14 results about "Triclinic crystal system" patented technology

This invention discloses a polyoxometalate that catalyzes the Knoevenagel reaction, its preparation method, and its applications. The chemical formula of the polyoxometalate that catalyzes the Knoevenagel reaction is: H3[K(H2O)6][K2(H2O) 10 ]2[Cu(en)2(H2O)2][Cu(en)2(Nb6O 19 Cu(en))2·24H2O, where en = ethylenediamine; the polyoxometalate crystals catalyzing the Knoevenagel reaction belong to the triclinic crystal system with space group P-1; the polyoxometalates catalyzing the Knoevenagel reaction prepared in this invention exhibit excellent heterogeneous catalytic performance in the highly efficient Knoevenagel condensation reaction, showing high yield and high stability under isothermal conditions at a 1:1 substrate ratio and over a wide substrate range. The superior catalytic ability of the polyoxometalates catalyzing the Knoevenagel reaction can be attributed to the presence of dense and effective basic sites on the surface of the heteropolycationic chain, and the increased contact frequency between the organic-inorganic hybrid catalyst and the substrate.

This invention relates to the field of chemical pharmaceuticals, and more particularly to a mebendazole crystal form and its preparation method. The mebendazole crystal form has a single-crystal structure belonging to the triclinic crystal system; space group Triclinic P; cell parameters a = 6.10 Å, b = 15.69 Å, c = 20.35 Å; α = 94.14°; β = 97.22°, γ = 90.70°, V = 1926 Å. 3 The optimization and development of the crystalline form of p-toluimidazole provided by this invention is of great value.

This invention belongs to the field of fuel cell technology, specifically relating to a method for preparing and applying a hydrogen-bonded organic framework material with high proton conductivity constructed from carboxylic acid-aminoguanidine. The chemical formula of this organic framework material is [(CN4H7)(C 10 [O8H5], this organic framework material belongs to the triclinic crystal system. P Space group 1, cell parameters: a =7.9901(4)Å, b =9.6412(3)Å, c =9.6724(4)Å, α =96.322(3)°, β =113.876(4)°, c =93.633(3)°. The hydrogen-bonded organic framework material constructed by carboxylic acid-aminoguanidine and the composite film prepared therefrom have high proton conductivity and are highly promising proton conduction materials.

This invention discloses a method for preparing and applying a gold cluster scintillator protected by a stable luminescent free radical ligand. The scintillator material uses (3,5-dichloro-4-pyridine)bis(2,4,6-trichlorobenzene)methyl free radical (PyBTM) as a ligand, and a chain-like tetranuclear free radical cluster is constructed using a one-pot method. The chemical formula of the compound is [Au4(PNP)2(PyBTM)2](SbF6)4, belonging to the triclinic crystal system, space group R-3. This free radical cluster scintillator achieves 100% theoretical exciton utilization and a short radiation decay lifetime due to its unique doublet emission mechanism. These properties make it an ideal candidate material for overcoming the contradiction between high luminous yield and fast response in traditional scintillators. Due to the excellent thermal and water-oxygen stability of this system, it can be fabricated into a scintillator screen to further achieve high-quality X-ray imaging with a spatial resolution of up to 31 LP·mm. ‑1 This provides a general design strategy for high-performance radiation detection materials.

The application provides a 2-amino terephthalic acid dimethyl ester-tetracyano benzene eutectic crystal as well as a preparation method and application thereof, the eutectic crystal is of a triclinic system, a space group is a cell parameter is alpha = 95.041 (2) °, beta = 90.337 (2) °, gamma = 97.670 (2) °, and a cell volume is The 2-amino terephthalic acid dimethyl ester-tetracyano benzene eutectic crystal provided by the application increases the solid melting point of the organic compound from 133.39 DEG C to 162.23 DEG C without changing the covalent bond of the compound, enhances the thermal stability, and meanwhile, the fluorescence emission color, the fluorescence lifetime and the quantum yield are obviously changed.

The application provides a 2-amino terephthalic acid dimethyl ester eutectic crystal as well as a preparation method and application thereof, the eutectic crystal is of a triclinic system, a space group is, a cell parameter is, alpha = 100.928 (2) °, beta = 98.038 (2) °, gamma = 106.164 (2) °, and a cell volume is 0. 734 0 (3) nm3. The 2-amino terephthalic acid dimethyl ester-tetracyano benzene eutectic crystal provided by the application increases the solid melting point of the organic compound from 133.39 DEG C to 161.80 DEG C without changing the covalent bond of the compound, enhances the thermal stability, and meanwhile, the fluorescence emission color, the fluorescence lifetime and the quantum yield are all changed.

The application relates to a sodium supplement, a preparation method of the sodium supplement, a sodium supplement positive electrode and a preparation method of the sodium supplement positive electrode and a sodium ion battery. x MO4, wherein x is 3-4.5, the M comprises a first element, the first element is any one or a combination of at least two of Co, Fe, Mn, Cr, Ti, V, Zr, Mo or W; and the sodium supplement is a triclinic crystal structure. The sodium supplement comprises a triclinic crystal structure of Na x MO4, the crystal structure of the sodium supplement is unstable, is easy to decompose at a low voltage, can be matched with most positive electrode materials, the decomposition product is an oxide, has no negative effect on the positive electrode material and has a high theoretical specific capacity, therefore, the sodium supplement is a high-efficiency sodium supplement, has good compatibility with a sodium ion positive electrode active material, and can improve the capacity and cycle stability of the sodium ion battery. x MO4 can be used as a high-efficiency sodium supplement and has good compatibility with a sodium ion positive electrode active material, thereby improving the capacity and cycle stability of the sodium ion battery.

