A5085530505- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Organometallic Complex Synthesis and Catalysis
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Synthesis and characterization of novel inorganic/organometallic compounds
- Magnetism in coordination complexes
- Metal complexes synthesis and properties
- Metal-Catalyzed Oxygenation Mechanisms
- Asymmetric Hydrogenation and Catalysis
- Asymmetric Synthesis and Catalysis
- Coordination Chemistry and Organometallics
- Inorganic Chemistry and Materials
- Organic and Molecular Conductors Research
- Catalytic Cross-Coupling Reactions
- Metalloenzymes and iron-sulfur proteins
- Quinazolinone synthesis and applications
- Radical Photochemical Reactions
- Crystallography and molecular interactions
- Organic Light-Emitting Diodes Research
Friedrich-Alexander-Universität Erlangen-Nürnberg
2020-2024
Abstract Typified by LiTMP and TMPMgCl.LiCl, (TMP=2,2,6,6‐tetramethylpiperidide), s‐block metal amides have found widespread applications in arene deprotonative metalation. On the contrary, transition lack sufficient basicity to activate these substrates. Breaking new ground this field, here we present synthesis full characterisation of earth‐abundant metals M(TMP) 2 (M=Fe, Co). Uncovering a reactivity profile towards fluoroarenes, amide complexes can promote direct M−H exchange processes...
Ferrous bridging mono-chalcogenide ate complexes K 2 [( t Bu pyrpyrr )Fe (μ-E)] (2-E) (E = O, S, Se, and Te) are prepared show a Fe–E–Fe bridge from linear O) to acute for E Te, with lesser antiferromagnetic coupling going down the series.
Abstract Reaction of the 6π‐electron aromatic four‐membered heterocycle (IPr) 2 C P ( 1 ) (IPr=1,3‐bis(2,6‐diisopropylphenyl)‐1,3‐dihydro‐2 H ‐imidazol‐2‐ylidene) with [Fe CO 9 ] gives neutral iron tricarbonyl complex [Fe(CO) 3 ‐η ‐{(IPr) }] ). Oxidation two equivalents ferrocenium salt, [Fe(Cp) ](BArF 24 ), affords dicationic 4 }](BArF The one‐electron oxidation proceeds under concomitant loss one ligand to give paramagnetic dicarbonyl radical cation 5 Reduction allows preparation 6 An...
The synthesis and characterization of a series homoleptic iron complexes [Fe(benzNHCOCO)2]2–/1–/0/1+ supported by the tridentate bis-aryloxide benzimidazolin-2-ylidene pincer ligand benzNHCOCO2– (II) is presented. While reaction 2 equiv free II with ferrous precursor leads to isolation coordination polymer [Fe(benzNHCOCOK)2]n (1), treatment ferric salts allows for mononuclear, octahedral bis-pincer compound K[Fe(benzNHCOCO)2] (2) its crown-ether derivative [K(18c6)(THF)2][Fe(benzNHCOCO)2]...
We report high-valent iron complexes supported by N-heterocyclic carbene (NHC)-anchored, bis-phenolate pincer ligands that undergo ligand-to-metal charge transfer (LMCT) upon photoexcitation. The resulting excited states - with a lifetime in the picosecond range feature ligand-based, mixed-valence system and intense intervalence bands near-infrared region. Upon oxidation of complex, corresponding absorptions are also observed ground state. suggest spectroscopic hallmarks such LMCT provide...
Abstract Typified by LiTMP and TMPMgCl.LiCl, (TMP=2,2,6,6‐tetramethylpiperidide), s‐block metal amides have found widespread applications in arene deprotonative metalation. On the contrary, transition lack sufficient basicity to activate these substrates. Breaking new ground this field, here we present synthesis full characterisation of earth‐abundant metals M(TMP) 2 (M=Fe, Co). Uncovering a reactivity profile towards fluoroarenes, amide complexes can promote direct M−H exchange processes...
Reduction of the ferrous precursor [(TIMMNMes)Fe(Cl)]+ (1) (TIMMNMes = tris-[(3-mesitylimidazol-2-ylidene)methyl]amine) to low-valent iron(0) complex [(TIMMNMes)Fe(CO)3] (2) is presented, where tris(N-heterocyclic carbene) (NHC) ligand framework remains intact, yet coordination mode changed from 3-fold 2-fold carbene arms. Further, corresponding iron(I) complexes [(TIMMNMes)Fe(L)]+ (L free site, η1-N2, CO, py) (3) are synthesized and fully characterized. Complexes 1–3 demonstrate notable...
The mono-benzaldimine (HN═CHPh) complex [(tBupyrpyrr2)Fe(HN═CHPh)] (1-HN═CHPh) has been prepared by reaction of [(tBupyrpyrr2)Fe(OEt2)] (1-OEt2) (tBupyrpyrr2 = 2,6-bis(3,5-di-tert-butyl-pyrrolyl)pyridine) with one equivalent benzyl azide. Compound 1-HN═CHPh retains the cis-divacant octahedral coordination geometry akin to 1, as established single crystal X-ray diffraction study. A bis-HN═CHPh [(tBupyrpyrr2)Fe(HN═CHPh)2] (2) was also addition two equivalents azide and its molecular structure...
Abstract Reaction of the 6π‐electron aromatic four‐membered heterocycle (IPr) 2 C P ( 1 ) (IPr=1,3‐bis(2,6‐diisopropylphenyl)‐1,3‐dihydro‐2 H ‐imidazol‐2‐ylidene) with [Fe CO 9 ] gives neutral iron tricarbonyl complex [Fe(CO) 3 ‐η ‐{(IPr) }] ). Oxidation two equivalents ferrocenium salt, [Fe(Cp) ](BArF 24 ), affords dicationic 4 }](BArF The one‐electron oxidation proceeds under concomitant loss one ligand to give paramagnetic dicarbonyl radical cation 5 Reduction allows preparation 6 An...
The diiron(II) complex, [(OCO)Fe(MeCN)]