Category: 1111-67-7

Reference of 1111-67-7, A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. Reference of 1111-67-7, Name is Cuprous thiocyanate, molecular formula is CCuNS. In a Article, authors is Li, Qun，once mentioned of Reference of 1111-67-7

Electronic Modulation of Electrocatalytically Active Center of Cu7S4 Nanodisks by Cobalt-Doping for Highly Efficient Oxygen Evolution Reaction

Cu-based electrocatalysts have seldom been studied for water oxidation because of their inferior activity and poor stability regardless of their low cost and environmentally benign nature. Therefore, exploring an efficient way to improve the activity of Cu-based electrocatalysts is very important for their practical application. Modifying electronic structure of the electrocatalytically active center of electrocatalysts by metal doping to favor the electron transfer between catalyst active sites and electrode is an important approach to optimize hydrogen and oxygen species adsorption energy, thus leading to the enhanced intrinsic electrocatalytic activity. Herein, Co-doped Cu7S4 nanodisks were synthesized and investigated as highly efficient electrocatalyst for oxygen evolution reaction (OER) due to the optimized electronic structure of the active center. Density-functional theory (DFT) calculations reveal that Co-engineered Cu7S4 could accelerate electron transfer between Co and Cu sites, thus decrease the energy barriers of intermediates and products during OER, which are crucial for enhanced catalytic properties. As expected, Co-engineered Cu7S4 nanodisks exhibit a low overpotential of 270 mV to achieve current density of 10 mA cm-2 as well as decreased Tafel slope and enhanced turnover frequencies as compared to bare Cu7S4. This discovery not only provides low-cost and efficient Cu-based electrocatalyst by Co doping, but also exhibits an in-depth insight into the mechanism of the enhanced OER properties.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.Reference of 1111-67-7, you can also check out more blogs aboutReference of 1111-67-7

Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 1111-67-7, name is Cuprous thiocyanate, introducing its new discovery. name: Cuprous thiocyanate

Two novel cation-induced supramolecular polymers with 2-3D polymeric cuprous thiocyanate frameworks: Synthesis, characterization and photocatalytic activities for the degradation of organic dye contaminants

In order to systematically explore the photocatalytic activity of the inorganic-organic supramolecular polymers induced by 1,1?-(1,n-alkylidene)bis[4-methylpyridinium] (n = 1-2) cations, two novel cation-induced compounds, {(bmpm) [Cu2(SCN)4]}n (bmpm = 1,1?-methylenebis[4-methylpyridinium] (1) and {(bmpe) [Cu2(SCN)4]}n (bmpe = 1,1?-(1,2-ethanediyl)bis[4-methylpyridinium] (2) were obtained and characterized by X-ray crystallography. Compound 1 has a 3D framework with the cations trapped within host network cavities. Compound 2 possesses an infinite 2D supramolecular polypseudorotaxane structure linked by bridging thiocyanate groups. The third-order NLO, optical band gaps and photocatalytic activities of 1 and 2 were also evaluated. Remarkably, both 1 and 2 exhibited good photocatalytic abilities.

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

Because a catalyst decreases the height of the energy barrier, COA of Formula: CCuNS, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.COA of Formula: CCuNS, Name is Cuprous thiocyanate, molecular formula is CCuNS. In a article，once mentioned of COA of Formula: CCuNS

Exocyclic coordination chemistry of an O2S2- macrocycle with copper(i), mercury(ii) and palladium(ii) ions

The preparation and structures of the exocyclic coordination-based supramolecular complexes of a 14-membered dibenzo-O2S 2-macrocycle, L, with thiaphilic soft metal ions Cu(i), Hg(ii) and Pd(ii) are reported. The X-ray crystal structures of the eight complexes have been determined, and a range of the less common structural types, including mono- and multinuclear species with discrete and infinite forms were obtained. L reacts with copper(i) halides and afforded isostructural complexes of type [(Cu2X2)L]n (1: X = Cl, 2: X = Br) adopting a two-dimensional (2-D) polymeric structure linked by square-type Cu 2X2 clusters, while copper(i) iodide gave a yellow emissive complex {[(Cu4I4)L2]·2.5H 2O}n (3) whose crystal structure was not available. Treatment of L with copper(i) thiocyanate gave an infinite 2-D coordination network [CuLSCN]n (4) in which copper atoms are linked by SCN – forming a 1-D backbone, then further cross-linked by Lvia Cu-S bonds resulting in a grid-type layered structure. Reactions of L with HgX 2 (X = Br and I) resulted in the formation of an interesting “ivy-leaves” shaped complex [HgLBr2]n (5) with a syndiotactic arrangement and a single-stranded complex [(Hg2I 4)L]n (6), respectively, adopting an infinite 1-D structure. Unlike the copper(i) and mercury(ii) complexes with the infinite structures, reactions of L with Pd(NO3)2 gave a 1:1 (metal-to-ligand) dinitrato complex cis-[PdL(NO3)2] (7) and a 1:2 bis(macrocycle) complex cis-[PdL2](NO3) 2 (8) in a discrete form depending on the molar ratio of the reactants. A straightforward one-pot reaction of Pd(NO3)2 with two equivalents of L also resulted in the isolation of the bis(macrocycle) complex 8. The comparative NMR and ESI-mass studies for the palladium(ii) complexes were also carried out. The results are discussed in terms of the exo-coordination modes as well as the anion coordination.

