234results about "Nickel organic compounds" patented technology

The invention belongs to the technical field of preparation of transition metal organic photocatalysts, and particularly relates to design and a preparation method of a carbazole terpyridyl nickel catalyst. The invention aims to design and synthesize a carbazole terpyridyl nickel catalyst with light / nickel synergistic catalytic activity. The preparation method comprises the following specific synthesis steps: reacting different types of alpha-pyridone pyridinium and alpha, beta-unsaturated ketone in methanol, and carrying out suction filtration, washing, drying and other operations to obtain the corresponding carbazole terpyridyl ligand. The carbazole terpyridyl ligand and anhydrous nickel bromide are subjected to a heating reflux reaction in a tetrahydrofuran solution, and the corresponding carbazole terpyridyl nickel catalyst is obtained through methanol washing, suction filtration, drying and other operations. The terpyridyl nickel catalyst has high catalytic activity in a C-N, C-O and C-S coupling reaction promoted by visible light.

This invention relates to nickel catalysts with alkali ions for homopolymerization and copolymerization.

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 neutral phosphine phenol nickel catalyst based on a tert-butyl structure. The catalyst has a structure shown as a formula (I), wherein R1 and R2 are respectively and independently selected from hydrogen, C1-C20 alkyl, fluorine, chlorine, bromine, iodine, nitryl, hydroxyl, substituted silicon group and C1-C20 substituted alkyl; r3 is independently selected from C1-C20 alkyl, C1-C20 substituted alkyl, phenyl or substituted phenyl, R4 and R5 are independently selected from hydrogen, fluorine, chlorine, bromine, iodine, C1-C20 alkyl, aryl, an oxygen-containing group, a nitrogen-containing group, a sulfur-containing group, a boron-containing group, an aluminum-containing group, a phosphorus-containing group, a silicon-containing group or a tin-containing group; tert-butyl is introduced into para-position and meta-position of a ligand phenol oxygen ring, and a protection barrier is formed by utilizing the steric hindrance effect of the t-butyl, so that decomposition and deactivation of the catalyst under a high-temperature condition are inhibited, the catalyst can stably play a catalytic role in an industrial common medium-high-temperature polymerization environment, and the process adaptation range of the catalyst is widened.

The present invention relates to novel ligands of formula 1, wherein R1 is each substituted or unsubstituted alkyl, perfluoroalkyl, aryl or cycloalkyl; a cyano group; a sulfonyl-SO2-R10 wherein R10 = a C1-C5 alkyl group, a C5-C6 cycloalkyl group, a C5-C10 aryl group, each unsubstituted or substituted by a C1-C4 alkyl group or a C1-C4 perfluoroalkyl group; silyl-Si (R20R30R40), wherein R20, R30 and R40 are, independently of each other, a C1-C6 alkyl group or a C5-C10 aryl group, which are each unsubstituted or substituted by a C1-C4 alkyl group; r2 is each substituted or unsubstituted alkyl, cycloalkyl, adamantyl or aryl; r3, R4 and R5 are each alkyl, cycloalkyl or aryl, which may be unsubstituted or substituted; or at least two of R3, R4 and R5 are alkyl or alkyl ether bridges and form a heterocyclic ring together with the phosphorus atom, or wherein R3 and R6 and / or R4 and R7 and / or R5 and R8 form an alkyl or alkyl ether bridge together with the nitrogen atom to which it is attached form a heterocyclic ring; r6, R7 and R8 are alkyl or aryl, which may be unsubstituted or substituted, or form a heterocyclic ring, alone or together, with R3, R4 or R5 and the nitrogen atom to which it is attached; m, n and o are 0 or 1, with the proviso that at least one of m, n and o is 1, metal complexes thereof and use for catalytic purposes. # imgabs0 #

The invention provides an alpha-diimine ligand compound, an alpha-diimine nickel catalyst and a preparation method and application of the alpha-diimine ligand compound and the alpha-diimine nickel catalyst, and belongs to the technical field of organic synthesis. Wherein R1 is selected from hydrogen, methoxyl or tertiary butyl; r2 is selected from methyl, ethyl or isopropyl; and R3 is selected from hydrogen or methyl. The alpha-diimine nickel catalyst prepared by adopting the alpha-diimine ligand compound can catalyze olefin to carry out homopolymerization reaction or copolymerization reaction, so that not only is excellent catalytic performance shown, but also a polyolefin material obtained by catalyzing olefin monomer homopolymerization reaction has excellent elastic recovery performance; and the catalyst has certain application potential in olefin polymerization industry.

