0000000001299556

AUTHOR

Philipp Veit

showing 12 related works from this author

On the mechanism of imine elimination from Fischer tungsten carbene complexes

2016

(Aminoferrocenyl)(ferrocenyl)carbene(pentacarbonyl)tungsten(0) (CO)5W=C(NHFc)Fc (W(CO)5(E-2)) is synthesized by nucleophilic substitution of the ethoxy group of (CO)5W=C(OEt)Fc (M(CO)5(1Et)) by ferrocenyl amide Fc-NH– (Fc = ferrocenyl). W(CO)5(E-2) thermally and photochemically eliminates bulky E-1,2-diferrocenylimine (E-3) via a formal 1,2-H shift from the N to the carbene C atom. Kinetic and mechanistic studies to the formation of imine E-3 are performed by NMR, IR and UV–vis spectroscopy and liquid injection field desorption ionization (LIFDI) mass spectrometry as well as by trapping experiments for low-coordinate tungsten complexes with triphenylphosphane. W(CO)5(E-2) decays thermally i…

tungstenIminemechanism010402 general chemistryPhotochemistry01 natural sciencesMedicinal chemistryReductive eliminationFull Research Paperlcsh:QD241-441chemistry.chemical_compoundlcsh:Organic chemistryAmideNucleophilic substitutionlcsh:Science010405 organic chemistryChemistryOrganic ChemistryferroceneOxidative addition0104 chemical sciencesChemistrycarbene complexesAlkoxy groupPseudorotationlcsh:QimineCarbeneBeilstein Journal of Organic Chemistry
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Competitive NH···Ru/Fe Hydrogen Bonding in Ferrocenyl Ruthenocenyl Tosyl Hydrazone

2016

A strong nonclassical NH···Fe intramolecular hydrogen bond (IHB) is present in the literature-known diferrocenyl tosyl hydrazone (1). Here, we confirm by NMR and IR spectroscopy as well as by XRD methods that an analogous NH···Ru IHB is present in the heavier homologue diruthenocenyl tosyl hydrazone (2). The NH···Ru IHB in 2 is stronger than the NH···Fe IHB in 1 by 6 kJ mol–1, as determined by IR spectroscopy. Further, we probed the E/Z isomer directing abilities of NH···M IHBs in the synthesis of the mixed metallocenyl compound ferrocenyl ruthenocenyl tosyl hydrazone (3). 3 is obtained as a mixture of the Z and E isomers (3a,b) with NH···Ru and NH···Fe IHBs, respectively. At 111 °C, 3a is …

chemistry.chemical_classification010405 organic chemistryHydrogen bondOrganic ChemistryInfrared spectroscopyHydrazone010402 general chemistryPhotochemistry01 natural sciencesMedicinal chemistry0104 chemical sciencesInorganic Chemistrychemistry.chemical_compoundTosylchemistryIntramolecular forcePhysical and Theoretical ChemistryOrganometallics
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Gold(ii) in redox-switchable gold(i) catalysis

2019

Chemical communications 55(32), 4615 - 4618 (2019). doi:10.1039/C9CC00283A

Metals and AlloysHalideGeneral Chemistry540Combinatorial chemistryRedoxCatalysisSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsCatalysischemistry.chemical_compoundchemistryddc:540Materials ChemistryCeramics and CompositesBenzamide
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Preparation, Properties, and Reactivity of (Aminoferrocenyl)(ferrocenyl)carbene(pentacarbonyl)chromium(0) as Bulky Isolobal Trimetallo-amide

2015

Nucleophilic substitution of the ethoxy substituent in the Fischer carbene complex (ethoxy)(ferrocenyl)carbene(pentacarbonyl)chromium(0) (1) by ferrocenyl amide [Fc-NH]– [2-H]– gives the hetero trimetallic complex (aminoferrocenyl)(ferrocenyl)carbene (pentacarbonyl)chromium(0) (3). As the Cr(CO)5 fragment is isolobal to oxygen or sulfur 3 can be viewed as an isolobal metallo analogue to diferrocenylamide (Fc)(FcNH)C=O (4) and diferrocenylthioamide (Fc)(FcNH)C=S (5). The impact of the formal replacement of O/S by Cr(CO)5 in 3 is studied with respect to steric and electronic consequences as well as reactivity by spectroscopic, diffraction, electrochemical and theoretical methods.

