Category: 1273-73-0

Fukuzumi, Shunichi; Kotani, Hiroaki; Prokop, Katharine A.; Goldberg, David P. published the article 《Electron- and Hydride-Transfer Reactivity of an Isolable Manganese(V)-Oxo Complex》. Keywords: electron hydride transfer reactivity isolable manganese oxo complex.They researched the compound: Bromoferrocene( cas:1273-73-0 ).Synthetic Route of C10BrFe. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:1273-73-0) here.

The electron-transfer and hydride-transfer properties of an isolated manganese(V)-oxo complex, (TBP8Cz)MnV(O) (1) (TBP8Cz = octa-tert-corrolazinato) were determined by spectroscopic and kinetic methods. The manganese(V)-oxo complex 1 reacts rapidly with a series of ferrocene derivatives ([Fe(C5H4Me)2], [Fe(C5HMe4)2], and [Fe(C5Me5)2] = Fc*) to give the direct formation of [(TBP8Cz)MnIII(OH)]- ([2-OH]-), a two-electron-reduced product. The stoichiometry of these electron-transfer reactions was found to be (Fc derivative)/1 = 2:1 by spectral titration The rate constants of electron transfer from ferrocene derivatives to 1 at room temperature in benzonitrile were obtained, and the successful application of Marcus theory allowed for the determination of the reorganization energies (λ) of electron transfer. The λ values of electron transfer from the ferrocene derivatives to 1 are lower than those reported for a manganese(IV)-oxo porphyrin. The presumed one-electron-reduced intermediate, a MnIV complex, was not observed during the reduction of 1. However, a MnIV complex was successfully generated via one-electron oxidation of the MnIII precursor complex 2 to give [(TBP8Cz)MnIV]+ (3). Complex 3 exhibits a characteristic absorption band at λmax = 722 nm and an EPR spectrum at 15 K with g’max = 4.68, g’mid = 3.28, and g’min = 1.94, with well-resolved 55Mn hyperfine coupling, indicative of a d3 MnIVS = 3/2 ground state. Although electron transfer from [Fe(C5H4Me)2] to 1 is endergonic (uphill), two-electron reduction of 1 is made possible in the presence of proton donors (e.g., CH3CO2H, CF3CH2OH, and CH3OH). In the case of CH3CO2H, saturation behavior for the rate constants of electron transfer (ket) vs. acid concentration was observed, providing insight into the critical involvement of H+ in the mechanism of electron transfer. Complex 1 was also shown to be competent to oxidize a series of dihydronicotinamide adenine dinucleotide (NADH) analogs via formal hydride transfer to produce the corresponding NAD+ analogs and [2-OH]-. The logarithms of the observed second-order rate constants of hydride transfer (kH) from NADH analogs to 1 are linearly correlated with those of hydride transfer from the same series of NADH analogs to p-chloranil.

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Thiazolidine – Wikipedia,
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Application of 1273-73-0. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about Triferrocenyl complexes of tungsten(VI): the molecular structure in the solid state and dynamic behavior in solution of triferrocenyl(ferrocenyloxy)oxotungsten, WO(OFc)Fc3. Author is Herberhold, Max; Kniesel, Heidemarie; Haumaier, Ludwig; Thewalt, Ulf.

WO(X)Fc3 [X = Cl (I), OMe (II), OFc (III), OBu (IV); Fc = ferrocenyl] were obtained by treating WOCl4 with ferrocenyllithium in THF. Reaction of WOCl4 with a threefold excess of FcLi gives I, which may be converted into II using KOMe. Reaction of WOCl4 with a sixfold excess of FcLi gives a mixture containing III and IV in addition to ferrocene and biferrocene. According to the x-ray crystallog. anal., III has a trigonal-bipyramidal structure with three ferrocenyl ligands occupying the equatorial positions and an axial ferrocenoxy group coordinated trans to the oxo ligand. The three W-C(ferrocenyl) (average 2.092 Å) and the O-C(ferrocenyl) [1.33(1) Å] bond distances are remarkably short. The axial tungsten-oxygen distances correspond to a W:O double and a W-O single bond, resp. The 1H and 13C NMR spectra of III are temperature dependent because of a hindered rotation of the ferrocenyl ligands around the W-C(ferrocenyl) bonds.

