114 results about "Coordination geometry" patented technology

The invention relates to a nickel-coordination polymer and a preparation method thereof. molecular formula of the complex is represented as {[Ni2(BPTC) (1,4-bib)2(H2O)]2}}n, wherein H4BPTC is 3,4,3',4'-biphenyl tetracarboxylic acid and 1,4-bib is 1,4-bisimidazolyl benzene. The preparation method of the complex comprises the steps of mixing the H4BPTC, the 1,4-bib and Ni(NO3)2.6H2O in water at a certain proportion, regulating pH value to 6.5, adding a mixing liquid in a 13ml polytetrafluoroethylene tube, stirring for 30min at room temperature, sealing the polytetrafluoroethylene tube in a stainless steel reaction kettle, crystallizing for 72 hours at 160 DEG C, naturally cooling to room temperature to separate out light blue granular crystals, washing the crystals through distilled water and pumping the crystals through a vacuum pump, wherein yield is above 78%. The complex, through nickel dimer units in the structure and weak ferromagnetic action between dimer metallic nickel ions, can serve as a molecular magnetic material.

The invention discloses a phosphorescence iridium complex by taking a quinazoline derivative as a ligand and an organic electroluminescent device thereof. The structure of the phosphorescence iridium complex disclosed by the invention is represented by the formula (I) or the formula (II) described in the specification, wherein Ar represents aryl, substituted aryl, heterocyclic aryl and substituted heterocyclic aryl; R can be one of a halogen atom, alkyl, substituted alkyl, alkoxy, aryloxy, alkyl sulphanyl, aryl sulphanyl, aromatic amino, fatty amino and heterocyclic substituent; L^Y can be one of N^COOH, N^OH, beta-diketone, N^NH and the like; N^N can be bipyridyl, biquinolyl, phenanthroline and derivatives thereof and the like; and Z can be a hexafluorophosphoric acid radical, a perchloric acid radical and the like. A light-emitting layer of the electroluminescent device disclosed by the invention is prepared by adopting a spin coating and film-preparing method under a specified condition, has the advantages of being low in cost, simple for operation and steady in chemical property, and is beneficial to preparing large-screen electroluminescent devices.

The invention provides an organic electroluminescent iridium coordination compound and a preparation method and application thereof, relating to an iridium-containing organic electroluminescent material and a preparation method thereof and application thereof. The invention solves the problems of the electroluminescent iridium coordination compound with a host-guest intergraded structure such as difficult synthesis, bad thermo-stabilization performance, bad solution processing performance and low electroluminescent efficiency. The coordination compound has the following formula. The method comprises the steps of: reacting benzaldehyde or ramification of the benzaldehyde with o-phenylenediamine; reacting a product after the reaction with hole transport group-substituted bromine to obtain ligand; reacting the ligand with iridium chloride; and reacting a product with glycerol and potassium carbonate to obtain the coordination compound. The organic electroluminescent iridium coordination compound is used in an organic electroluminescent device. The thermal decomposition temperature of the coordination compound is 402 DEG C, the synthesis is easy, the current density of the electroluminescent device is 200-450 mA/square centimeter, the luminosity is 2800-11000 cd/square meter, and the maximum external quatum efficiency is 6%.

The invention provides an RGD polypeptide coordination complex of a radioactive nuclide label. According to the structure of the coordination complex, the radioactive nuclide is selected from 64Cu, 68Ga, 111In, 62Cu, 67Cu, 67Ga, 86Y, 89Zr or 18F; the ligand is a ligand compound containing an RGD structure, which is shown in a formula (I). The coordination complex has stronger ligand stability and high target/non-target ratio, and the appetency of the ligand with integrin AlphavBeta3 is stronger. The invention further provides a preparation method of the coordination complex, and an application of the coordination complex in preparing tumor developers.

The present invention discloses ruthenium porphyrin complex and its preparation process and application as photosensitizer for photodynamic therapy. The ruthenium porphyrin complex with the structure as shown has ruthenium as the central metal ion, pyridyl radical containing asymmetrical porphyrin and its metal derivative as the ligand, and coordinate bond jointing the ruthenium pyridyl radical and the porphyrin ring. The ruthenium porphyrin complex of the present invention has determined composition, less toxic side effect and good absorption and metabolism in organism, and is suitable for use as photosensitizer for photodynamic therapy.

