297results about "Cobalt organic compounds" patented technology

The present invention relates to: an electrochemical biosensor capable of effectively and sensitively detecting alfuzosin; an electrode applied thereto; a metal-organic framework (MOF) which includes a zinc / cobalt oxide and is applied in manufacturing the electrode; and methods for manufacturing same.

The present invention provides an amidinate compound represented by the following general formula (1) or a dimer compound thereof, and a method of producing a thin-film including using the compound as a raw material:where R1 and R2 each independently represent an alkyl group having 1 to 5 carbon atoms, R3 represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, M represents a metal atom or a silicon atom, and “n” represents the valence of the atom represented by M, provided that at least one hydrogen atom of R1 to R3 is substituted with a fluorine atom.

Mixed metal metal-organic frameworks (MM-MOFs) of copper-1,3,5-benzenetricarboxylate (BTC), M-Cu-BTC, wherein M is Zn(II), Ni(II), Co(II), and / or Fe(II) may be made using post-synthetic exchange (PSE) with metal ions. Such MM-MOFs may be used in H2 storage, especially Ni(II) and Co(II) MM-MOFs. Selected metal exchanged materials can provide gravimetric H2 uptake around 1.63 wt. % for Zn—Cu-BTC, around 1.61 wt. % for Ni—Cu-BTC, around 1.63 wt. % for Fe—Cu-BTC, and around 1.12 wt. % for Co—Cu-BTC.

The invention belongs to the field of fine chemical engineering, and particularly relates to an N-heterocyclic carbene complex catalyst and application of the N-heterocyclic carbene complex catalyst in pipelined continuous synthesis of a silane coupling agent. The invention provides an N-heterocyclic carbene complex catalyst, which comprises a ligand and an active component, the ligand is an N-heterocyclic carbene ligand, and the active component is a transition metal; the molar ratio of the N-heterocyclic carbene ligand to the transition metal is 1: 1. The invention also provides a method for pipelined continuous synthesis of the silane coupling agent, which comprises the following steps: carrying out homogeneous hydrosilylation reaction in a pipelined reactor by taking hydrogen-containing silane and unsaturated hydrocarbon as raw materials in the presence of an N-heterocyclic carbene complex catalyst to obtain the silane coupling agent. The spatial configuration and the electronic property of the N-heterocyclic carbene ligand precursor are designed and regulated, so that the N-heterocyclic carbene ligand precursor is matched with transition metal, and the N-heterocyclic carbene ligand precursor can be applied to hydrosilylation reaction.

The invention relates to the technical field of preparation of binuclear cobalt complexes, in particular to a binuclear cobalt complex as well as a preparation method and application thereof. The molecular formula of the binuclear cobalt complex is Co2 (L1) 2X2, the binuclear cobalt complex is composed of two L12-groups, two trivalent cobalt and two X-ions, and X is Cl or OH. The binuclear cobalt complex Co2 (L1) 2Cl2 belongs to a triclinic system, belongs to a P-1 space group, and is a chlorine-bridged binuclear cobalt complex. The binuclear cobalt complex Co2 (L1) 2 (OH) 2 belongs to a monoclinic system, belongs to a P21 / n space group, and is an oxyhydrogen bridging binuclear cobalt complex. The preparation method of the two binuclear cobalt complexes is simple, the cost is lower than that of precious metal, the stability and the selectivity are good, and the binuclear cobalt complexes have certain electrocatalytic oxygen reduction reaction performance.

An optical film includes: a transparent substrate; and a colored layer laminated on at least one side of the transparent substrate, the colored layer containing a dye (A), the dye (A) containing a colorant having a wavelength of maximum absorption in the range of 470 nm to 530 nm, the colorant containing a dipyrromethene cobalt complex having a structure represented by formula (I), in which R1 to R7 are combined such that a free energy change between before and after the reaction, calculated by applying R1 to R7 in the formula (I) to a predetermined reaction formula (II) using a quantum chemical calculation program Gaussian 16 with a calculation method B3LYP and a basis function 6-31G (d,p) (however, a basis function LanL2DZ is assigned to elements having an atomic number greater than that of Kr in the periodic table), is 0.92 kcal / mol or greater.

