Tag: M.W:100-200

A new application about Cuprous thiocyanate

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The properties recently reported on the Cu(I)-iodide pyrimidine nonporous 1D-coordination polymer [CuI(ANP)]n (ANP = 2-amino-5-nitropyridine) showing reversible physically and chemically driven electrical response have prompted us to carry a comparative study with the series of [CuX(ANP)]n (X = Cl (1), X = Br (2), X = CN (4), and X = SCN (5)) in order to understand the potential influence of the halide and pseudohalide bridging ligands on the physical properties and their electrical response to vapors of these materials. The structural characterization of the series shows a common feature, the presence of -X-Cu(ANP)-X- (X = Cl, Br, I, SCN) double chain structure. Complex [Cu(ANP)(CN)]n (4) presents a helical single chain. Additionally, the chains show supramolecular interlinked interactions via hydrogen bonding giving rise to the formation of extended networks. Their luminescent and electrical properties have been studied. The results obtained have been correlated with structural changes. Furthermore, the experimental and theoretical results have been compared using the density functional theory (DFT). The electrical response of the materials has been evaluated in the presence of vapors of diethyl ether, dimethyl methylphosphonate (DMMP), CH2Cl2, HAcO, MeOH, and EtOH, to build up simple prototype devices for gas detectors. Selectivity toward gases consisting of molecules with H-bonding donor or acceptor groups is clearly observed. This selective molecular recognition is likely due to the 2-amino-5-nitropyridine terminal ligand.

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

 

Our Top Choice Compound: 1111-67-7

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Chemistry graduates have much scope to use their knowledge in a range of research sectors, including roles within chemical engineering, chemical and related industries, healthcare and more. Product Details of 1111-67-7. Introducing a new discovery about 1111-67-7, Name is Cuprous thiocyanate, The appropriate choice of redox mediator can avoid electrode passivation and overpotential, which strongly inhibit the efficient activation of substrates in electrolysis.

The addition of a solution of excess K(SCN) to an aqueous solution containing Cu(NO3)2·6H2O and 1,3-bis(amino)-2-propanol (bdapH) yields a novel 2D mixed CuI-Cu II complex; X-ray diffraction and magnetic studies are reported herein. The Royal Society of Chemistry 2006.

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

 

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Diazoacetates in coupling reactions: CuI serves as an effective catalyst for coupling terminal alkynes with diazo compounds to generate 3-alkynoates (see scheme). This method is efficient (1:1 ratio of reactants), mild (room temperature), and simple (no additional ligand), and a range of functional groups are tolerated (e.g., C-C double bonds, heteroatoms, and hydroxy groups).

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

 

Archives for Chemistry Experiments of 1111-67-7

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Chemistry graduates have much scope to use their knowledge in a range of research sectors, including roles within chemical engineering, chemical and related industries, healthcare and more. Synthetic Route of 1111-67-7. Introducing a new discovery about 1111-67-7, Name is Cuprous thiocyanate, The appropriate choice of redox mediator can avoid electrode passivation and overpotential, which strongly inhibit the efficient activation of substrates in electrolysis.