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Thiazolidine – Wikipedia,
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Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, Research Support, U.S. Gov’t, Non-P.H.S., Macromolecular Rapid Communications called Electrochromic Poly(acetylene)s with Switchable Visible/Near-IR Absorption Characteristics, Author is Pauly, Anja C.; Varnado, C. Daniel Jr.; Bielawski, Christopher W.; Theato, Patrick, which mentions a compound: 1273-73-0, SMILESS is Br[C-]12[Fe+2]3456789([C-]%10C6=C7C8=C9%10)C1=C3C4=C25, Molecular C10BrFe, Quality Control of Bromoferrocene.

Ferrocene is incorporated into a poly(acetylene) derivative via the postpolymn. amidation of a polymer precursor bearing pentafluorophenyl ester-leaving groups with aminoferrocene. While the neutral polymer exhibits a strong absorbance at 553 nm due to its conjugated backbone, oxidation of the ferrocene moieties with silver tetrafluoroborate causes the material to absorb in the near-IR (λmax ≈1215 nm). Subsequent reduction of the oxidized polymer with decamethylferrocene restores the initial absorbance profile, demonstrating that the material features switchable visible/near-IR absorption characteristics.

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Thiazolidine – Wikipedia,
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The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about Syntheses based on organic derivatives of mercury. II. 1,3-Dihaloferrocenes, the main research direction is HALO FERROCENYL MERCURY DERIV; FERROCENYL MERCURY DERIV HALO; MERCURY DERIV HALO FERROCENYL.Electric Literature of C10BrFe.

cf. CA 64, 14215a. Keeping 12.8 g. Hg(OAc)2, 200 ml. MeOH, 8.82 g. chloroferrocene, and 30 ml. C6H6 20 min. and mixing with 20 g. CaCl2 in MeOH, then 400 ml. ice-H2O, gave after extraction with petr. ether of the separated precipitate and the extract passed over inactivated Al2O3 and elution with petroleum ether 41% unreacted chloroferrocene, while extraction of the remaining precipitate with 1:1 C6H6-petroleum ether gave fraction A which yielded 10% 1-chloro-1′-chloromercuriferrocene, m. 143-4°, on elution with CHCl3. Elution of fraction A with petroleum ether-C6H6 gave 17% 3,3′-bis(chloroferrocenyl)mercury. Similarly were obtained: 3,3′-bis(iodoferrocenyl)mercury, m. 175°; 3,3′-bis(chloroferrocenyl)mercury, m. 190°; 3,3′-bis(bromoferrocenyl) mercury (I), m. 179-80°. I with CuCl2 in hot Me2CO gave after brief heating and treatment with petroleum ether 84% 1,3-dichloroferrocene, m. 81°; similarly were prepared 90% 1,3-dibromoferrocene, m. 78.5-80°; 100% 1,3-diiodoferrocene (II), m. 47.5° (prepared from the R2Hg with iodine in ClCH2CH2Cl). Iodoferrocene and Cu2I2 with PhMgBr at 150° in dry N atm. 1 hr. gave 76% phenylferrocene, m. 110-11°, and a similar reaction of II with PhMgBr with Cu2I2 gave 21% 1,3-diphenylferrocene, m. 107°. The above mercuration of ferrocene also gave difficultly elutable 1,3-bis(bromomercuri)ferrocene, decomposed 190°. Ir spectra are reported.

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: Bromoferrocene(SMILESS: Br[C-]12[Fe+2]3456789([C-]%10C6=C7C8=C9%10)C1=C3C4=C25,cas:1273-73-0) is researched.Electric Literature of C10BrFe. The article 《Isolation, characterization, and synthetic utility of several solid organolithium compounds》 in relation to this compound, is published in Journal of Organometallic Chemistry. Let’s take a look at the latest research on this compound (cas:1273-73-0).

