Category: 1273-73-0

Product Details of 1273-73-0. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about Dipole moments and internal rotation in 1,1′-dihaloferrocenes. Author is Sorriso, S.; Cardaci, G.; Murgia, S. M..

The dipole moments of bromoferrocene, iodoferrocene, 1,1′-dibromoferrocene, and 1-1′-diiodoferrocene have been measured in C6H6. They indicate that the potential barrier between the cis and trans forms, which is very small for 1,1′-dichloroferrocene, increases for 1,1′-dibromo- and 1,1′-diiodoferrocene. The potential energy function shows min. at 36°, 108° and 180°. The differences ΔE1 = E36° – E180° for the series have been calculated on the assumption that the min. at 180° and 108° are equal. The values obtained are consistent with increasing steric hindrance in the series Cl, Br, I.

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Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about Ferrocene and related compounds. VIII. Internal rotation of the ferrocene molecule.Safety of Bromoferrocene.

cf. CA 59, 5195h. The dipole moments of chloro- and bromoferrocene, measured at 20°, and of 1,1-dichloro- and 1,1-dibromoferrocene, measured at +5 and -20 to +130°, resp., are nearly identical to those of the corresponding monohalobenzenes. The values obtained for the dipole moments of the dihaloferrocenes at various temperatures can be used to calculate the energy differences of the 3 min. of the potential energy curves of internal rotation corresponding to the 3 antiprismatic conformations. A comparison of the curves with those of 1,2-dihaloethanes reveals that the energy barriers of internal rotation are smaller in ferrocene than in ethane. Attempts were made to calculate the contours of the potential energy curves of ferrocene and its halogen derivatives

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Diazo compounds of ferrocene》. Authors are Nesmeyanov, A. N.; Drozd, V. N.; Sazonova, V. A..The article about the compound:Bromoferrocenecas:1273-73-0,SMILESS:Br[C-]12[Fe+2]3456789([C-]%10C6=C7C8=C9%10)C1=C3C4=C25).COA of Formula: C10BrFe. Through the article, more information about this compound (cas:1273-73-0) is conveyed.

cf. CA 52, 14579b. Since ferrocenediazonium salts cannot be prepared with HNO2 owing to destruction of the ring by this acid, an indirect method was devised. Diazoaminoferrocene was added at -4(1° to concentrated HCl and the mixture gradually warmed to -20°, when a violet color of the diazonium salt appeared, while at -15°, N evolution commenced and terminated at -5°; crystals of chloroferrocene precipitated After dilution and extraction with Et2O, the organic extract was washed with aqueous KOH and H2O, and evaporated yielding 72% chloroferrocene (I), m. 57-8°. The mother liquor after neutralization and extraction with Et2O gave 62% ferrocenylamine, m. 154-5°. Similar treatment of benzenediazoaminoferrocene gave 76% I and traces of ferrocenylamine; similar decompn, in concentrated HBr or HI gave 70% bromoferrocene, m. 32-3°, or 72% iodoferrocene, m. 42 4°, resp. Similar reaction with 40% H2SO4 in the presence of Et2O gave a solution containing hydroxyferrocene, which was isolated as the benzoyl derivative, m. 108.5-9 5° in 3% yield. Benzenediazoaminoferrocene hydrolyzed as above in concentrated HCl, warmed to -20° to form the diazonium salt solution, and treated with 2-C10H7OH in 10% KOH in the cold gave, after chromatog. purification on Al2O3, 48% 1-ferroceneazo-2-naphthol (II), m. 151-2°, a green solid, along with 28% I; II gave violet solutions in organic solvents and was insoluble in alkalies. 1,1′-Bis(benzenediazoamino)ferrocene treated similarly in the cold with concentrated HCl gave a violet solution of the bis(diazonium salt), which with 2-C10H7OH as above gave a little II, 35% red 1-benzeneazo-2-naphthol, and 24% black ferrocene-1,1′-bis(1-azo-2-naphthol), decompg 212-13°.

