Month: April 2022

Application In Synthesis of Bis(acetylacetonato)dioxomolybdenum(VI). 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: Bis(acetylacetonato)dioxomolybdenum(VI), is researched, Molecular C10H14MoO6, CAS is 17524-05-9, about Hierarchically Porous MoS2-Carbon Hollow Rhomboids for Superior Performance of the Anode of Sodium-Ion Batteries. Author is Han, Lifeng; Wu, Shide; Hu, Zhe; Chen, Mingzhe; Ding, Junwei; Wang, Shiwen; Zhang, Yong; Guo, Dongjie; Zhang, Li; Cao, Shaokui; Chou, Shulei.

It is always challenging to fabricate two-dimensional transition-metal dichalcogenides into multiple hollow micro-/nanostructures with improved properties for various potential applications. Here, hierarchically porous MoS2-C hollow rhomboids (MCHRs) have been creatively synthesized via a facile self-templated solvothermal approach. It has been clarified that the obtained MCHRs assembled beneath ultrathin γ-MnS and carbon cohybridized MoS2 nanosheets under the structural direction of the MnMoO4·0.49H2O self-template. The prepared MCHR anode of sodium-ion batteries exhibited a reversible capacity of 506 mA h g-1 at 0.1 A g-1, ultrahigh rate capabilities up to 10 A g-1 with 310 mA h g-1, and exceptional stability over 3000 cycles. This study provides inspiration for the rational design of hierarchically porous hollow nanostructures with specific geometries as an excellent electrode material for outstanding performance energy storage equipment.

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Nitrile – Wikipedia,
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Electric Literature of C48H52O4P2. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: (R)-2,2′-Bis[bis(3,5-dimethylphenyl)phosphino]-4,4′,6,6′-tetramethoxy-)-1,1′-biphenyl, is researched, Molecular C48H52O4P2, CAS is 1365531-89-0, about Biaryl diphosphine ligands and their ruthenium complexes: Preparation and use for catalytic hydrogenation of ketones. Author is Lorraine, Shannen; Abdur-Rashid, Kamaluddin; Jia, Wenli; Abdur-Rashid, Kareem; Maragh, Paul; Dasgupta, Tara.

Procedures for the preparation of the nucleophilic diphosphine ligands (R)-(4,4′,6,6′-tetramethoxybiphenyl-2,2′-diyl)bis(diphenylphosphine) ((R)-Ph-Garphos) and (S)-(4,4′,6,6′-tetramethoxybiphenyl-2,2′-diyl)bis(diphenylphosphine) ((S)-Ph-Garphos) were described. The ligands were used to prepare the ruthenium(II) Ph-Garphos complexes, chloro(p-cymene)(R)-(4,4′,6,6′-tetraamethoxybiphenyl-2,2′-diyl)bis(diphenylphosphine)ruthenium(II) chloride ([RuCl(p-cymene)(R)-Ph-Garphos]Cl (3)) and chloro(p-cymene)(S)-(4,4′,6,6′-tetraamethoxybiphenyl-2,2′-diyl)bis(diphenylphosphine)ruthenium(II) chloride ([RuCl(p-cymene)(S)-Ph-Garphos]Cl (4)). In the presence of the chiral diamine co-ligands (1R,2R)-1,2-diphenylethane-1,2-diamine (R,R-DPEN) and (1S,2S)-1,2-diphenylethane-1,2-diamine (S,S-DPEN), complexes 3 and 4 were found to be catalyst precursors for the enantioselective reduction of aryl ketones under mild conditions (room temperature and 3-4 atm of H2). The chiral alcs. were isolated in moderate to good yields and with enantioselectivities of up to 93%. The ruthenium complexes chloro(p-cymene)(R)-(4,4′,6,6′-tetramethoxybiphenyl-2,2′-diyl)bis(bis(3,5-dimethylphenyl)-phosphine)ruthenium(II) chloride ([RuCl(p-cymene)(R)-Xyl-Garphos]Cl (5)) and chloro(p-cymene)(S)-(4,4′,6,6′-tetramethoxybiphenyl-2,2′-diyl)bis(bis(3,5-dimethylphenyl)-phosphine)ruthenium(II) chloride ([RuCl(p-cymene)(S)-Xyl-Garphos]Cl (6)) were also prepared and used as catalyst precursors for the hydrogenation of aryl ketones in the presence of (R,R)-DPEN and (S,S)-DPEN. Significant improvements in the enantioselectivities of the alcs. (up to 98% ee.) were afforded. A combination of 6 and (S,S)-DPEN afforded (R)-1-(3-methoxyphenyl)ethanol in 89% yield and with 95% ee which was shown to be a suitable precursor for the preparation of (S)-rivastigmine.

