653results about "Iron organic compounds" patented technology

An aspect of the present invention relates to a method of manufacturing hexagonal ferrite magnetic powder. The method of manufacturing hexagonal ferrite magnetic powder comprises wet processing hexagonal ferrite magnetic particles obtained following acid treatment in a water-based solvent to prepare an aqueous magnetic liquid satisfying relation (1) relative to an isoelectric point of the hexagonal ferrite magnetic particles: pH0−pH*≧2.5, wherein, pH0 denotes the isoelectric point of the hexagonal ferrite magnetic particles and pH* denotes a pH of the aqueous magnetic liquid, which is a value of equal to or greater than 2.0, adding a surface-modifying agent comprising an alkyl group and a functional group that becomes an anionic group in the aqueous magnetic liquid to the aqueous magnetic liquid to subject the hexagonal ferrite magnetic particles to a surface-modifying treatment, and removing the water-based solvent following the surface-modifying treatment to obtain hexagonal ferrite magnetic particles.

A catalyst system comprising:(a) one or more bisarylimino pyridine iron or cobalt catalysts;(b) a first co-catalyst compound which is selected from aluminium alkyls, aluminoxanes, and mixtures thereof; and(c) a second co-catalyst compound which comprises one or more compounds of the formula ZnR′2 wherein each R′, which may be the same or different, is selected from hydrogen, optionally substituted C1–C20 hydrocarbyl, phenyl, Cl, Br, I, SR″, NR″2, OH, OR″, CN, NC wherein R″, which within the same molecule may the same or different, is C1–C20 hydrocarbyl.

This invention provides metal complexes being useful as catalyst components in metathesis reactions and in reactions involving the transfer of an atom or group to an ethylenically or acetylenically unsaturated compound or another reactive substrate and, with respect to a sub-class thereof, for the polymerisation of α-olefins and optionally conjugated dienes, with high activity at moderate tempera-tures. It also provides methods for obtaining polymers with very narrow molecular weight distribution by means of a living reaction. It also provides methods for making said metal complexes and novel intermediates involved in such methods. It further provides derivatives of said metal complexes which are suitable for covalent bonding to a carrier, the product of such covalent bonding being useful as a supported catalyst for heterogeneous catalytic reactions. It also provides a direct one-step synthesis of pyrrole, furan and thiophene compounds from diallyl compounds.

Disclosed herein are metal-terpyridine complexes and their use in hydrosilylation reactions.

This invention provides metal complexes being useful as catalyst components in metathesis reactions and in reactions involving the transfer of an atom or group to an ethylenically or acetylenically unsaturated compound or another reactive substrate and, with respect to a sub-class thereof, for the polymerisation of α-olefins and optionally conjugated dienes, with high activity at moderate tempera-tures. It also provides methods for obtaining polymers with very narrow molecular weight distribution by means of a living reaction. It also provides methods for making said metal complexes and novel intermediates involved in such methods. It further provides derivatives of said metal complexes which are suitable for covalent bonding to a carrier, the product of such covalent bonding being useful as a supported catalyst for heterogeneous catalytic reactions. It also provides a direct one-step synthesis of pyrrole, furan and thiophene compounds from diallyl compounds.

Metal carbonyls are used to deliver CO having biological activity, for example vasodilatation and inhibition of transplant rejection. The metal of the carbonyl is typically of groups 7 to 10, e.g. Fe and Ru. The carbonyl preferably has one or more ligands other than CO, such as amino acids, to modulate the CO release property and solubility.

The invention discloses a high-stability metal organic skeleton hybrid material. The metal organic skeleton hybrid material has high hydrothermal stability, and comprises metal organic skeleton and attapulgite, wherein the mass ratio of the attapulgite to the metal organic skeleton is (0.005-0.7):1.

The invention provides a coordination polymer material with a multistage pore passage structure and a preparation method thereof. The coordination polymer material with a multistage pore passage structure is internally provided with the multistage pore passage structure, the multistage pore passage structure is a microporous and / or mesoporous and / or macroporous multistage pore passage structure which is formed by the self assembly between the metal ion and the organic ligand, the apertures of the micropores are less than or equal to 2nm, the apertures of the mesopores are from 2nm to 50nm, and the apertures of the macropores are more than 50nm. The coordination polymer material with a multistage pore passage structure is large in specific surface, the large-size organic ligand does not need to be synthesized, and the coordination polymer material with larger porous sizes can be obtained without the template agent and the pore assisting agent, so that the invention is simple in preparation method, and low in cost.

The present invention relates to reducible porous crystalline solids, constituted of a metal-organic framework (MOF), for the separation of mixtures of molecules having different unsaturation degrees and / or a different number of unsaturations with a selectivity that can be adjusted by controlling the reduction of the MOF.The MOF solids of the present invention, after reduction, have a strong affinity for molecules containing at least one unsaturation. They can be used in various separation processes, especially those relating to hydrocarbons.

A process for producing a metalloporphyrin containing a transition metal inserted into the porphyrin ring which comprises dissolving a porphyrin compound and a transition metal salt each in an independent solvent, combining the solutions, and carrying out the reaction in the presence of a basic substance. By this process a metalloporphyrin containing a transition metal inserted into the porphyrin ring can be synthesized easily under mild conditions and with high selectivity.