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

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The quantification of thiosulfate and polythionates in gold leach solutions and on anion exchange resins

Analytical procedures based on ion chromatography utilising an anion exchange column and UV detection are described for the quantification of thiosulfate, polythionates and gold thiosulfate both in leach solutions and adsorbed on anion exchange resins. The analysis of resins involves a two step perchlorate strip, and since perchlorate is used as the chromatography eluent, the high background concentration in the sample has little effect on the retention. Results are reported for the analysis of gold thiosulfate leach solutions and it is shown that tetrathionate and pentathionate are the dominant reaction products from thiosulfate oxidation at pH 8.5 and 9, whilst trithionate and sulfate are formed at pH 10.4. An increase in thiosulfate consumption when increasing pH from 8.5 to 9 is attributed to the increase in the rate of copper(I) oxidation with increasing ammonia concentration. However, the rate of thiosulfate consumption is higher at pH 9.0 than pH 10.4, and this is explained in terms of the differing reaction products. The adsorption of thiosulfate, polythionates and gold thiosulfate onto anion exchange resins is also discussed with reference to the quantification of the equilibrium solution and resin concentration of each species. Isotherms for gold on resin vs. gold in solution are reported for solutions of various polythionate concentrations.

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

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Synthesis of perfluoroalkyl thioethers from aromatic thiocyanates by iron-catalysed decarboxylative perfluoroalkylation

Easily available aryl and heteroaryl thiocyanates were converted into the corresponding perfluoroalkyl thioethers via decarboxylation of potassium perfluoroalkylcarboxylates, catalysed by the inexpensive and environmentally benign iron(III) chloride.

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

Application of 1111-67-7, Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 1111-67-7, molcular formula is CCuNS, introducing its new discovery.

11% efficiency solid-state dye-sensitized solar cells with copper(II/I) hole transport materials

Solid-state dye-sensitized solar cells currently suffer from issues such as inadequate nano-pore filling, low conductivity and crystallization of hole-transport materials infiltrated in the mesoscopic TiO2 scaffolds, leading to low performances. Here we report a record 11% stable solid-state dye-sensitized solar cell under standard air mass 1.5 global using a hole-transport material composed of a blend of [Cu (4,4?,6,6?-tetramethyl-2,2?-bipyridine)2](bis(trifluoromethylsulfonyl)imide)2 and [Cu (4,4?,6,6?-tetramethyl-2,2?-bipyridine)2](bis(trifluoromethylsulfonyl)imide). The amorphous Cu(II/I) conductors that conduct holes by rapid hopping infiltrated in a 6.5 mm-thick mesoscopic TiO2 scaffold are crucial for achieving such high efficiency. Using time-resolved laser photolysis, we determine the time constants for electron injection from the photoexcited sensitizers Y123 into the TiO2 and regeneration of the Y123 by Cu(I) to be 25 ps and 3.2 ms, respectively. Our work will foster the development of low-cost solid-state photovoltaic based on transition metal complexes as hole conductors.

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 1111-67-7, name is Cuprous thiocyanate, introducing its new discovery. Recommanded Product: 1111-67-7

Delayed Annealing Treatment for High-Quality CuSCN: Exploring Its Impact on Bifacial Semitransparent n-i-p Planar Perovskite Solar Cells

Inorganic p-type copper(I) thiocyanate (CuSCN) hole-transporting material (HTM) belongs to a promising class of compounds integral for the future commercialization of perovskite solar cells (PSCs). However, deposition of high-quality CuSCN films is a challenge for fabricating n-i-p planar PSCs. Here we demonstrate pinhole-free and ultrasmooth CuSCN films with high crystallinities and uniform coverage via delayed annealing treatment at 100 C, which can effectively optimize the interfacial contact between the perovskite absorber and the electrode for efficient charge transport. A satisfactory efficiency of 13.31% is achieved from CuSCN-based n-i-p planar PSC. In addition, due to the superior transparency of p-type CuSCN HTMs, it is also possible to prepare bifacial semitransparent n-i-p planar PSCs, which eventually permits a maximum efficiency of 12.47% and 8.74% for the front and rear illumination, respectively. The low-temperature process developed in this work is also beneficial for those applications such as flexible and tandem solar cells on heat-sensitive substrates.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 1111-67-7

Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

Reference of 1111-67-7, Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 1111-67-7, molcular formula is CCuNS, introducing its new discovery.