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Category: thiazolidine. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about Triferrocenylborane and its amine adducts.

The synthesis and characterization by IR, diffuse reflectance, thermogravimetric and Moessbauer techniques of triferrocenylborane and its adducts with ammonia, methylamine, ethylamine, propylamine, dimethylamine, and pyridine, are reported. Bands in the 1250 and 760 cm-1 IR regions are assigned to vibration of the B-C and B-N bonds, resp. In the visible region the spectra show besides the two typical ferrocene bands, shifted to lower frequency, a third one around 15,000 cm-1, probably due to the splitting of the first excited level of ferrocene caused by its decrease in symmetry when bonding covalently to boron in triferrocenylborane. Moessbauer spectroscopy shows that the s-electron d. around the 57Fe nucleus is higher in triferrocenylborane than in ferrocene; part of this s-electron d. is decreased by addnl. d-electron d. in the case of the adduct compounds

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Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 1273-73-0, is researched, Molecular C10BrFe, about Dye Regeneration Kinetics in Dye-Sensitized Solar Cells, the main research direction is redox electrochem kinetics dye sensitized solar cell; solar cell dye sensitized electrochem regeneration; carbazole thiophene dye regeneration solar cell.Related Products of 1273-73-0.

The ideal driving force for dye regeneration is an important parameter for the design of efficient dye-sensitized solar cells. Here, nanosecond laser transient absorption spectroscopy was used to measure the rates of regeneration of six organic carbazole-based dyes by nine ferrocene derivatives whose redox potentials vary by 0.85 V, resulting in 54 different driving-force conditions. The reaction follows the behavior expected for the Marcus normal region for driving forces below 29 kJ mol-1 (ΔE = 0.30 V). Driving forces of 29-101 kJ mol-1 (ΔE = 0.30-1.05 V) resulted in similar reaction rates, indicating that dye regeneration is diffusion controlled. Quant. dye regeneration (theor. regeneration yield 99.9%) can be achieved with a driving force of 20-25 kJ mol-1 (ΔE ≈ 0.20-0.25 V).

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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: Bromoferrocene( cas:1273-73-0 ) is researched.Computed Properties of C10BrFe.Saji, Tetsuo; Ito, Naoyuki published the article 《The electrochemical cleavage of carbon-halogen bonds of haloferrocenes》 about this compound( cas:1273-73-0 ) in Bulletin of the Chemical Society of Japan. Keywords: haloferrocene cyclic voltammetry; iodoferrocene cyclic voltammetry; bromoferrocene cyclic voltammetry; chloroferrocene cyclic voltammetry; electroreduction haloferrocene. Let’s learn more about this compound (cas:1273-73-0).

Cyclic voltammetric studies for chloroferrocene  [1273-74-1], bromoferrocene  [1273-73-0], and iodoferrocene  [1273-76-3] in ethylene glycol di-Me ether at -45° were reported. The cyclic voltammogram and the absorption spectrum of the solution after the exhaustive controlled-potential reduction for the reduction step of haloferrocene show a quant. formation of ferrocene and a cleavage of the C-halogen bond of haloferrocene.

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Safety of Bromoferrocene. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about Reactions of haloferrocenes with organolithium compounds. Author is Sonoda, Akio; Moritani, Ichiro.