The invention discloses a phase transfer catalyst of metal ion complexing crown ether for efficiently preparing aquacide dichloride and application of the phase transfer catalyst. The catalyst is prepared by taking crown ethers as 18-crown-6 and dicyclohexyl-18-crown-6 ether and complex ions as lewis acid active components such as potassium ions, lithium ions, cobalt ions, copper ions and the like through a direct chemical method. The catalyst synergistically catalyzes a nucleophilic substitution reaction of a pyridine derivative and alkyl halide in an aprotic polar solvent such as acetonitrile or nitrobenzene, and synthesis of diquat dichloride can be realized under the conditions of 60-140 DEG C, normal pressure and no oxygen. The mass ratio of the pyridine derivative to the catalyst to the solvent in a reaction system is 1: (0.001-0.05): (5-8), and real-time monitoring and regulation are performed through an online infrared spectrum, a liquid chromatograph and a gas chromatograph-mass spectrometer. The purity of the product is more than 99% after the product is subjected to filtration, recrystallization with an ethanol-water mixed solvent and vacuum drying. The catalyst provided by the invention has the characteristics of high activity, strong stability and recoverability, obviously improves the atom economy of the reaction, simplifies the production process, reduces the energy consumption and pollution, and is suitable for large-scale industrial production.

The heat resistance of an organic semiconductor device including a step of forming an aluminum oxide film over and in contact with an organic semiconductor layer is improved. A heating step is performed after a layer containing an organometallic compound for a mask for an organic semiconductor layer, which is represented by General Formula (G1) below, is provided over the organic semiconductor layer.In General Formula (G1), Ar represents a substituted or unsubstituted aryl group having 6 to 30 carbon atoms or a substituted or unsubstituted heteroaryl group having 1 to 30 carbon atoms, X represents oxygen or sulfur, M represents a metal, n represents an integer greater than or equal to 1 and less than or equal to 5, and n is the same as the valence of the metal M. Note that when n is greater than or equal to 2, a plurality of Ars may be the same or different and Xs may be the same or different. When Ar represents the substituted or unsubstituted heteroaryl group having 1 to 30 carbon atoms, a heteroatom of the heteroaryl group may be coordinated to the metal M.

The invention discloses a Salen catalyst. The Salen catalyst has a structure as shown in a formula (I-1). The Salen catalyst is a multi-core catalyst, two or more mononuclear catalysts can be connected into the multi-core catalyst through groups containing amido bonds, the catalytic efficiency, the resolution yield, the recovery rate and the activity after recovery of the catalyst can be improved, and the recovered catalyst can be mixed with a fresh multi-core catalyst for use; and the method still has the advantages of high resolution yield and the like, and can be recycled for multiple times. Besides, when the multinuclear catalyst participates in the resolution reaction, excessive water is not needed, the reaction yield can be increased, the time for splitting the terminal epoxy compound can be shortened, the prepared product is high in purity and few in impurity, and the problems that the final product is difficult to purify and the like can be solved. # imgabs0 #

The invention discloses a pyridinedicarboxylic acid coordinated catalyst, a composite catalyst, a preparation method and application. The general formula of the catalyst is # imgabs0 # B; the catalyst is calcium ions, sodium ions, magnesium ions, lithium ions, potassium ions, ammonium ions, octadecyl dimethyl benzyl ammonium ions, octadecyl trimethyl ammonium ions, dodecyl dimethyl benzyl ammonium ions, dodecyl trimethyl ammonium ions, octyl tributyl phosphonium ions, tetrabutyl phosphonium ions, hexyl tributyl phosphonium ions and tributyl ethyl phosphonium ions; the ionic liquid is a tetrabutyl phosphonium ion, a tributyl hexyl phosphonium ion, a tetramethyl ammonium ion, a tetraethylammonium ion, a tetrabutyl ammonium ion, a benzyl trimethyl ammonium ion, a benzyl triphenyl phosphonium ion or a benzyl triethylammonium ion; m is Cr, Mo, V, W, Cu, Fe, Co, Ni or Zr; r is a C1-C10 alkyl group; x is an integer between 1 and 20; and y is an integer between 1 and 40, so that the p-nitrotoluene oxidation reaction selectivity and the p-nitrotoluene conversion rate can be improved.