Cis -1,2-Bis(diphenylphosphino)ethylene copper(i) catalyzed C-H activation and carboxylation of terminal alkynes

The reaction of cis-1,2-bis(diphenylphosphino)ethylene (dppet) with CuX (X = CN, SCN) in 1:1 M molar ratio in DCM-MeOH (50:50 V/V) under refluxing conditions gave two dimeric Cu(i) complexes, viz. [Cu2(mu-CN)2(kappa2-P,P-dppet)2] (1) and [Cu2(mu2-SCN)2(kappa2-P,P-dppet)2] (2). These complexes have been characterized by elemental analyses, IR, 1H and 31P NMR, and electronic absorption spectroscopies, and ESI-MS. The molecular structure of 2 was confirmed by single crystal X-ray diffraction, which indicated that 2 exists as a centrosymmetric dimer in which the two copper centers are bonded to two dppet ligands and two bridging thiocyanate groups in a mu2-manner. The electrochemical properties of 1 and 2 were studied by cyclic voltammetry. Both the complexes exhibited strong luminescence properties in the solution state at ambient temperature. Both the complexes were found to be efficient catalysts for the conversion of terminal alkynes into propiolic acids with CO2. Owing to their excellent catalytic activity, the reactions proceed at atmospheric pressure and ambient temperature (25 C). The catalytic products were obtained in excellent yields (90-97%) by using the complex loading of 1 mol%.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. Reference of 1111-67-7, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 1111-67-7, in my other articles.

Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 1111-67-7, name is Cuprous thiocyanate, introducing its new discovery. category: copper-catalyst

Copper-Mediated [(Diethylphosphono)difluoromethyl]thiolation of alpha-Bromo Ketones

We report herein a straightforward access to alpha-[(diethoxyphosphoryl)difluoromethyl]thiolated ketones. The methodology, which involves the nucleophilic [Cu]CF2PO(OEt)2 species, has allowed the formation of the targeted compounds in moderate to high yields by using a simple procedure. This method represents a convenient alternative to the known approaches for the introduction of this emergent fluorinated motif.

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

Synthetic Route of 1111-67-7, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.1111-67-7, Name is Cuprous thiocyanate, molecular formula is CCuNS. In a article，once mentioned of 1111-67-7

Syntheses, structures and vibrational spectroscopy of some unusual silver(I) (pseudo-) halide/unidentate nitrogen base polymers

The meagre (structurally defined) array of 1:2 silver(I) (pseudo-)halide:unidentate nitrogen base adducts is augmented by the single-crystal X-ray structural characterization of the 1:2 silver(I) thiocyanate:piperidine (‘pip’) adduct. It is of the one-dimensional ‘castellated polymer’ type previously recorded for the chloride: ?Ag(pip) 2(mu-SCN)Ag(pip)2? a single bridging atom (S) linking successive silver atoms. By contrast, in its copper(I) counterpart, also a one-dimensional polymer, the thiocyanate bridges as end-bound SN-ambidentate: ?CuSCNCuSCN? A study of the 1:1 silver(I) bromide:quinoline (‘quin’) adduct is recorded, as the 0.25 quin solvate, isomorphous with its previous reported ‘saddle polymer’ chloride counterpart. Recrystallization of 1:1 silver(I) iodide:tris(2,4,6-trimethoxyphenyl)phosphine (‘tmpp’) mixtures from py and quinoline (‘quin’)/acetonitrile solutions has yielded crystalline materials which have also been characterized by X-ray studies. In both cases the products are salts, the cation in each being the linearly coordinated silver(I) species [Ag(tmpp)2]+, while the anions are, respectively, the discrete [Ag5I7(py)2]2- species, based on the already known but unsolvated [Cu5I 7]2- discrete, and the [Ag5I7] (?|?)2- polymeric, arrays, and polymeric [Ag5I6(quin)](?|?)-. The detailed stereochemistry of the [Ag(tmpp)2]+ cation is a remarkably constant feature of all structures, as is its tendency to close-pack in sheets normal to their P-Ag-P axes. The far-IR spectra of the above species and of several related complexes have been recorded and assigned. The vibrational modes of the single stranded polymeric AgX chains in [XAg(pip) 2](?|?) (X = Cl, SCN) are discussed, and the assignments nu(AgX) = 155, 190 cm-1 (X = Cl) and 208 cm -1 (X = SCN) are made. The nu(AgX) and nu(AgN) modes in the cubane tetramers [XAg(pip)]4 (X = Br, I) are assigned and discussed in relation to the assignments for the polymeric AgX:pip (1:2) complexes, and those for the polymeric [XAg(quin)](?|?) (X = Cl, Br) compounds. The far-IR spectra of [Ag(tmpp)2]2[Ag 5I7(py)2] and its corresponding 2-methylpyridine complex show a single strong band at about 420 cm-1 which is assigned to the coordinated tmpp ligand in [Ag(tmpp)2] +, and a partially resolved triplet at about 90, 110 and 140 cm -1 which is assigned to the nu(AgI) modes of the [Ag 5I7L2]2- anion. An analysis of this pattern is given using a model which has been used previously to account for unexpectedly simple nu(CuI) spectra for oligomeric iodocuprate(I) species.

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”