Reactions of BuLi or PhLi with chloroferrocene (I), 1,1′-dichloroferrocene (II), and bromoferrocene (III) were investigated. I (0.802 g) in 25 ml Et2O treated with 200 millimoles. BuLi in Et2O and quenched with H2O gave 0.033 g ferrocene (IV) and 0.534 g I. Lithiation of 0.870 g I followed by carbonation and esterification afforded 0.398 g Me 2-chloroferrocenecarboxylate (V) and 0.051 g di-Me 2-chloroferrocene-1,1′-dicarboxylate. Similarly I and PhLi gave 21% V. Heating I and PhLi 4.5 hr and quenching with H2O afforded 50% I, 8% IV, and 24% phenylferrocene (V). However no ferrocyne was detected in attempted capture with some dienes. Similarly lithiation of II followed by carbonation and esterification gave meso and racemic forms, m. 117-17.5° and 110-11°, of di-Me 2,2′-dichloroferrocenedicarboxylates in 48% yield. The reaction of III with BuLi at -78° followed by quenching with H2O gave 36% IV and 37% IV, whereas lithiation at room temperature gave 99% IV. Treating III with PhLi also afforded small amount of V. Lithiation at the 2-position is favored in the case of the Cl compound whereas Br-Li exchange is favored in the case of the Br compound I lithiated with BuLi and treated with HgBr2 gave bis(2-chloroferrocenyl)mercury (VI), m. 219-20°. Similarly bis(2,1′-dichloroferrocenyl)mercury was prepared Attempted capture of ferrocyne by heating VI in tetracyclone ended in failure, the product being IV.

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Application of 1273-73-0. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about Reactions of haloferrocenes. II. Kinetic studies of the reaction of haloferrocene with copper(1) chloride-pyridine complex. Author is Sato, Masaru; Motoyama, Izumi; Hata, Kazuo.

The reaction of bromoferrocene with CuCl-C5H5N complex was second-order; first-order in each of bromoferrocene and CuCl-C5H5N. Competitive reactions between bromoferrocene and PhBr indicated that bromoferrocene was 103 times more reactive than PhBr in the halogenexchange reaction. The effects of pyridine bases on the halogen-exchange reaction of bromoferrocene were examined, and the trend of results was different from that of PhBr.

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Application In Synthesis of Bromoferrocene. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about Redox-Rich Metallocene Tetrazene Complexes: Synthesis, Structure, Electrochemistry, and Catalysis. Author is Vanicek, Stefan; Jochriem, Markus; Hassenrueck, Christopher; Roy, Souvik; Kopacka, Holger; Wurst, Klaus; Mueller, Thomas; Winter, Rainer F.; Reisner, Erwin; Bildstein, Benno.

Thermal or photochem. metal-centered cycloaddition reactions of azidocobaltocenium hexafluorophosphate or azidoferrocene with (cyclooctadiene)(cyclopentadienyl)Co(I) afforded the first metallocenyl-substituted tetrazene cyclopentadienyl cobalt complexes together with azocobaltocenium or azoferrocene as side products. The trimetallic CpCo compounds are highly conjugated, colored and redox-active metallo-aromatic compounds, as shown by their spectroscopic, structural and electrochem. properties. The CpCo-tetrazenido complex with two terminally appended cobaltocene units catalyzes electrochem. proton reduction from acetic acid at a mild overpotential (0.35 V). Replacing cobaltocene with ferrocene moieties rendered the complex inactive toward catalysis.

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Recommanded Product: Bromoferrocene. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about Synthesis of perfluoroalkylthio-substituted ferrocenes.

Mono- and bis(trifluoromethylthio)-substituted and perfluorooctanesulfonylferrocene derivatives were prepared by nucleophilic substitution reactions on the ferrocene core. Thus, Hg(SCF3)2 was activated in situ by Cu and used for nucleophilic displacement reactions of bromide. Trifluoromethylsulfonylferrocene was not accessible by this method. The reaction of lithioferrocene with trifluoromethylsulfonyl chloride gave chloroferrocene in small yield, presumably due to the high lattice energy of solid LiF. On the other hand, the known trifluoromethylferrocene was obtained as the only isolable compound from the photochem. reaction of CF3SSCF3 with ferrocene. The same product was detected in small amounts in the reaction of chloromercuryferrocene with trifluoromethylsulfonyl chloride. It thus appears that most established methods for trifluoromethylation of purely organic compounds fail for ferrocene due to concurring redox reactions. The new compounds have been comprehensively characterized by elemental analyses, NMR and IR spectroscopy, mass spectrometry, and electrochem. The SCF3 group appears to be almost as electron-withdrawing as a trifluoromethyl group on the ferrocene core.

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