The application discloses an energetic material, a preparation method thereof and application of the energetic material as explosives and self-ignition propellants. I C 12 H 12 N 10 or M Ⅱ C8H6N8; wherein, M I is selected from Co, Ni and Cu; M Ⅱ is selected from Zn. The energetic material is convenient to synthesize, has good thermal stability, excellent mechanical sensitivity, excellent propelling performance and specific impulse, has a significant energy density advantage, can effectively solve the problem of continuous evaporation of hydrazine propellants during storage, avoid the risk of internal pressure increase of a fuel tank, and overcome the problems of liquid fuel in the storage and transportation process. Therefore, the innovative high-performance energetic material has excellent performance and wide application potential, and has great commercial value in the fields of aviation, aerospace and military.

The invention discloses a continuous synthesis method of a cobalt-based alkyne precursor based on micro-reaction reinforcement, which belongs to the technical field of advanced electronic material preparation, and comprises the following steps: pre-cooling an n-hexane solution of Co2 (CO) 8 to-30 DEG C; the method comprises the following steps: introducing an n-hexane solution of Co2 (CO) 8 and 3, 3-dimethyl-1-butyne into a stacked microreactor array under the protection of nitrogen to react, and collecting a product after the reaction is completed. According to the present invention, the micro-channel reaction system containing the passivation layer is constructed, the substitution reaction process is precisely regulated and controlled, and the in-situ detection technology is combined so as to achieve the directional synthesis and collection of the specific coordination structure; the obtained product has excellent thermal stability and vapor pressure characteristics, and can meet the requirements of advanced semiconductor device manufacturing on precursor materials.

The purpose of the present invention is to provide a method for more efficiently producing specific optically active compounds including optically active 1-acetyl-2,2,4-trimethyl-1,2,3,4-tetrahydroquinoline.　The present invention provides a method for producing an optically active compound represented by formula (3) (wherein R5 represents a hydrogen atom, etc., R6 and R7 each independently represent a hydrogen atom, etc., R8 represents a C1-C6 alkyl group, R9, R10, and R11 each independently represent a hydrogen atom, etc., and the asterisked carbon atom is an asymmetric carbon atom), the method comprising reacting a compound represented by formula (2) (wherein R5, R6, R7, R8, R9, R10, and R11 respectively have the same meanings as defined above) with hydrogen in the presence of an asymmetric cobalt complex.

The invention belongs to the field of polymer chemistry, and relates to a metal complex, a catalytic system and application thereof, and polypropylene carbonate and a preparation method thereof. The structure of the metal complex is as shown in formula (I): # imgabs0 #, wherein M is a trivalent metal ion; y is a monovalent acid radical ion; r1 is a substituted or unsubstituted cycloalkylene group or arylene group of C5-C12; r2 is H or alkyl of C1-C6; and R3 is an alkylene group of C1 to C10. Compared with the prior art, the method has the following advantages that the Salen metal complex with a novel phenothiazine structure is adopted as a main catalyst to efficiently catalyze copolymerization of carbon dioxide and epoxide to prepare the polypropylene carbonate, and the obtained polypropylene carbonate has the characteristics of high molecular weight and narrow molecular weight distribution.