Pentachlorophenyllithium and ferrocenyllithium were isolated and characterized as relatively air-stable solids. The chem. reactivity of these organolithium compounds was investigated, and several carbene complexes of Cr and W were prepared Pentachlorophenyllithium adds to furan and therefore represents a solid benzyne precursor. 1,1′-Dilithioferrocene.2TMEDA (TMEDA = N,N,N’,N’-tetramethylethylenediamine), ferrocenyllithium. TMEDA, and 2-lithio[(dimethylamino)methyl]-ferrocene were isolated and characterized as air-sensitive solids. An attempted formation of 2,2′-dilithiobiphenyl from 2,2′-dibromobiphenyl and BuLi yielded a mixture of ∼80% of this dilithium reagent and ca. 20% of 2-bromo-2′-lithiobiphenyl.

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Related Products of 1273-73-0. 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 Electrochromic Poly(acetylene)s with Switchable Visible/Near-IR Absorption Characteristics. Author is Pauly, Anja C.; Varnado, C. Daniel Jr.; Bielawski, Christopher W.; Theato, Patrick.

Ferrocene is incorporated into a poly(acetylene) derivative via the postpolymn. amidation of a polymer precursor bearing pentafluorophenyl ester-leaving groups with aminoferrocene. While the neutral polymer exhibits a strong absorbance at 553 nm due to its conjugated backbone, oxidation of the ferrocene moieties with silver tetrafluoroborate causes the material to absorb in the near-IR (λmax ≈1215 nm). Subsequent reduction of the oxidized polymer with decamethylferrocene restores the initial absorbance profile, demonstrating that the material features switchable visible/near-IR absorption characteristics.

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Thiazolidine – Wikipedia,
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In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Halide-Mediated Ortho-Deprotonation Reactions Applied to the Synthesis of 1,2- and 1,3-Disubstituted Ferrocene Derivatives, published in 2015-08-10, which mentions a compound: 1273-73-0, mainly applied to halide deprotonation disubstituted ferrocene derivative; crystal mol structure bromodiiodoferrocene, Quality Control of Bromoferrocene.

The ortho-deprotonation of halide-substituted ferrocenes by treatment with lithium tetramethylpiperidide (LiTMP) has been investigated. Iodo-, bromo-, and chloro-substituted ferrocenes were easily deprotonated adjacent to the halide substituents. The synthetic applicability of this reaction was, however, limited by the fact that, depending on the temperature and the degree of halide substitution, scrambling of both iodo and bromo substituents at the ferrocene core took place. Iodoferrocenes could not be transformed selectively into ortho-substituted iodoferrocenes since, in the presence of LiTMP, the iodo substituents scrambled efficiently even at -78°, and this process had occurred before electrophiles had been added. Bromoferrocene and certain monobromo-substituted derivatives, however, could be efficiently ortho-deprotonated at low temperature and reacted with a number of electrophiles to afford 1,2- and 1,2,3-substituted ferrocene derivatives For example, 2-bromo-1-iodoferrocene was synthesized by ortho-deprotonation of bromoferrocene and reaction with the electrophiles diiodoethane and diiodotetrafluoroethane, resp. In this and related cases the iodide scrambling process and further product deprotonation due to the excess LiTMP could be suppressed efficiently by running the reaction at low temperature and in inverse mode. In contrast to the low-temperature process, at room temperature bromo substituents in bromoferrocenes scrambled in the presence of LiTMP. Chloro- and 1,2-dichloroferrocene could be ortho-deprotonated selectively, but in neither case was scrambling of a chloro substituent observed As a further application of this ortho-deprotonation reaction, a route for the synthesis of 1,3-disubstituted ferrocenes was developed. 1,3-Diiodoferrocene was accessible from bromoferrocene in four steps. On a multigram scale an overall yield of 41% was achieved. 1,3-Diiodoferrocene was further transformed into sym. 1,3-disubstituted ferrocenes (1,3-R2Fc; R = CHO, COOEt, CN, CH:CH2).