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Name: Bis(acetylacetonato)dioxomolybdenum(VI). The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Bis(acetylacetonato)dioxomolybdenum(VI), is researched, Molecular C10H14MoO6, CAS is 17524-05-9, about Styrene selective oxidation to benzaldehyde catalyzed by acylhydrazone Mo complexes: Reaction parameter effects and kinetics. Author is Yang, Shuang; Li, Gong; Yang, Yujie; Zhu, Mengdi; Fu, Yuejiao; Xing, Na; Shi, Lei.

Three acylhydrazone molybdenum complexes were synthesized for the first time: [MoO2L1(EtOH)] (1), [MoO2L2(EtOH)] (2), [MoO2L3(EtOH)] (3), [H2L1 = 4-bromo- N’-(3,5-dichloro-2-hydroxybenzylidene)benzohydrazide, H2L2 = N’-(3,5-dichloro-2-hydr- oxybenzylidene)-3-hydroxy-4-methoxybenzohydrazide, H2L3 = N’-(3,5-dichloro-2-hydro- xybenzylidene)-4-trifluoromethylbenzohydrazide]. They were characterized by FTIR, UV-visible, 1H NMR and thermogravimetric method. Their crystal structures were determined by single crystal x-ray diffraction. The Mo atoms in the complexes were in octahedral coordination, with the equatorial plane defined by the phenolate O, imino N and enalate O atoms of the hydrazone ligands and one oxo group, with the axial positions occupied by one oxo group and one ethanol O atom. The catalytic properties of the three complexes for styrene oxidation were studied.

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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 Analytical and synthetic studies on the photodecomposition of nitroimidazole compounds, published in 1987-06-30, which mentions a compound: 4897-25-0, mainly applied to azathioprine photodegradation product identification, Product Details of 4897-25-0.

The photodegradation products and synthetic byproducts of azathioprine (I) were isolated and identified to study their potential role in the photosensitization process. Synthetic byproducts observed in the preparation of I included 1-methyl-5-chloroimidazole, 1-methyl-4-chloroimidazole, and 1-methyl-2,4,5-trichloroimidazole. Photolysis at wavelengths >300 nm for 1 h caused a marked change in the UV spectrum of I, giving increased absorption at longer wavelengths. This may be associated with its reported activity as a photosensitizer.

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Li, Kan; Li, Jing-jing; Zhao, Ni; Xie, Ting-ting; Di, Bin; Xu, Li-li published the article 《Thioether-based recyclable metal-organic frameworks for selective and efficient removal of Hg2+ from water》. Keywords: thioether metal organic framework removal mercury.They researched the compound: Pyridine-4-thiol( cas:4556-23-4 ).Safety of Pyridine-4-thiol. 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:4556-23-4) here.