Co-ordination compounds of the new ligand 1,8-bis(3,5-dimethyl-1-pyrazolyl)-3,6-dithiaoctane (bddo) with MCl2 (M = Fe, Mn, Ni, Co, Zn, Cu, or Cd), MBr2 (M = Mn, Co, Ni, or Zn), Cu(BF4)2, and CuX (X = BF4, NCS, Cl, Br, or I) are described.The general formula for the divalent metal is and for copper(I), .With CuCl2 two modifications were obtained.The green modification of crystallises in space group P21/n with a = 9,019(2), b = 28,671(5), c = 8,431(2) Angstroem, beta = 113,65(2) deg, R = 0,055, and R’= 0,066 for 1578 unique reflections 2?(I)>.The compound consists of Cu(bddo)Cl2 units.The copper atom is co-ordinated by two pyrazole nitrogens and two chloride atoms, in trans positions, in a distorted square-planar geometry.The red modification of crystallises in space group Pbcn with a = 9,397(4), b = 15,093(4), c = 15,142(4) Angstroem, Z = 4, R = 0,069, and R’= 0,089 for 864 unique reflections ?(I)>.This compound consists of CuCl2 units linked together by ligand molecules, thus forming chains with distinct C2 symmetry perpendicular to the chain axis.The copper atom is co-ordinated in a distorted-tetrahedral geometry by two pyrazole nitrogens and two chloride atoms in cis positions.The sulphur atoms do not participate in the co-ordination, although molecular-mechanics calculations show that the ligand bddo is not sterically hindered to form tetradentate mononuclear chelates, i.e. with a MN2S2 chromophore.The structures of the other divalent metal halides were established as being very similar to that of the red modification.For semi-co-ordination of one or both tetrafluoroborates is indicated by the i.r. spectrum.Solid state 13C n.m.r. spectra of the copper(I) compounds indicate that the S atoms show significant shifts, suggesting co-ordination.In the thiocyanate and iodide compounds both thioether sulphurs co-ordinate in an identical manner, whereas in the chloride and bromide compounds they co-ordinate in a different manner.

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

 

The Absolute Best Science Experiment for Copper(I) oxide

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Reactions catalyzed within inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage and in condensed media. We’ll be discussing some of the latest developments in chemical about CAS: Related Products of 1317-39-1, Name is Copper(I) oxide, belongs to copper-catalyst compound, is a common compound. Related Products of 1317-39-1In an article, authors is , once mentioned the new application about Related Products of 1317-39-1.

The invention concerns oxime derivatives of the formula I STR1 wherein R4 is hydrogen, (1-4C)alkyl, halogeno-(2-4C)alkyl, hydroxy-(2-4C)alkyl, cyano-(1-4C)alkyl, phenyl or phenyl-(1-4C)alkyl; R5 is hydrogen, (1-4C)alkyl, halogeno-(2-4C)alkyl, hydroxy-(2-4C)alkyl, cyano-(1-4C)alkyl, phenyl or phenyl-(1-4C)alkyl, or a heteroaryl moiety selected from pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, furyl, thienyl, oxazolyl and thiazolyl; A4 is (1-4C)alkylene; Ar1 is phenylene, pyridinediyl or pyrimidinediyl; A1 is a direct link to X1 or A1 is (1-4C)alkylene; X1 is oxy, thio, sulphinyl or sulphonyl; Ar2 is phenylene, pyridinediyl, pyrimidinediyl, thiophenediyl, furandiyl or thiazolediyl; R1 is hydrogen, (1-4C)alkyl, (3-C)alkenyl or (3-4C)alkynyl; and R2 and R3 together form a group of the formula –A2 –X2 –A3 — wherein each of A2 and A3 is independently (1-3C)alkylene and X2 is oxy, thio, sulphinyl, sulphonyl or imino; or a pharmaceutically-acceptable salt thereof; processes for their manufacture; pharmaceutical compositions containing them and their use as 5-lipoxygenase inhibitors.

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

 

What Kind of Chemistry Facts Are We Going to Learn About Cuprous thiocyanate

We’ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, the role of 1111-67-7, and how the biochemistry of the body works.Synthetic Route of 1111-67-7

Reactions catalyzed within inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage and in condensed media. We’ll be discussing some of the latest developments in chemical about CAS: Synthetic Route of 1111-67-7, Name is Cuprous thiocyanate, belongs to copper-catalyst compound, is a common compound. Synthetic Route of 1111-67-7In an article, authors is Gholivand, Khodayar, once mentioned the new application about Synthetic Route of 1111-67-7.