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Substitution of halogen in bromoferrocene by aromatic and heterocyclic radicals》. Authors are Nesmeyanov, A. N.; Sazonova, V. A.; Drozd, V. N..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 51, 9514b. Heating 0.3 g. bromoferrocene (I) with 1.8 g. Ph4BCu.C5H5N under N 0.5 hr. at 125-30° gave after extraction with Et2O and chromatography on Al2O3 in heptane 57% phenylferrocene; a 56% yield resulted from a similar reaction with I and Ph4BK in the presence of Cu2Br2moistened with pyridine. The reaction also gave some ferrocene (II), biferrocenyl, and probably polyphenylferrocenes. Similarly, (p-MeC6H4)4BNa and Cu2Br2 gave 53% p-tolylferrocene, while tetra-α-thienylboropotassium gave 81% α-thienylferrocene (III), m. 116.5-17.5°. Heating I with N-sodiopyrrole in the presence of Cu2Br2 0.5 hr. at 120° gave some II, 17% N-pyrrylferrocene, m. 83-3.5° (after sublimation in vacuo), and biferrocenyl. Tetra-1-indolylboropotassium similarly gave 35% N-indolylferrocene, m. 89-90°. Refluxing I with PhCCCu in Me2NCHO 3 hrs. under N gave 48% ferrocenylphenylacetylene, m. 126-7°.

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Computed Properties of C10BrFe. 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 Monohalogenated ferrocenes C5H5FeC5H4X (X = Cl, Br and I) and a second polymorph of C5H5FeC5H4I.

The structures of the three title monosubstituted ferrocenes, 1-chloroferrocene, [Fe(C5H5)(C5H4Cl)], (I), 1-bromoferrocene, [Fe(C5H5)(C5H4Br)], (II), and 1-iodoferrocene, [Fe(C5H5)(C5H4I)], (III), were determined at 100 K. The chloro- and bromoferrocenes are isomorphous crystals. The new triclinic polymorph [space group P1̅, Z = 4, T = 100 K] of iodoferrocene, (III), and the previously reported monoclinic polymorph of (III) were obtained by crystallization from EtOH solutions at 253 and 303 K, resp. All four phases contain two independent mols. in the unit cell. The relative orientations of the cyclopentadienyl (Cp) rings are eclipsed and staggered in the independent mols. of (I) and (II), while (III) demonstrates only an eclipsed conformation. The triclinic and monoclinic polymorphs of (III) contain nonbonded intermol. I···I contacts, causing different packing modes. In the triclinic form of (III), the mols. are arranged in zigzag tetramers, while in the monoclinic form the mols. are arranged in zigzag chains along the a axis. Crystallog. data for (III), along with the computed lattice energies of the two polymorphs, suggest that the monoclinic form is more stable.

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Formula: C10BrFe. 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 Mechanically-tunable quantum interference in ferrocene-based single-molecule junctions.

Ferrocenes are ubiquitous organometallic building blocks that comprise a Fe atom sandwiched between two cyclopentadienyl (Cp) rings that rotate freely at room temperature Of widespread interest in fundamental studies and real-world applications, they have also attracted some interest as functional elements of mol.-scale devices. Here, the impact of the configurational degrees of freedom of a ferrocene derivative on its single-mol. junction conductance is investigated. Measurements indicate that the conductance of the ferrocene derivative, which is suppressed by two orders of magnitude as compared to a fully conjugated analog, can be modulated by altering the junction configuration. Ab initio transport calculations show that the low conductance is a consequence of destructive quantum interference effects that arise from the hybridization of metal-based d-orbitals and the ligand-based π-system. By rotating the Cp rings, the hybridization, and thus the quantum interference, can be mech. controlled, resulting in a conductance modulation that is seen exptl.

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Reference:
Thiazolidine – Wikipedia,
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