The invention provides a transition metal nickel complex as well as a preparation method and application thereof. The transition metal nickel complex has a structure as shown in a formula (I), wherein R1, R2, R3, R4 and R5 are independently selected from the following groups substituted by one or more Ra: H, C1-6 alkyl, C1-6 alkoxy, C6-20 aryl or C6-20 heteroatom aryl. The complex provided by the invention has higher catalytic activity and stability in catalysis of olefin polymerization, especially for polymerization of ethylene, has very strong regulation and control performance on the molecular weight of polyethylene, and can be used for preparing highly branched polyethylene.

The present disclosure pertains to a method of sensing an analyte in a sample by: (1) exposing the sample to an electrode that includes a covalent-organic framework with a plurality of metal-coordinated aromatic units that are linked to one another by aromatic linkers; (2) detecting a change in a property of the electrode; and (3) correlating the change in the property to the presence or absence of the analyte. The present disclosure also pertains to said covalent-organic framework and methods of making the covalent-organic frameworks.

The present invention provides a diimine ligand having a general structure shown in Formula L, wherein R1 to R8 are independently selected from H, C1-C6 alkyl, C1-C6 alkoxy, C6-C 12 Aryl or halogen. The diimine ligand is prepared by acid catalysis using a 1,2-diketone compound having an isatin skeleton and a bulky hindered aromatic amine having an aniline skeleton. The present invention also provides a late transition metal polyethylene wax catalyst using the diimine ligand coordinated with a late transition metal salt. The catalyst has high catalytic activity over a wide temperature range and excellent high-temperature stability. The catalyst is used in the preparation of polyethylene wax, and the product has characteristics such as a narrow molecular weight distribution, low branching, and good chemical and physical properties.

A metal-organic framework according to the present invention provides a metal-organic framework satisfying chemical formula 1. (Chemical formula 1) M+COO--(CH2)n- COO-M+ (M is a metal having a standard reduction potential of -0.8 V to 1.8 V, and n is an integer between 2 and 15.)

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 present invention relates to a method for the deuteration of organic compounds, particularly the deuteration of silanes (primary, secondary, and tertiary), as well as of the particular borane "pinacolborane", by reacting deuterium gas (D2) and said silanes and / or borane at certain deuteration reaction conditions in the presence of a deuteration reaction catalyst which is an organometallic complex comprising Ni (II) and an organic ligand comprising phosphorous and boron.

The invention provides a bidentate aza-matched nickel complex, a preparation method and a nickel metal catalyst for catalyzing olefin polymerization, the bidentate aza-matched nickel complex has a structure as shown in a formula (I), in the formula (I), R1 and R2 are the same or different, and are independently selected from substituted or unsubstituted C1-C10 alkyl, C1-C10 alkoxy, C2-C10 alkenyl or C6-C10 aryl, and R2 and R3 are the same or different and are independently selected from substituted or unsubstituted C1-C10 alkyl, C1-C10 alkoxy, C2-C10 alkenyl or C6-C10 aryl; r3 is selected from hydrogen, methyl, methoxyl and trifluoromethyl; x is selected from chlorine or bromine. According to the bidentate aza-nickel complex provided by the invention, the binding force between amido and nickel metal is stronger, and meanwhile, the imine is substituted by aryl, so that the nickel metal catalyst has a higher heat stabilizer, and is obviously superior to the traditional alpha-diimine nickel catalyst.

The invention relates to the technical field of catalysts, in particular to a neutral nickel catalyst as well as a ligand, a preparation method and application thereof, and the ligand has a structure as shown in a formula I. According to the invention, a series of novel neutral nickel complexes with sandwich-like structures are developed based on an amide-aryl ketone skeleton structure for the first time; the series of catalysts are simple and efficient to synthesize, the ligand synthesis yield is greater than or equal to 80%, and the catalyst synthesis yield is greater than or equal to 80%; nuclear magnetic resonance monitoring shows that the nickel catalyst provided by the invention has high stability in air and does not deteriorate within 72 hours; during polymerization, no extra cocatalyst needs to be added, and the catalyst shows extremely excellent thermal stability and capability of inhibiting chain transfer side reaction in a solution copolymerization process and can resist poisoning of acrylate monomers at the same time.

The application provides an alpha-diamino nickel complex for catalytically preparing polyethylene, realizes control of polymer molecular weight and branching degree by regulating N-aryl ortho groups in the alpha-diamino nickel complex molecules and polymerization conditions, and has the advantages of high catalytic activity, low cost, stable performance and the like. The prepared polyethylene has high molecular weight, narrow molecular weight distribution, high branching degree and excellent mechanical mechanical performance.