Herein, we reported the synthesis of copper(i) thiocyanate complexes with ortho-pyridinyl carbohydrazones containing a thiophene (L1) or a furyl ring (L2) as a mixture of two different crystals for each compound, linkage isomers of C1N, [Cu(NCS)(L1)PPh3] and C1S, [Cu(SCN)(L1)PPh3], for L1, whereas monomeric and polymeric structures C2N, [Cu(NCS)(L2)PPh3], and C2P, [-(NCS)Cu(L2)-]n, for L2. Crystallographic information and theoretical calculations, mainly noncovalent interaction reduced density gradient (NCI-RDG) analyses, were pursued to generate a profound understanding of the structure-directing interactions in these complexes. The supramolecular assemblies are first driven by cooperative pi?pi interactions and hydrogen bonds followed by CH?pi, S?S and S?pi linkages. In the case of the linkage isomers, intermolecular interactions may have a significant role in the formation of the less stable S-bound isomer C1S.

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

 

The important role of Cuprous thiocyanate

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Two coordination polymers of [CuSCN(INH)] n (1) and [CuCl(INH)] n (2) have been synthesized (where INH = isoniazid). Their crystal structures have been determined by X-ray single crystal diffraction and both of them belong to monoclinic system. The Cu(I) ions in 1 and 2 all adopt distorted tetrahedral geometries. The complex 1 belongs to Cc space group and the cell parameters are: a = 44.370(2) A, b = 3.811(3) A, c = 30.2800(19) A, beta = 132.87(3) and Z = 4. The Cu(I) ion in 1 is coordinated to three SCN groups and one INH ligand and such coordination model result in a 2D networks construction. Complex 2 crystallizes in the P21/c space group and the cell parameters are: a = 7.0319(13) A, b = 18.367(3) A, c = 6.0644(11) A, beta = 93.466(2) and Z = 4. Each copper atom in 2 is ligated by two INH ligands and two chlorine groups. Two copper atoms are asymmetrically bridged by two chlorine ligands to form a Cu2Cl 2 unit. Each Cu2Cl2 fragment is bridged by four INH groups to form a 2D layer structure.

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

 

You Should Know Something about Cu2O

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Chemical engineers ensure the efficiency and safety of chemical processes, adapt the chemical make-up of products to meet environmental or economic needs, and apply new technologies to improve existing processes. Synthetic Route of 1317-39-1. Introducing a new discovery about 1317-39-1, Name is Copper(I) oxide

Compounds of formula (I): (in which R1-R7 are hydrogen or various organic groups, n is 1-10, Ar is an aromatic group, U is CH2 or a carbon atom doubly bonded to either one of its adjacent carbons, and W is >CH2, >C=0 , >CHOH, >C=NOH or various derivatives thereof) have the ability to lower the levels of blood lipid peroxides and blood sugars and to inhibit the activity of aldose reductase; they may be used therapeutically for these purposes.

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

 

Awesome Chemistry Experiments For 1111-67-7

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The regiospecific functionalization of the base moiety of purine nucleosides through copper-mediated nucleophilic reactions is described.

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

 

You Should Know Something about Cuprous thiocyanate

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

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Cuprous oxide (Cu2O) nanowire films were in situ grown from pre-deposited cuprous thiocyanate (CuSCN) films which acted as sacrificial precursors. The synthesis was processed in air from NaOH solution, providing an appealing alternative to nanowire-based porous films. Plausible solid-liquid interface reactions were described. Structural analysis showed that Cu 2O nanowires were p-type polycrystalline semiconductor, with high aspect ratio of 10-30 nm in diameter and more than 1 um in length, and they were found to be interlaced with each other in the formation of interpenetrating networks within the Cu2O film which possessed large-area uniformity. It is noteworthy that the nanowire-based films actually are porous films embedded with various interwire spaces and cavities. Photoelectrochemical measurements revealed that a Cu2O film with thickness of 500-1000 nm generated zero-bias photocurrent of approximately 1.5 muA cm-2. The present synthesis is facile and low-cost, and is expected to be suitable for mass production of large-area semiconductor films under ambient condition.

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