This invention provides a polynuclear metal cluster based on salicylaldehyde acetal-2-thiophenol ligand, its preparation method, and its application. The chemical formula of the polynuclear metal cluster is Co4(C 13 H9NOS)6·2CH3CN·CH3OH, where C 13 H9NOS is salicylaldehyde acetal-2-thiophenol, with Co forming a six-coordinate octahedral configuration with N, O, and S. The salicylaldehyde acetal-2-thiophenol ligand in the polynuclear metal cluster of this invention can effectively stabilize the active center of metallic cobalt, resulting in a polynuclear metal cluster with significant OER activity and broad prospects for practical applications.

Provided is an antibacterial and flame-retardant ultra-thin fiberboard and its preparation method, which can obtain good antibacterial and flame-retardant properties and adapt to the high-temperature hot pressing of ultra-thin fiberboard without affecting the curing process of the adhesive. The preparation method includes: adding NP-S-P solution to the urea-formaldehyde resin adhesive, fully stirring and then adding an aqueous NaOH solution to adjust the pH value to obtain antibacterial and flame-retardant adhesive 1; continuing to add modified porphyrin-type cobalt antibacterial agent N-Co to antibacterial and flame-retardant adhesive 1 and blending evenly to obtain antibacterial and flame-retardant adhesive 2; blending wood fibers and antibacterial and flame-retardant adhesive 2 evenly in a glue mixer, and drying the wood fibers after gluing to obtain a paving material with a moisture content of 6.0-6.5%; paving the paving material into a continuous slab belt, setting the target board thickness to 1.2 mm, and the fiberboard density to 800 Kg / m 3 , and sending the slab belt to a hot press for hot pressing.

The application discloses a kind of post-transition metal complexes and preparation method and application thereof, and the post-transition metal complex provided by the application can be applied to the polymerization of ethylene as catalyst, and the molecular weight of polymer is regulated by changing ligand structure and polymerization condition;Especially by changing its metal center, the molecular weight distribution of polyethylene has obvious regulating effect, wherein the polyethylene obtained by iron complex catalysis has relatively wide molecular weight distribution (M w / M n :2.0-10.7), and the molecular weight of polyethylene obtained by cobalt complex catalysis is mostly narrow (M w / M n :1.6-2.2), and both can be used to prepare highly linear polyethylene.The preparation method of the complex described in the application has the advantages of mild conditions, short cycle, simple operation, etc.The complex prepared by the method shows high catalytic activity, which can be up to 2.56×10 7 g (PE) (mol Fe) ‑1 h ‑1 , and high thermal stability, which meets the operating temperature of industrial production and has further industrial application prospect.

The application discloses a Salen catalyst which has a structure shown in formula (I-1). The Salen catalyst is a polynuclear catalyst, two or more mononuclear catalysts can be connected into the polynuclear catalyst through a group containing an amide bond, the catalytic efficiency, the resolution yield, the recovery rate and the activity after recovery of the catalyst can be improved, the polynuclear catalyst after recovery can be mixed with a fresh polynuclear catalyst for use, and the resolution yield is high, and the polynuclear catalyst can be recycled and reused for multiple times. In addition, when the polynuclear catalyst participates in a resolution reaction, an excessive amount of water is not needed, the reaction yield can be improved, the time for resolving an end epoxy compound can be shortened, the prepared product has high purity and few impurities, and the problem of difficult purification of a final product can be solved.

A method for producing a metal-organic framework, a metal-organic framework produced therefrom, and a solid-state battery anode comprising the metal-organic framework are provided. The method comprises preparing a precursor solution by introducing a basic additive into a mixed solution containing a co-precursor and an organic ligand (S1), introducing a nickel precursor into the precursor solution and obtaining a precipitate (S2), and obtaining the metal-organic framework by purifying and drying the precipitate (S3).