The present application relates to a kind of diimine ligand with the general structure shown in formula L, the post-transition metal catalyst prepared by its coordination and its preparation method and application, wherein R1-R6 are independently selected from H, C1-C6 alkyl, C1-C6 alkoxy, C6-C 12 Aryl or halogen. The present application constructs diimine post-transition metal catalyst with different chemical environment of bimetallic active site and rigid parent ring skeleton structure, not only improves catalytic activity and thermal stability, but also can be used for preparing bimodal UHMWPE by ethylene polymerization.

This invention provides a highly thermally stable, photoresponsive α-diimine nickel complex, its synthesis method, and its applications, aiming to develop novel olefin polymerization catalysts with both excellent thermal stability and photoresponsive properties. The core photoresponsive switch of this type of nickel complex is a rigid diphenylethylene derivative, which can achieve reversible photoisomerization of the E / Z configuration under 365 nm and 405 nm ultraviolet light irradiation: the E configuration has a relatively open coordination environment; after light irradiation, the Z configuration has a more compact spatial structure, which can form a dual regulatory mechanism: steric hindrance and potential metal-aryl π interactions. Due to this dual regulatory mechanism, the complex exhibits excellent thermal stability at 150 °C. o Even at high temperatures, it still maintains a high value of 0.8 × 10⁻⁶. 6 g·mol ‑1 ·h ‑1 The nickel complex of this invention exhibits enhanced catalytic activity and effectively inhibits chain transfer and chain walking reactions during high-temperature polymerization. By synergistically enhancing thermal stability through configurational tautomerism, and possessing both photoresponsive properties and high catalytic activity, it holds significant research value and broad application prospects in the precise synthesis of functionalized polyolefin materials.

The application discloses a kind of vinylidene acenaphthene double asymmetric alpha-diimine chemical intermediates and catalyst prepared from it, intermediate and the preparation method and application of catalyst. 2,4,6-tri-tert-butyl aniline is used as raw material, in the presence of catalyst, under the condition of 120 DEG C, the vinylidene acenaphthene double asymmetric alpha-diimine chemical intermediate with structure as shown in formula (I) is obtained.Compared with prior art, the application uses commercially available, low-cost and storage condition loose 2,4,6-tri-tert-butyl aniline instead of high-cost, storage harsh 2,4-di-tert-butyl aniline as reaction raw material, which effectively reduces the raw material procurement threshold and comprehensive production cost, and simplifies the storage condition.The raw material of the method is easy to obtain, low in cost, easy to operate, high in yield, and suitable for industrial scale-up production.

The present invention relates to the technical field of olefin polymerization catalysts, and discloses a phosphine-phenol late transition metal complex and preparation method therefor and use thereof. The structural formula of the phosphine-phenol late transition metal complex is shown in formula (I), wherein, R1 is selected from substituted or unsubstituted C1-C20 hydrocarbyl, R3 and R4 are each independently selected from halogen, C1-C10 hydrocarbyl, -P(R5)3, -NR6R7 and -OR8R9, wherein R5 is substituted or unsubstituted C1-C10 alkyl or aryl, R6, R7, R8 and R9 are each independently selected from C1-C10 hydrocarbyl, and R6 and R7, as well as R8 and R9, are optionally interconnected to form a five- or six-membered ring. Under similar polymerization conditions, by using the metal complex of the present invention as a catalyst for olefin polymerization, a higher homopolymerization / copolymerization activity can be achieved, and the obtained polymer has an obviously higher molecular weight and a narrower molecular weight distribution.

The invention relates to ylide-functionalized phosphane ligands, the production of same and use in transition metal compounds, as well as the use of same as catalysts in organic reactions.

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 application provides an alpha-carboxyl-beta-diimine nickel complex and a preparation method and application thereof and a preparation method of ethylene-methyl acrylate copolymer. The alpha-carboxyl-beta-diimine nickel complex has a structure shown in general formula (I): in the general formula (I), Ar is selected from 2,6-dialkylphenyl; X is chlorine or bromine; and L is acetonitrile or benzonitrile. The preparation method of the alpha-carboxyl-beta-diimine nickel complex is that acetylacetone is reacted with 2,6-dialkylaniline, then reacted with ammonium formate under the action of alkyl lithium, and then reacted with a halogenated nickel salt in an acetonitrile or benzonitrile solvent to obtain the alpha-carboxyl-beta-diimine nickel complex. The application further provides a preparation method of ethylene-methyl acrylate copolymer, which uses the alpha-carboxyl-beta-diimine nickel complex as a main catalyst. The application improves the copolymer molecular weight and the methyl acrylate insertion rate, and makes the prepared EMA similar to the branched structure of a commercial product prepared by a free radical process.