The invention belongs to the technical field of olefin polymerization catalysts, and discloses an [N,N,N,N] tetradentate ligand fourth subgroup transition metal complex and a preparation method and application thereof. The [N,N,N,N] tetradentate ligand fourth subgroup transition metal complex has the general structural formula I or II shown in the specifications. According to the preparation method, a toluene solution of a Ti or Zr or Hf halide and a toluene solution of a tetradentate ligand I are mixed and react for 1-12 hours, and solvent toluene is distilled off; the mixture continues reacting for 1-3 hours, and then a crude complex can be obtained; furthermore, recrystallization is conducted in organic solvent so as to obtain the complex with the general structural formula I. Serving as a main catalyst, the complex can be applied to catalytic ethylene polymerization. The complex is stable in structure, good in heat resistance, long in service life and high in catalytic activity; polyethylene obtained in catalytic ethylene polymerization has an ultra-high molecular weight.

The present invention is catalyst capable of catalyzing the carbonylation of methanol into acetic acid and the carbonylation of methyl acetate into acetic anhydride in high speed, high selectivity and relatively mild condition. By means of design of catalyst molecule structure, non-rhodium metal with certain catalytic activity or obvious catalysis assisting activity on carbonylation reaction is introduced into catalyst with rhodium as active component to form new double active component catalyst. Of the catalyst, the positive ion active component may be square planar cis-bicarbonyl structure formed with organic compound or polymer containing N and O donor atom and Rh(I); and the negative ion active component may be coordination compound structure formed with organic carboxylic acid compound containing N and O donor atom and transition metal salt.

The invention relates to an europium complex and a preparation method thereof. The europium complex is shown as a condensed structural formula [Eu(D-DTTA)3(CH3O)3]n, wherein D-H2DTTA refers to (+)-2,3-diacetyl para-toluene-D-tartaric acid, and CH3OH refers to methanol. The preparation method includes mixing a D-H2DTTA methanol solution with an EuCl3 water solution, adding a specific quantity of KOH waste solution to regulate a pH value to range from 3.0 to 4.5, stirring, standing until colorless and transparent triangular prism crystals separate out sufficiently, filtering and collecting a product, wherein the yield is 48%. The europium complex structurally comprises nine-coordinated europium ions, and ligands refer to D-DTTA<2-> and CH3O<-> negative ions. The solid europium complex can serve as an optical material by representing strong red light characteristics of Eu (III) by being excited by light 280 nm in wavelength.

The invention discloses a preparation method for a photoluminescence core-shell nano-copper cluster. Aqueous solutions of different PH values are adopted, a metal-mercaptoacetic acid and triethylene tetramine complex is formed, a weak reducing agent is used for hydrazine hydrate reduction or ultrasonic processing reduction, and then the core-shell nano-copper cluster can be obtained. The preparation method is easy to operate and low in cost. The photoluminescence core-shell nano-copper cluster which is obtained according to the method and is made of copper nanometer cluster materials is formed by using nucleus of five copper atoms and a self-assembled multi-layer copper complex structure as a shell, green light with the broadband being 400-600 nm can be emitted out under the ultraviolet illumination of 300-380 nm, the light emitting wave band and the light emitting intensity can be adjusted, and the advantages of good stability, water-solubility, compatibility and the like are provided. The preparation method can be applied to the fields of biological sensors, optical imaging, catalyzing and the like.

The invention discloses a benzylamine side arm-containing half-metallocene chromium (IV) complex and application thereof, belonging to the technical field of olefin polymerization catalysts. The benzylamine side arm-containing half-metallocene (IV) complex has a following structure expression: the structure expression is shown in the description. The benzylamine side arm-containing half-metallocene (IV) complex can be applied to catalysis of ethylene homopolymerization or catalysis of the copolymerization of ethylene and alpha-olefin by taking the benzylamine side arm-containing half-metallocene (IV) complex as a main catalyst and taking alkylaluminoxane or a mixture of aluminum alkyl and an organoboron adjuvant as a catalyst promoter. The half-metallocene chromium (IV) complex provided by the invention has the advantages that the structure is stable, the heat resistance is good, the service life is long, the catalytic activity is high, the copolymer molecular weight is high and the like.

A three-dimensional heterometallic coordination polymer and a preparation method thereof relate to the coordination chemistry field. The invention adopts imidazole-4, 5-dicarboxylic acid and acetic acid as coordinators and adopts samarium ions and manganese ions as atoms to prepare the coordination polymer, (SmMn2(HIMDC)(CH3COO)(H2O))n, by changing the molar ratio of each substance and with a hydrothermal (solvothermal) synthesis technology. The novel coordination polymer has distinct structure and is a valuable luminescent material.

