Fe/NHC-catalyzed C–H alkylations. The findings indicate an organometallic iron( ii )–NHC species to be of key relevance in the asymmetric catalysis."],["dc.identifier.doi","10.1039/C9DT00705A"],["dc.identifier.eissn","1477-9234"],["dc.identifier.issn","1477-9226"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/86809"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-425"],["dc.relation.eissn","1477-9234"],["dc.relation.issn","1477-9226"],["dc.title","Mössbauer and mass spectrometry support for iron( ii ) catalysts in enantioselective C–H activation"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","15609"],["dc.bibliographiccitation.issue","44"],["dc.bibliographiccitation.journal","Chemistry - A European Journal"],["dc.bibliographiccitation.lastpage","15613"],["dc.bibliographiccitation.volume","22"],["dc.contributor.author","Parchomyk, Tobias"],["dc.contributor.author","Koszinowski, Konrad"],["dc.date.accessioned","2018-11-07T10:06:53Z"],["dc.date.available","2018-11-07T10:06:53Z"],["dc.date.issued","2016"],["dc.description.abstract","Iron-catalyzed cross-coupling reactions have an outstanding potential for sustainable organic synthesis, but remain poorly understood mechanistically. Here, we use electrospray-ionization (ESI) mass spectrometry to identify the ionic species formed in these reactions and characterize their reactivity. Transmetalation of Fe(acac)(3) (acac=acetylacetonato) with PhMgCl in THF (tetrahydrofuran) produces anionic iron ate complexes, whose nuclearity (1 to 4Fe centers) and oxidation states (ranging from -I to +III) crucially depend on the presence of additives or ligands. Upon addition of iPrCl, formation of the heteroleptic Fe-III complex [Ph3Fe(iPr)](-) is observed. Gas-phase fragmentation of this complex results in reductive elimination and release of the cross-coupling product with high selectivity."],["dc.identifier.doi","10.1002/chem.201603574"],["dc.identifier.isi","000386795700006"],["dc.identifier.pmid","27556569"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/39181"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-v C H Verlag Gmbh"],["dc.relation.issn","1521-3765"],["dc.relation.issn","0947-6539"],["dc.title","Ate Complexes in Iron-Catalyzed Cross-Coupling Reactions"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","16342"],["dc.bibliographiccitation.issue","61"],["dc.bibliographiccitation.journal","Chemistry - A European Journal"],["dc.bibliographiccitation.lastpage","16347"],["dc.bibliographiccitation.volume","24"],["dc.contributor.author","Parchomyk, Tobias"],["dc.contributor.author","Koszinowski, Konrad"],["dc.date.accessioned","2020-12-10T14:05:50Z"],["dc.date.available","2020-12-10T14:05:50Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1002/chem.201801003"],["dc.identifier.issn","0947-6539"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/69671"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Electronic and Steric Effects on the Reductive Elimination of Anionic Arylferrate(III) Complexes"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]