The invention discloses a face-to-face binuclear cobalt complex and a preparation method and application thereof, and belongs to the technical field of organic synthesis and catalysis, the face-to-face binuclear cobalt complex is a crystal material A or a crystal material B, the chemical formula of the crystal material A is C68H68Co2N4O6, and the chemical formula of the crystal material B is C54H76Co2N6O6; the face-to-face dual-core cobalt complex comprises a crystal material A and a crystal material B. The center distance between two metal cobalt of the crystal material A is 4.821, a ligand is connected with the two metal centers in a bridging mode to form a large cavity, the dual-metal cobalt complex is formed, the two metal cobalt are subjected to synergistic activation at + 2 valence, and the dual-metal cobalt complex is formed. And hydroxyl radicals can be generated through homolysis. Wherein the ligand of the crystal material B is connected with two metal cobalt centers in a carbon chain bridging mode, the coordination environment of each metal cobalt center is in an octahedral configuration, the distance between the two metal centers is 5.720, the two metal centers are in + 3 valence at the same time, and the binuclear cobalt complex is formed.

The invention discloses a transition metal catalyst based on a terpyridine ligand, a preparation method and application thereof, and particularly relates to application of the transition metal catalyst in the field of catalyzing copolymerization of olefin and polar monomers, the structural formula of the metal catalyst is shown in the specification, and R1 is selected from any one of a hydrogen atom electron-donating group or a fluorine atom electron-withdrawing group; and R2 is selected from a hydrogen atom electron-donating group. According to the scheme, terpyridyl with excellent coordination capability is used as a ligand to prepare the transition metal catalyst, and the electronic effect of the ligand is regulated and controlled, so that the catalytic performance of the catalyst is optimized, and favorable regulation and control on the catalytic activity, the relative molecular mass and distribution of a polymer, the copolymerization performance and the like are realized.

The present application relates to the technical fields of catalyst design and ammonia synthesis, and discloses a preparation method of a pyrazole trinuclear cobalt-based catalyst, which comprises the following steps: step 1, dissolving a metal cobalt compound in water to obtain a first mixed solution, dissolving a pyridine molecule in a mixed organic solution to obtain a second mixed solution, mixing and stirring the first mixed solution and the second mixed solution, and then transferring the mixture to a high-vacuum reaction tube, and then placing the high-vacuum reaction tube in an oil bath to perform a solvothermal reaction; step 2, after the solvothermal reaction is completed, washing, centrifuging and drying the obtained substance to obtain a trinuclear cobalt-based compound powder. The present application uses nitrate as a nitrogen source, a pyrazole cobalt-based compound as a catalyst, and a mixture of potassium sulfate and potassium nitrate as an electrolyte, and effectively synthesizes ammonia through electrochemical reduction. The catalyst exhibits high Faraday efficiency and high yield under high-concentration nitrate conditions.

The invention discloses a silylene ligand supported metal cobalt catalyst and a preparation method and application thereof, and belongs to the technical field of metal organic catalyst.The preparation method comprises the steps that indole and n-butyllithium serve as raw materials and are subjected to a deprotonation reaction in a tetrahydrofuran solvent at the room temperature, 2-lithium indole is obtained, a tetrahydrofuran solution of chlorosilylene is added at the low temperature, and the 2-lithium indole is obtained; and carrying out nucleophilic substitution reaction at room temperature, and substituting Li in 2-lithium indole with silicon in chlorosilylene to obtain the silylene ligand. The preparation method comprises the following steps: taking a silylene ligand and a cobalt complex as raw materials, carrying out ligand substitution reaction at room temperature in a tetrahydrofuran solvent, and substituting a ligand in the cobalt complex with the silylene ligand to obtain the metal cobalt catalyst supported by the silylene ligand. The prepared metal cobalt catalyst supported by the silylene ligand is used for catalyzing olefin hydrosilylation reaction, ultrahigh catalytic activity is shown, complete conversion of olefin is achieved, Markov products are obtained with excellent selectivity, and therefore the problems of cost and product selectivity in industrial production are solved.

The present invention relates to an organocobalt compound, a catalyst composition comprising same, and an olefin-based polymer prepared using same.

The present invention relates to the use of transition metal-carbene complexes in organic light-emitting diodes (OLEDs), to a light-emitting layer, to a blocking layer for electrons or excitons, or to a blocking layer for holes, each comprising these transition metal-carbene complexes, to OLEDs comprising these transition metal-carbene complexes, to devices which comprise an inventive OLED, and to transition metal-carbene complexes.