Compounds having quinone and quinone analogs useful for pharmaceutical preparations have now been found which inhibit cysteine proteases, in particular, caspases and 3C-cysteine proteases. The cysteine protease inhibitors of the present invention can be identified by their mode of action in disrupting the ability of cysteine proteases and, in particular, caspases to cleave a peptide chain. These compounds are useful in inhibiting cysteine protease or cysteine protease-like proteins and for treating infections diseases or physiopathological diseases or disorders attributed to the presence of excessive or insufficient levels of cysteine proteases.

The invention discloses a method for synthesizing a metal N-heterocyclic carbene complex. The method comprises the following steps of: adding a nickel N-heterocyclic carbene complex and a metal precursor at a molar ratio of 1: (0.5-2) in an organic solvent such as acetonitrile, acetone or nitromethane, and reacting for 1-24 hours at the temperature of 35-70 DEG C; and after the reaction is completed, crystallizing and purifying so as to obtain the metal N-heterocyclic carbene complex. The method has the advantages of mild reaction conditions, simplicity in post-treatment and high yield; a cheap and available N-heterocyclic carbene complex is used so as to replace the traditional silver N-heterocyclic carbene complex to serve as a carbene transfer reagent, which is a further development for the synthesis method of the metal N-heterocyclic carbene complex, thus a foundation is laid for industrialized application of a transition metal N-heterocyclic carbene catalyst.

The invention provides a family of agents that target integrins, which can be used as imaging agents and / or therapeutic agents. The agents can be used to image angiogenesis, inflammation or other physiological processes in a subject.

The invention discloses a layered metal coordination polymer and a synthesis method thereof, and belongs to the field of lithium ion battery electrode material preparation. The layered metal coordination polymer has a general formula of [ML'(4,4'-bpy)(L' ')2]. The synthesis method comprises that a metal ion salt and one or more organic ligands undergo a reaction in the presence of water, an organic solvent or a mixed system of water and the organic solvent to produce the layered metal coordination polymer. The layered metal coordination polymer can be used as a negative electrode material of a lithium ion battery, and has good cycling stability, a high specific capacity and wide application prospects in the field of lithium ion battery electrode materials. The synthesis method is simple, adopts easily available raw materials, has good technical repeatability, a high yield, safety, a low cost and a wide application range, and is suitable industrial production.

The present invention relates to a new iron containing phosphate adsorbent and its use e.g. for treating hyperphosphataemia.

Methods for controlling surface functionality of metal oxide nanoparticles, nanoparticles having controlled surface functionality, and uses thereof are described herein. Methods for controlling the surface functionality of a metal oxide nanoparticle are can include attaching a ligand to a metal oxide nanoparticle, where the ligand can include a functional portion that is capable of forming an irreversible bond with an object at a site that is complementary to the functional portion without reacting with other reactive sites that may be present. Moreover, metal oxide nanoparticles having versatile ligands can include an anchoring portion that binds to the surface of the metal oxide nanoparticle and a functional portion that is capable of forming an irreversible bond with an object at a site that is complementary to the functional portion without reacting with other reactive sites that may be present. Uses thereof can include cancer detection, electronics, cosmetics, cellular delivery carriers, magnetic storage media, drug delivery carriers, nanocomposite formation for improved mechanical properties, and the like.

A method of enhancing the growth of an animal is provided. The method includes causing the animal to ingest or absorb an effective amount of one or more Fe III complex compounds, including but not limited to Fe III complexes comprising ligands bound to the iron centre selected from amino acids or α-hydroxy acids, o-hydroxy benzoic acids or pyridine-2-carboxylic acids, such as ferric quinate, ferric tyrosine, ferric DOPA and ferric phenylalanine. Compounds which are structural and / or functional variants, derivatives and / or analogs of the foregoing compounds, as further described herein are also disclosed. Methods for inhibiting, reducing, or preventing biofilm formation or buildup on a surface; the treatment of, inhibition of growth of, and inhibition of colonization by, bacteria, both in biological and non-biological environments; disinfecting surfaces, potentiating the effects of antibiotics and other anti-microbial agents, and increasing the sensitivity of bacteria and other microorganisms, to anti-microbial agents are also provided.

The present invention relates to nanocomposite materials comprising: graphite-based material dispersed among transition metal-organic framework (MOF) units, wherein the graphite-based material is chemically linked to MOF units; wherein the graphite-based material is present in the range of about 5 wt. % to about 60 wt. % of the composite material.