A chiral multi-tooth oxazoline ligand, its matches with primary-family metals or transition metals, its synthesizing process, and its application in asymmetrical catalytic synthesis are disclosed.

The invention provides a trinuclear rare earth complex based on a schiff base ligand as well as a solvent thermal preparation method and application of the trinuclear rare earth complex. Schiff base formed by 4-aminoantipyrine and aromatic aldehyde with one hydroxyl group respectively at an ortho-position and a meta-position is taken as the ligand; the schiff base ligand is enabled to react with rare earth metal ions for 48-72h in a closed way under the conditions of low temperature and a mixed organic solvent, and is then subjected to coordination in a closed high pressure environment, so that the trinuclear rare earth complex which is clear in structure and stable in properties can be formed; from the view of the structure of the complex, the two hydroxyl oxygen adjacent atoms, which are respectively positioned at the ortho-position and the meta-position of the aromatic aldehyde, not only participate in the coordination, but also form an oxygen bridge so as to link three rare earth metal ions, so that the stability of the complex is improved. The solvent thermal preparation method of the trinuclear rare earth complex is simple and easy to control and convenient in purification, can be used for rapidly obtaining complex crystal, and facilitates structural analysis and performance study; furthermore, antibacterial experiments prove that the trinuclear rare earth complex based on the schiff base ligand has candida species resistance, thus being applied to inhibition of candida species as a bacteriostatic agent.

The invention relates to an N, N-coordination dimeric rhodium (II) complex as well as a preparation method and application of the complex. The dimeric rhodium (II) complex is obtained through a ligand exchange reaction between N-(2- pyrrolidinyl) sulfimide compounds and rhodium acetate dimer. The complex has the advantages of a novel structure, easy available synthetic raw materials and a simple reaction operation. The complex shows good catalytic activity in a benzyl oxidizing reaction.

The invention discloses preparation for a lead-MOF complex with fluorescent performance. The lead-MOF complex has a molecular formula of [Pb(L)0.5(DMA)(H2O)].DMA.2H2O, a structure of the complex belongs to a monoclinic crystal system C2/c space group, a basic structural unit of the crystal is obtained by symmetric operation of asymmetric units, a symmetric operation code is <1>-1/2+X, -1/2+Y, +Z;<2>1/2+X, 1/2+Y, +Z; <3>1-X, 1-Y, 1-Z, the asymmetric units have a 1/2 coordination ligand, a Pb<2+>, a coordinated DMA molecule, the Pb<2+> adopts a five-coordination mode, wherein four oxygen atomsare respectively from two different perylene derivative ligands, and another oxygen atom is from the coordinated DMA molecule DMA molecule, and an average bond length of Pb-O is shown in the description. The lead-MOF complex disclosed by the invention has the advantages of controllable preparation of the fluorescent complex

The invention discloses a dinuclear terbium (III) coordination polymer and a preparation method and application thereof. A chemical formula of the coordination polymer is [Tb2(HPIDC)(C2O4)2(H2O)3.2H2O]n, wherein H3PIDC is 2-(2-pyridyl)-1H-imidazole-4,5-dicarboxylic acid, and H2C2O4 is oxalic acid. The preparation method includes: dissolving TbCl3, H3PyIDC and H2C2O4 into H2O/ethyl alcohol (V:V=1:1) mixed solution according to a molar ratio of 2:1:1, adding KOH solution to adjust pH to 4, and reacting at 160 DEG C for 72h in a hydrothermal reaction kettle; cooling to the room temperature to obtain pale yellow bulk crystals, washing with water and ethyl alcohol mixed solvent, then washing with diethyl ether, and finally performing vacuum drying, wherein the yield is 57.5%. The coordination polymer structurally comprises terbium ions in two coordination modes, ligands are HPIDC<2-> and C2O4<2-> anions, and the dinuclear terbium (III) coordination polymer is a three-dimensional coordination polymer. The coordination polymer is a solid luminescent material, a sample is capable of emitting green light by 330nm-wavelength optical excitation, a chromaticity coordinate is (0.284, 0.523), fluorescence quantum yield is 34.7%, and fluorescence lifetime is 1.32ns.

