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Showing 1 to 20 of 119 for “"Ferrocene"”.
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Vibrational and thermodynamic properties of ferrocene
… and thermodynamic properties of crystalline ferrocene (dicyclopentadienyl iron, Fe(CH)2' Fc), and dilute soluSStions of Fc in the liq-uid crystals 4-n-hexyloxybenzylidene 4'-npropylaniline (HBPA) and terephthal-bis-butylaniline (TBBA) have been studied using Mossbauer spectroscopy. The recoil …
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Substituent effects upon the reactions of ferrocene
Includes bibliographical references.
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Towards the synthesis of ferrocene nucleic acids
… were combined in an attempt to synthesise ferrocene modified DNA. Two modified ferrocene monomers were attempted to be incorporated into oligonucleotide strands, using solid state phosphoramidite DNA synthesis techniques, and characterised using MALDI-ToF Mass Spectrometry. CD and Tm …
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Synthesis and Characterization of New Cyclic and Acylic Ferrocene Peptide Conjugates
… conjugates were synthesized and then coupled to ferrocene to give the corresponding organometallic conjugates. The first step of the synthesis was achieved by esterification of peptides with the phenol group of the Dpp. The next step was the removal of the protecting Boc group and the addition of …
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Asymmetrische Synthese planar- und zentral-chiraler 1,2,3-trisubstituierter und 1,3-disubstituierter Ferrocene
Metallocenes and their most important derivative, ferrocenes, are important building blocks in many areas of modern organic chemistry due to their unique electronic and steric properties. Ferrocenes are predominantly used in catalysis, however, nowadays they have also found application in material …
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Experimental and theoretical investigation of the electronic structures of ferrocene-peptide conjugates
… of modified helical peptides, specifically ferrocene-(proline)x-benzyl ester (referred to as Fc-Proₓ-OBz), is presented. Soft X-ray absorption (XAS) and emission (XES) spectroscopy using synchrotron radiation are used to probe the unoccupied and occupied partial densities of electronic …
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Ferrocene-derived Heterobimetallic Supramolecular Architectures: Synthesis, Guest Encapsulation and Stimulus-Responsive Studies
… [PdmLn]x+ complexes bearing symmetrical ferrocene-derived ligands through the formation of Pd–pyridyl bonds have been designed to allow for disassembly and reassembly. The formation of a series of PdL, PdL2 or Pd2L4 structures was possible through controlling the substitution pattern of …
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Calixarene Linked Bis-Porphyrin Hosts for Fullerenes and the Assembly of Supramolecular Ferrocene-Porphyrin-Fullerene Triads
… of the calixarene scaffold with ferrocene for the preparation of supramolecular triads. The presence of a secondary donor is expected to increase the lifetime of the photoinduced charge separated state through a second electron transfer from the ferrocene to the porphyrin. Chapter …
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The Effect of The Solid-State Environment on Intramolecular Electron-Transfer Rates in Mixed-Valence Complexes (Ferrocene)
… ions in the mixed-valence 1',6'-disubstituted biferrocene cation is emerging. The x-ray structures of diiodo-, dichloro-, and di-n-butylbiferrocenium triiodide salts have been determined. Two iron ions are on opposite sides of a planar fulvenide ligand. 1',6'-Dichlorobiferrocenium octaiodide(2-) …
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Modulation of Metal Coordination and Redox Properties of the Engineered Purple copper(A) and Ferrocene Centers in Azurin
Finally, the temperature effect on the pH of biological buffers was studied. Colorimetric determination of apparent pH using indicator dyes revealed significant changes in the apparent pH of buffer solutions at cryotemperatures.
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Electrochemically-mediated membrane separations for carbon dioxide capture
… is carbon capture and sequestration. A quinone-ferrocene electrolyte is proposed as a novel chemistry for electrochemical carbon capture. Quantitative analyses are presented for two designs, and experimental results are provided for the quinone-ferrocene system in two configurations. The first …
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Toward Hydrogenase mimicry : subjecting the problem to three different approaches
… A wide range of sulfur containing ferrocene-peptide derivatives were synthesized and fully characterized. As a second approach, organic self-assembled oligoquinoline were designed and synthesized. These two kind of structures were further used a scaffold for Hydrogenase mimics. In …
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Selective Labelling of Peptides with Organometallic Compounds - Chemical and Biological Characterization
… as a model target molecule, while ferrocene and cobaltocenium compounds served as metal markers. Preparation of enkephalin and the subsequent labelling with ferrocene- and cobaltoce-nium carboxylic acids were carried out using solid phase peptide synthesis (SPPS). These synthetic …
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Self-assembled thin polymer film used for sensing application
… films derived from PS-b-PMMA were modified with ferrocene redox moieties having different linker lengths in the organic phase. The surface functionalization efficiency was quantitatively assessed by measuring the monovalent probe cations released from the surface COOH groups via cation-exchange …
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Planar chirale Metallocene
… as a new chiral ortho-directing group for ferrocenes. By variation of the metal fragment and other structural properties of a published chiral ligand, a cyclopentadienylrhenium(I)tricarbonyl complex was identified as more selective than the original ferrocene system in the asymmetric phenyl …
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Thermodynamics of Mobile Order Theory: Solubility and Partition Aspects
… and phenanthrene), and the organometallic ferrocene were studied in a wide array of solvents. Mobile order theory predictive equations were derived and percent average absolute deviations between experimental and calculated mole fraction solubilities for each solute were as follows: monuron …
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Synthese und Charakterisierung von mono- und 1,1´-di-substituierten Ferrocenen sowie [3]- und [4]Ferrocenophanen und ihre 57Fe-NMR-spektroskopische Untersuchung
… können. In der Literatur sind bereits zahlreiche Ferrocene mit gleichartigen Substituenten bekannt. 1,1´-disubstituierte Ferrocene mit unterschiedlichen Heterosubstituenten, sowie [3]- und [4]Ferrocenophane mit zwei oder mehr unterschiedlichen Substituenten in der Brücke fanden jedoch bisher nur …
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Application of factor analysis to spectroscopic methods
… component. The spectra of three substituted ferrocenes are giver 1,4,5,6,7,7-hexachloro-5-norbornene-2,3-dicarboxylic anhydride ferrocene, l-l'(2,4-dichlorobenzoyl) ferrocene, and 3,4-dichlorobenzoyl ferrocene. The source of the multiple components from each of the samples is discussed and …
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The synthesis of N-substituted ferrocenes and CH activation towards the synthesis of Organosilanols
… and diastereoselective C–H activation on ferrocenes. After screening many other directing groups, only ferrocenyl ethanol and pyrazoles furnished the desired ortho-silylated product. The synthesis of planar-chiral ferrocene-based organosilanols was also described. High enantioselectivities …
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