The invention discloses a tridentate nitrogen ligand 2,6-diimine pyridine contained iron or cobalt complex and a preparation method thereof. The structural formula of the complex is shown in a formula I, wherein M is iron or cobalt, and R1 and R2 are selected from any one of hydrogen and alkyl. The preparation method is as follows: under anaerobic conditions, a ligand shown in a formula IV is reacted with FeCl2 4H2O or CoCl2 to obtain the complex shown in the formula I. The N ^ N ^ N ligand containing asymmetric 2,6-diimine pyridine ligand and iron metal complex is synthesized, and the metal complex is used for catalyzing an ethylene polymerization reaction, and shows high catalytic activity. The obtained polymer has a high molecular weight, the catalyst has strong tolerance to high temperature, for example, at a higher temperature (80 DEG C), the iron (II) complex shows high polymerization activity on ethylene, and the polymerization activity can reach 2.2*107g mol<-1> (Fe) h<-1>; and the metal complex has wide industrial application prospects. (Formula I) (Formula IV).

The invention discloses a derivative with electroluminescent and electrochromic characteristics and a complex thereof. Specifically, a series of mono-branched and poly-branched structures are obtained by taking 4-phenyl terpyridyl as a terminal group and connecting electron-attracting groups (such as nitro, aldehyde group and carboxyl group) or push donor groups (such as hydroxyl, a diphenylamine derivative and a triphenylamine derivative). A general formula is shown in the specifications. The triple pyridine derivative disclosed by the invention has superior light stability, superior thermal stability and remarkable electroluminescent characteristic; a metal complex of the derivative has remarkable triplet luminous characteristic, and can be applied to an OLED (Organic Light Emitting Diode) luminous material; and more importantly, the metal complex has superior electrochromic characteristic, and is suitable to be taken as a smart off-color material.

The invention provides a quadridentate pyridyl schiff base metal complex with a structure as shown in a formula (I) or (II), a preparation method of the metal complex as well as a preparation method of cyclic carbonate. The cyclic carbonate is prepared by cycloaddition of carbon dioxide and epoxide in the presence of the quadridentate pyridyl schiff base metal complex and a catalyst promoter, namely quaternary ammonium salt. During cycloaddition, the quadridentate pyridyl schiff base metal complex as a main catalyst has high catalytic activity, thereby enhancing the reaction rate of cycloaddition, and also has good product selectivity, thereby enhancing the yield of cyclic carbonate in a product. Experiment results show that the product selectivity of the quadridentate pyridyl schiff base metal complex is higher than 99% and cycloaddition singly generates cyclic carbonate.

The invention provides a preparation method for a nanometer organic metal framework by ultrasonic atomization. The method comprises the following steps: dissolving a soluble metal salt and an organic ligand in a certain solvent, carrying out ultrasonic atomization so as to produce liquid drops, introducing inert carrier gas so as to bring the liquid drops to a tubular furnace preset with a certain temperature, and carrying out a reaction so as to prepare the nanoscale organic metal framework. The method provided by the invention is simple to operate and can realize continuous reaction to prepare the nanoscale organic metal framework.

A method is disclosed for treating inflammatory disease in an animal in need thereof by administering to the animal a pharmaceutical composition containing an anti-inflammatory effective amount of an organic aldehyde compound or a derivative thereof in a pharmaceutically acceptable vehicle.

The invention provides a preparation method of a metal organic framework material. The metal organic framework material is synthesized by virtue of a hydrothermal method or a heating reflux method and is a metal organic framework MOF(Fe) material. The invention also discloses a cigarette filter tip added with the metal organic framework MOF(Fe) material. According to the preparation method and application of the metal organic framework material, by adding the metal organic framework MOF(Fe) material into the cigarette filter tip, the contents of harmful ingredients such as ammonia and benzo[a]pyrene in cigarette mainstream smoke can be effectively decreased; the environmental friendliness is achieved and the safety to a human body after the material is added into the cigarette is ensured. Meanwhile, the metal organic framework MOF(Fe) material has super-strong adsorption capacity to organic dye pollutants and is worthy of popularization and application.

The invention discloses a bis (imino) pyridine iron olefin polymerization catalyst and a preparation method and application thereof. The catalyst is a novel bis(imino)pyridine iron complex with the asymmetric substitution of position 2 and 6 of an aromatic ring; and the structural formula of the catalyst is shown in formula (I), wherein X is halogen, R1 is alkyl, and R2 is the alkyl or oxyl. The catalyst can be obtained through a Friedel-Crafts reaction, a ketoamine condensation reaction and a coordination reaction. The preparation method is simple, and raw materials are cheap. The catalyst can catalyze the polymerization of ethylene under the activation of MAO to prepare polyethylene with high molecular weight and wide distribution.

A compound of ferrous L-threonate with structure (I), its compostions and methods useful for iron supplementation for mammals, particularly for human body to improve and treat nutritional iron-deficiency anemia, blood loss anemia and hemolytic anemia.

The invention is a nano-entity conjugate for use in an in vivo immunomagnetic hyperthermia system for the detection and treatment of any cell or virus having a target surface receptor which encompasses a technology platform that can be used for both real-time monitoring of any cell or virus having a target surface receptor and as a delivery platform for certain types of treatment that are conducive for in vivo applications. The system allows of cell or virus enumeration; cell or virus capture; and cell or virus removal from the patient's circulatory system in-vivo using immunomagnetic hyperthermia. The application of immunomagnetic hyperthermia may actually diminish and eventually stop the progression of cancer and other blood borne or blood affected diseases.