The application provides 4-aminoisophthalic acid dimethyl ester-tetracyano benzene eutectic, a preparation method and application thereof, the 4-aminoisophthalic acid dimethyl ester-tetracyano benzene eutectic is triclinic system, the space group is, the cell parameter is, alpha = 116.628 (2) °, beta = 99.297 (2) °, gamma = 100.912 (2) °, the cell volume is the 4-aminoisophthalic acid dimethyl ester-tetracyano benzene eutectic provided by the application improves the solid melting point of 4-aminoisophthalic acid dimethyl ester organic compound without changing the covalent bond of the compound, enhances the thermal stability, and realizes the regulation of fluorescence emission performance.

This invention provides a tetrathiofulvalene tetrabenzaldehyde Schiff base cage compound, the molecular formula of which is C2. 126 H 108 N 16 S 12 The molecular weight is 2231.08, and the unit cell parameters are: a=17.0810(12)Å, b=19.3138(13)Å, c=22.0054(4)Å; α=104.811(2)°, β=101.466(2)°, γ=101.348(2)°, V=6639.3(8)Å. 3 The compound has a Z=2 crystal, space group P-1, and belongs to the triclinic crystal system. It exhibits a wide ultraviolet transmission cutoff edge above 400 nm and a significant near-infrared absorption rate. Near-infrared photothermal conversion performance tests show that the crystal can stably reach above 160°C in 40 seconds during 10 light-cooling cycles, demonstrating excellent photothermal conversion performance. This crystal is obtained through a liquid-phase diffusion method, where it is allowed to diffuse freely by layering and allowing it to stand still. This method offers advantages such as simple operation, the use of common organic raw materials, a short growth cycle, and stable physicochemical properties, making it suitable for various photothermal conversion materials.

The invention provides an organic-inorganic hybrid one-dimensional tetranuclear zinc crystal material and a preparation method thereof, and belongs to the field of organic-inorganic hybrid materials and crystal materials. The chemical formula of the organic-inorganic hybrid one-dimensional tetranuclear zinc crystal material is [Zn (C12H8N2) (H2O)] 2 [Zn (C12H8N2) (C3H2O4) (H2O) 2] 2 (NO3) 4. 4H2O, the organic-inorganic hybrid one-dimensional tetranuclear zinc crystal material belongs to a triclinic system, and the space group is P1. A hydrothermal synthesis method comprises the following steps: adding phenanthroline dissolved in absolute ethyl alcohol into zinc nitrate, malonic acid and water, adjusting the pH value to a proper value by using a sodium hydroxide solution under a stirring state, and transferring the mixed solution into a closed system for hydrothermal reaction. The crystal material has strong fluorescence emission at the wavelength of 480 nm under the excitation of light with the wavelength of 320 nm, and can be used as a potential high-quality luminescent material.

The application discloses a coenzyme I crystal form and application thereof, relates to the technical field of nicotinamide adenine dinucleotide preparation, and belongs to the technical field of nicotinamide adenine dinucleotide preparation. The coenzyme I crystal form is a triclinic crystal system and has a Pl or Pl space group. The crystal lattice constant is a = 8.5894 Å, b = 8.8623 Å, c = 11.2009 Å, alpha = 109.803 DEG, beta = 90.697 DEG and gamma = 103.709 DEG. The coenzyme I crystal form provided by the application is a hydrate crystal form with high crystallinity, has good solid-state properties, the content of an effective component is obviously higher than that of a freeze-dried raw material sample, the content of maximum single substance and total impurities is obviously lower than that of the freeze-dried raw material sample, and with the prolongation of storage time, the content of maximum single substance and total impurities does not obviously increase after storage for 12 months.

This invention relates to a compound potassium fluoroiodate and a linear birefringent optical crystal of potassium fluoroiodate, as well as their preparation methods and uses. The chemical formula of the compound is KI4O. 10 F, with a molecular weight of 725.70, was prepared by hydrothermal or room temperature solution methods. This compound belongs to the triclinic crystal system, space group P1(_), with cell parameters a=7.1685(3) Å, b=7.4967(3) Å, and c=10.9225(4) Å. α =102.823(1)°, β =90.704(1)°, gamma =114.431(1)°, Z =2, V=517.50(4)Å 3 The crystal is grown using a hydrothermal method or a room-temperature solution method. It has a low ultraviolet cutoff edge and a large birefringence of 0.133@1064nm. Its excellent performance and good chemical stability make it suitable for fabricating polarizing prisms, phase delay devices, and electro-optic modulation devices for various applications, such as Glan prisms, polarization beam splitters, compensators, optical isolators, circulators, and optical modulators. It plays an important role in the fields of optics and communications.

This invention relates to a europium-based metal-organic framework material constructed based on 4-((3-(pyrazin-2-yl)-1H-pyrazol-1-yl)methyl)benzoic acid ligand, its preparation method, and its applications. The invention pertains to the fields of metal-organic framework materials, luminescent functional materials, and fluorescence sensing technologies. The chemical formula of the europium-based metal-organic framework material prepared by this invention is: [Eu(ppmb)2(NO3)(H2O)2] n ; where ppmb is the ligand after deprotonation of Hppmb; the structure of Hppmb is; the europium-based metal-organic framework material belongs to the triclinic crystal system, space group P-1, and unit cell parameters are a=9.727(4) Å, b=14.197(5) Å, c=25.615(9) Å, α=77.899(1)°, β=86.231(1)°, γ=70.044(1)°, and it is used in the detection of furazolidone.