Hg2+ is highly toxic and hazardous and widely found in polluted water. To remove mercury ions from wastewater, there is an urgent need to investigate and develop new adsorbents. Herein, we synthesized three novel thioether-based metal-organic frameworks (MOFs) through a facile diffusion method or a solvothermal strategy, i.e. [(ZnCl2)3(L1)2·χ(solvent)]n (1), [(Cu2I3O2)4(CH4N0.5)4(L1)4(DMA)4·3(H2O)·χ(solvent)]n (2) and [(CuBr2)2(L2)2 CH3CN·χ(solvent)]n (3), where L1 = 1,3,5-tris((pyridin-4-ylthio)methyl)benzene and L2 = 2,4,6-trimethoxy-1,3,5-tris((pyridin-4-ylthio)methyl)benzene. The obtained thioether-based MOFs were characterized by single-crystal X-ray diffraction, Fourier transform IR spectroscopy, elemental anal. and thermogravimetric anal. Further studies revealed that they could remove Hg2+ from water. They have high adsorptivity (up to 362 mg g-1) and are highly efficient in removing Hg2+ (up to 95%). Besides, these MOFs can be recycled and can selectively remove Hg2+ from water in the presence of other metal ions. Consequently, these MOFs are highly promising candidates for the selective absorption and removal of mercury ions from water.

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Nitrile – Wikipedia,
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Zhang, Meng; Wang, Yanan; Wang, Xu; Zhao, Bing; Ruan, Weidong published the article 《Surface-enhanced Raman scattering (SERS) on indium-doped CdO (ICO) substrates: New charge-transfer enhancement contribution from electrons in conduction bands》. Keywords: surface enhanced Raman scattering indium doped cadmium oxide; charge transfer enhancement contribution electron conduction band.They researched the compound: Pyridine-4-thiol( cas:4556-23-4 ).Name: Pyridine-4-thiol. 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:4556-23-4) here.

Surface-enhanced Raman scattering (SERS) substrates have shown rapid development in recent years, but the use of transparent conductive oxides (TCOs) in SERS is still limited. Here, a series of In-doped CdO (ICO) NPs with different In3+ doping contents x (x = 0, 0.025, 0.050, 0.075, 0.100, 0.125, 0.150, and 0.200) were synthesized by a hydrothermal method and first employed as a SERS platform. The structures and properties of the ICO NPs influenced by dopant concentration of In3+ ions were characterized by powder X-ray diffraction (XRD), inductively coupled plasma (ICP) anal., SEM (SEM), XPS, and Fourier transform IR (FTIR) spectroscopy. Furthermore, the SERS spectra of ICO-MPY were investigated. Interestingly, the enhancement was dominated by the charge-transfer (CT) contribution through the free electrons in conduction bands (CBs). The changes in electronic distributions in energy levels of ICO NPs at different doping contents were explored, and the corresponding effect on SERS was discussed by employing 633 and 785 nm excitation lines, resp. The CT route was found to be the excitation of electrons from CBs of semiconductor to the LUMO of mol., which provides a new perspective in understanding SERS mechanisms. The present work provides a new approach to develop potential semiconductive SERS substrates.

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Safety of 2,4,5-Triphenylimidazole. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 2,4,5-Triphenylimidazole, is researched, Molecular C21H16N2, CAS is 484-47-9, about Homoselective synthesis of 5-substituted 1H-tetrazoles and one-pot synthesis of 2,4,5-trisubstituted imidazole compounds using BNPs@SiO2-TPPTSA as a stable and new reusable nanocatalyst. Author is Khodamorady, Minoo; Ghobadi, Nazanin; Bahrami, Kiumars.

Considering the importance of tetrazole and imidazole derivatives in pharmacy, industry, and explosives, BNPs@SiO2-TPPTSA was easily prepared and used as an effective, stable, and renewable nanocatalyst for the homoselective synthesis of different 5-substituted 1H-tetrazoles and atom economic synthesis of 2,4,5-trisubstituted-1H-imidazoles in solventless conditions. BNPs@SiO2-TPPTSA was characterized by transmission electron microscopy (TEM), SEM (SEM), X-ray diffraction (XRD), energy dispersive X-ray anal. (EDX), thermal gravimetric-DTA (TGA-DTA), mapping, pH anal., and Fourier transform IR (FT-IR) techniques. Furthermore, the catalyst recycled for at least sequential five loads without a remarkable drop-in catalytic activity.