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

The invention relates to the technical field of polyolefin, in particular to a polyolefin catalyst, a ligand of the polyolefin catalyst and a preparation method and application of the polyolefin catalyst, and the polyolefin catalyst is an alpha-diimine ligand with a general formula structure shown in a formula L. In the formula, R1-R11 are independently selected from H, C1-C6 alkyl, C1-C6 alkoxy, C6-C12 aryl or halogen respectively. The catalyst with a novel structure is prepared, the catalyst is high in thermal stability and catalytic activity and can be well applied to preparation of the cycloolefin copolymer through catalytic polymerization, the insertion rate of cycloolefin monomers is increased, the glass-transition temperature can be increased, the copolymer has narrow molecular weight distribution, high cycloolefin content and excellent heat resistance, and the catalyst can be applied to preparation of the cycloolefin copolymer through catalytic polymerization. And the requirements of high-end optical materials are met.

The invention discloses a metal complex with anti-tumor activity, and relates to the technical field of medicines. The invention relates to a metal complex with anti-tumor activity, the metal complex provided by the invention has a remarkable inhibition effect on proliferation of human lung cancer PC-9 cells and nasopharyngeal carcinoma cells Hone1 cells, the unique chemical structure of the metal complex endows higher selectivity for tumor treatment, and the problem of drug resistance of traditional drugs is effectively solved; important technical support is provided for developing novel efficient anti-tumor drugs.

An olefin polymerization catalyst composition comprising a compound represented by the following general formula (A) and a transition metal compound represented by the following general formula (E) or (F): (the definitions of the general formulae are as described in the DESCRIPTION.)

The invention relates to the field of polyolefin catalysis, and discloses a nickel complex and a preparation method thereof, a catalyst composition and application thereof, and a method for ethylene and alpha-olefin copolymerization and ethylene homopolymerization. The nickel complex has a structure as shown in a formula (I). The nickel complex provided by the invention has excellent water and oxygen stability, the preparation method of the nickel complex is simple and convenient to operate, the cost of the nickel complex in the preparation, purification, storage and use processes is remarkably reduced, and when the nickel complex is applied to a copolymerization reaction of ethylene and alpha-olefin and an ethylene homopolymerization reaction, the water and oxygen stability of the nickel complex is greatly improved. The catalyst has excellent catalytic activity and good thermal stability, and has a good industrial application prospect. Formula (I).

The present invention provides a tetraazacyclododecane tetraacetic acid metal catalyst that can be used to oxidize β-carotene to canthaxanthin using hydrogen peroxide as an oxidant. This process provides mild conditions, high product yield, and high selectivity for the all-trans isomer. Furthermore, the catalyst has the advantages of low toxicity, minimal environmental pollution, and recyclability.

A method for preparing an olefin-olefinic alcohol copolymer and an olefin-olefinic alcohol copolymer prepared by the method are provided. The catalyst used in the method for preparing the olefin-olefinic alcohol copolymer has a diimine metal complex as shown in Formula I.

The present invention relates to novel ligands of formula 1, their metal complexes and their use for catalytic purposes. In Formula 1, R1 is alkyl, perfluoroalkyl, aryl, or cycloalkyl, each of which is unsubstituted or substituted with cyano, sulfonyl: -SO2-R10 (R10 = C1-C5 alkyl, C5-C6 cycloalkyl, C5-C10 aryl, each of which is unsubstituted or substituted with C1-C4 alkyl or C1-C4 perfluoroalkyl), or silyl: Si(R20R30R40) (R20, R30, and R40 are, independently of one another, C1-C6 alkyl or C5-C10 aryl, each of which is unsubstituted or substituted with C1-C4 alkyl); R2 is alkyl, cycloalkyl, adamantyl, or aryl, each of which is substituted or unsubstituted; and R3, R4, and R5 are alkyl, cycloalkyl, or aryl. R3 and R6, and / or R4 and R7, and / or R5 and R8 together form an alkyl bridge or alkyl ether bridge which, together with the nitrogen atom to which they are attached, forms a heterocyclyl ring; R6, R7, and R8 are alkyl or aryl which are unsubstituted or substituted, or which, individually or collectively, form a heterocyclyl ring with R3, R4, or R5 and the nitrogen atom to which they are attached; and m, n, and o are 0 or 1, provided that at least one of m, n, and o is 1.