Inorganic ChemistrySteric effectschemistry.chemical_compoundchemistryFerroceneAmideTransition metal carbene complexNucleophilic substitutionOrganic chemistryReactivity (chemistry)Isolobal principleMedicinal chemistryCarbeneZeitschrift für anorganische und allgemeine Chemie
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Unexpected C–C bond formation with a ferrocenyl Fischer carbene complex

2020

Inorganic ChemistryC c couplingchemistry.chemical_compoundChromium540 Chemistry and allied sciencesFerrocenechemistryTransition metal carbene complex540 Chemiechemistry.chemical_elementBond formationMedicinal chemistry
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Diferrocenyl tosyl hydrazone with an ultrastrong NHFe hydrogen bond as double click switch.

2014

The intramolecular NH⋯Fe hydrogen bond in diferrocenyl hydrazone 2 raises the barrier for intramolecular electron transfer in its mixed-valent cation 2+ and is only disrupted by double oxidation to 22+.

chemistry.chemical_classificationHydrogen bondMetals and AlloysHydrazoneGeneral ChemistryPhotochemistryCatalysisSurfaces Coatings and FilmsElectronic Optical and Magnetic Materialschemistry.chemical_compoundElectron transferchemistryTosylIntramolecular forceMaterials ChemistryCeramics and CompositesChemical communications (Cambridge, England)
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CCDC 1426094: Experimental Crystal Structure Determination

2016

Related Article: Philipp Veit, Ephraim Prantl, Christoph Förster, Katja Heinze|2016|Organometallics|35|249|doi:10.1021/acs.organomet.5b00963

Space GroupCrystallography(mu-N'-(cyclopenta-13-dien-1-yl(cyclopenta-24-dien-1-ylidene)methyl)-4-methylbenzenesulfonohydrazide)-bis(eta5-cyclopentadienyl)-di-rutheniumCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1962440: Experimental Crystal Structure Determination

2020

Related Article: Philipp Veit, Sebastian Seibert, Christoph Förster, Katja Heinze|2020|Z.Anorg.Allg.Chem.|646|940|doi:10.1002/zaac.201900350

Space GroupCrystallographyCrystal SystemN2-diferrocenylacetamideCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1426095: Experimental Crystal Structure Determination

2016

Related Article: Philipp Veit, Ephraim Prantl, Christoph Förster, Katja Heinze|2016|Organometallics|35|249|doi:10.1021/acs.organomet.5b00963

Space GroupCrystallographyCrystal SystemCrystal Structure(mu-N'-(cyclopenta-13-dien-1-yl(cyclopenta-24-dien-1-ylidene)methyl)-4-methylbenzenesulfonohydrazide)-bis(eta5-cyclopentadienyl)-iron-rutheniumCell ParametersExperimental 3D Coordinates
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CCDC 1962439: Experimental Crystal Structure Determination

2020

Related Article: Philipp Veit, Sebastian Seibert, Christoph Förster, Katja Heinze|2020|Z.Anorg.Allg.Chem.|646|940|doi:10.1002/zaac.201900350

4-ethoxy-234-triferrocenylcyclobut-2-en-1-oneSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1031559: Experimental Crystal Structure Determination

2014

Related Article: Christoph Förster, Philipp Veit, Vadim Ksenofontov, Katja Heinze|2015|Chem.Commun.|51|1514|doi:10.1039/C4CC08868A

Space GroupCrystallographyN'-(bis(Ferrocenyl)methylidene)-4-methylbenzenesulfonohydrazideCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1409670: Experimental Crystal Structure Determination

2015

Related Article: Philipp Veit, Christoph Förster, Sebastian Seibert and Katja Heinze|2015|Z.Anorg.Allg.Chem.|641|2083|doi:10.1002/zaac.201500562

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameters(2-ferrocenyl-1-(ferrocenylamino)ethylidene)-pentacarbonyl-chromiumExperimental 3D Coordinates
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