The present invention provides: an alkoxide compound represented by general formula (1); a thin film-forming material containing said compound; and a method for manufacturing a thin film. (In the formula, R1 and R2 each independently represent a hydrogen atom, an alkyl group having 1-5 carbon atoms, or a fluorine atom-containing alkyl group having 1-5 carbon atoms, R3 and R4 each independently represent an alkyl group having 1-5 carbon atoms or a fluorine atom-containing alkyl group having 1-5 carbon atoms, R5 represents a hydrogen atom, a group containing a fluorine atom, or an alkyl group having 1-5 carbon atoms, R6 represents a group containing a fluorine atom, M represents a metal atom or a semimetal atom, and n represents the valence of an atom represented by M. However, if M is a copper atom, R3 and R4 each independently represent an alkyl group having 1-2 carbon atoms, and R5 represents a hydrogen atom.)

The invention belongs to the technical field of transition complex preparation, and discloses a five-core cobalt molecule-based magnet as well as a preparation method and application thereof. The preparation method provided by the invention comprises the following steps: mixing and dissolving organic ligands H2L, Dy (CF3SO3) 3, CoI2 and NaN3 in a mixed solution of methanol and deionized water according to a certain proportion, then adding Et3N, reacting the mixed solution in a reaction kettle with a polytetrafluoroethylene liner for 10 hours at the reaction temperature of 80 DEG C, and obtaining purple crystals after the reaction is completed. The five-core cobalt complex is an ionic molecule-based magnet and can be applied to preparation of molecular magnetic materials and molecular memory materials.

The invention provides a bidentate cobalt complex containing an imidazo [1, 2-alpha] pyridine group as well as a preparation method and application of the bidentate cobalt complex, and belongs to the technical field of organic chemical synthesis. The structural formula of the bidentate cobalt complex is shown in the specification, and the preparation method comprises the following steps: carrying out bromination reaction and cyclization reaction on 2-methoxy-6-acetylpyridine to obtain a bidentate ligand with methoxy and imidazo [1, 2-alpha] pyridyl, and carrying out demethylation reaction on the ligand to obtain another bidentate cobalt complex with hydroxyl and imidazo [1, 2-alpha] pyridyl. The imidazo [1, 2-alpha] pyridyl-containing bidentate cobalt complexes are prepared from imidazo [1, 2-alpha] pyridyl-containing bidentate ligands, and the two ligands react with anhydrous cobalt chloride respectively to obtain various imidazo [1, 2-alpha] pyridyl-containing bidentate cobalt complexes. The electron effect of the complex is adjusted by changing substituent groups on imidazo [1, 2-a] pyridine groups, then the activity of the complex in catalytic reaction is adjusted, and the complex can be further applied to hydrosilylation reaction of styrene and has very important application prospects.

The invention discloses an energetic material, a preparation method thereof and application of the energetic material as an initiating explosive, an explosive and a pyrotechnic compound. The chemical formula of the energetic material is MC10H18B2N6; wherein M is selected from at least one of Mn, Fe, Co, Ni, Cu, Zn and Cd; the crystal structure of the energetic material belongs to a monoclinic system, and the space group is P21 / n. The obtained energetic material has excellent stability and safety, and is green and environment-friendly. Through experimental determination, the thermal stability is greater than or equal to 120 DEG C, the impact sensitivity is greater than or equal to 40J, and the friction sensitivity is greater than or equal to 240N. Compared with an existing commercial propellant (unsymmetrical dimethylhydrazine), the ignition delay time of the energetic material is equivalent, the defects that fuel and an oxidizing agent are seriously mixed and the combustion efficiency is low are overcome, and the energetic material has important commercial application value in the field of green high-performance energetic materials.

The present invention relates to air stable, binary Ni(0)-olefin complexes and their use in organic synthesis.