The invention discloses preparation for a cadmium-MOFs complex with the fluorescence property. According to the preparation for the cadmium-MOFs complex, the molecular formula of the cadmium-MOFs complex is {[Cd2(L)(H2O)].DMA.Diox.2H2O}n, the structure of the complex belongs to P-1 space groups, basic structural units of crystals is obtained by carrying out symmetry operation on asymmetric units,the symmetry operation code is <1>1-X, 2-Y, 1-Z; <2>1+X, +Y, 1+Z; <3>1-X, 3-Y,-Z; <4>2-X, 3-Y, 1-Z, <5>-1+X, +Y, -1+Z; <6>2-X, 3-Y,-Z, each asymmetric unit is provided with a coordinate ligand, two Cd<2+> ions and a coordinate H2O molecule, the Cd<2+> ions with two coordination modes exist in the complex, Cd1 adopts a seven-coordination mode, six oxygen atoms are respectively from four different perylene derivative ligands, the other oxygen atom is from the coordinate H2O molecule, Cd2 adopts a six-coordination mode, four oxygen atoms are respectively from four different perylene derivative ligands, and the other two oxygen atoms are from the coordinate H2O molecule. The preparation for the cadmium-MOFs complex has the advantage that controllable preparation of the fluorescent complex canbe realized.

The invention provides a metal-organic framework material and belongs to the field of metal-organic framework crystalline-state materials. In a compound structure provided by the invention, organic phosphor and metal ions (zinc) are subjected to a coordination action force and the organic phosphor can be fixed in a metal-organic framework rigid skeleton to inhibit the intramolecular motion of thephosphor, limit the thermal vibration necessary for triplet-state non-radiation attenuation and also promote the intersystem crossing and a triplet state, so that long-service-life room-temperature phosphorescence and effective exciton migration are realized. Therefore the metal-organic framework material with a long phosphorescence service life is designed and synthesized and has important actualapplication value in the aspects of prolonging the service life of excitons and extending a migration distance, and improving the photoelectric properties of the material; meanwhile, after a Rhodamine dyestuff is doped, the photoresponse of the material can be extended to a visible light region from a single ultraviolet light region and the photoelectric properties of the material can be furtherimproved.

The invention provides Ru (II)-Salen metal complexes and preparation methods thereof, and relates to metal complexes and preparation methods thereof. According to the three Ru (II)-Salen metal complexes, Ru(DMSO)4Cl2 is taken as the metal precursor, and Salen ligands are H2L<1>, H2L<2> and H2L<3> obtained through condensation reactions of ethanediamine with salicylaldehyde, 5-bromosalicylaldehyde and hydroxyacetophenone respectively. The three Ru (II)-Salen metal complexes Ru(DMSO)2(H2L<1>), Ru(DMSO)2(H2L<2>) and Ru(DMSO)2(H2L<3>) are prepared with a step-by-step synthesis technique by changing conditions of each reaction process. The three novel complexes have clear structures as well as stability on water and air; the reaction conditions are mild and the post-processing is simple in catalysis of oxidizing reaction of alcohol, and the three Ru (II)-Salen metal complexes have good catalytic activity and selectivity.

The invention discloses synthesis, a crystal structure, a luminescence property and application of a divalent manganese complex with efficient green phosphorescence and tribo-luminescence performances. By introducing bidentate chelate organic phosphine oxide with larger steric hindrance and excellent sensitization capability and taking a halide ion with a heavy atom effect as a ligand, a mononuclear Mn (II) complex with four coordination geometries is synthesized. Based on test results, the complex is a novel green phosphorescence luminescent material with high stability and luminous efficiency and long luminescence lifetime at room temperature, and simultaneously, the material further has tribo-luminescence performance at a crystal state. Therefore, the material can be applied to manufacturing phosphorescence luminescent devices, pressure-sensing luminous bodies, pressure detection sensors and display elements of other scientific instruments.

The invention provides an L-pyroglutamic acid metal complex with a structure shown in a formula I, and belongs to the technical field of pesticides. The L-pyroglutamic acid metal complex with the structure shown in the formula I has the advantages that the structure is simple, the good preventing and control effects are realized on the diseases and pests of crops, and the safety effect is realizedon the crops; proofed by data, the L-pyroglutamic acid metal complex has good preventing and controlling effects on cucumber downy mildew, cucumber powdery mildew, grape downy mildew and potato lateblight. The formula I is shown in the attached figure.