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Nitrile – Wikipedia,
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Synthetic Route of C4H4ClN3O2. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 5-Chloro-1-methyl-4-nitroimidazole, is researched, Molecular C4H4ClN3O2, CAS is 4897-25-0, about The synthesis of aryl 4-nitro-5-imidazolyl sulfone radiation sensitizers sterically protected against glutathione reaction. Author is Egolf, Roger A.; Heindel, Ned D..

Title sulfones I (R1 = R2 = Me, R3 = OCH2CO2H; R1 = Cl, R2 = Me, Cl, R3 = H; R1 = R3 = Cl, R2 = CO2H) were prepared by treating chloroimidazole II with thiophenols III in the presence of NH3 in EtOH and oxidizing the resulting sulfides with H2O2 in HOAc. Title neopentyl derivatives IV (R1 = R2 = Me, R3 = OCH2CO2H; R1 = Cl, R2 = Me, Cl, R3 = H; R1 = CO2Me, R2 = R3 = H) were prepared similarly. I and V were tested as radiation sensitizers of hypoxic carcinoma cells. These sterically crowded imidazoles show decreased displacement reactivity with glutathione at C-5, a major metabolic reaction known to deplete effective plasma drug levels in traditional aryl imidazolyl sulfone radiation sensitizers.

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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: Pyridine-4-thiol, is researched, Molecular C5H5NS, CAS is 4556-23-4, about Eliminating irreproducibility in SERS substrates.Formula: C5H5NS.

Irreproducibility in surface-enhanced Raman spectroscopy (SERS) due to variability among substrates is a source of recurrent debate within the field. It is regarded as a major hurdle towards the widespread adoption of SERS as a sensing platform. Most of the literature focused on developing substrates for various applications considers reproducibility of lower importance. Here, we address and analyze the sources of this irreproducibility in order to show how these can be minimised. We apply our findings to a simple substrate demonstrating reproducible SERS measurements with relative standard deviations well below 1% between different batches and days. Identifying the sources of irreproducibility and understanding how to reduce these can aid in the transition of SERS from the lab to real-world applications.

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Nitrile – Wikipedia,
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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: 17524-05-9, is researched, Molecular C10H14MoO6, about Engineering stable and fast sodium diffusion route by constructing hierarchical MoS2 hollow spheres, the main research direction is molybdenum sulfide hollow sphere sodium diffusion; Anode material; MoS(2) hollow spheres; Self-templating method; Sodium-ion battery.Synthetic Route of C10H14MoO6.

Two-dimensional layered transition metal dichalcogenides, such as MoS2, have been considered to be a promising anode material for sodium storage. However, their performance have been limited by the sluggish sodium diffusion kinetics. In this work, high performance anode material was obtained through constructing hierarchical MoS2 nanosheets assembled hollow spheres. The used self-templating method show more feasibility than the commonly reported template removal-involved routes. The prepared hollow structure can also provide rapid and stable electron/sodium ion transport without the assistance of conducting substrates, which enables the MoS2 anodes exhibit a high specific capacity of 527 mAh g-1 at 0.1 A g-1. Even at a high c.d. of 1 A g-1, capacity of 357 mAh g-1 can still be obtained after 500 cycles (capacity retention ≈94.5%). This work provides a facile way towards high performance MoS2 anode materials for sodium-ion battery.

Compound(17524-05-9)Synthetic Route of C10H14MoO6 received a lot of attention, and I have introduced some compounds in other articles, similar to this compound(Bis(acetylacetonato)dioxomolybdenum(VI)), if you are interested, you can check out my other related articles.

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Nitrile – Wikipedia,
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