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1.
In the present paper, on the basis of our work. advances in study of the catalysts of polyacid-type hydrotalcite-like are reported and reviewed. Using polyoxometalates (POM) as pillaring species and layered double hydroxides (LDH) as host matter, a new class of catalytic materials, LDHPOM, has been synthesized by five different methods. Their acidic and oxidative catalytic properties have been investigated by several research groups. The above mentioned information is given in this review. 相似文献
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杂多化合物的酸催化特性及其在有机合成反应中的应用 总被引:12,自引:0,他引:12
杂多化合物在各个研究领域中的实际应用日趋广泛。特别是在催化领域内,对杂多化合物催化性能和研究越来越引起人们的关注。本文对在均相和非均相体系中杂多化合物的酸催化的最新研究成果和应用进行了综述,对杂多化合物的酸行为进行了简要的概括,并介绍了作者在这方面的工作。 相似文献
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A novel organic/inorganic compound [Hbenzimi]4[(benzimi)2Mo8O26] · 2H2O (1) has been prepared hydrothermally and characterized by elemental analyses, i.r., x.p.s., t.g. and single crystal X-ray diffraction.
The single crystal X-ray diffraction analysis reveals that compound (1) consists of the [Mo8O26]4− cluster as the structural motif covalently linked by benzimidazole molecules and protonated benzimidazole molecules as charge
compensation cations. It is interesting that the benzimidazole molecules were synthesized from 1,2-phenylenediamine and oxalic
acid. The [Mo8O26]4− polyoxoanions and organic ligands in compound (1) interact with each other via extensive hydrogen bonds to form a three-dimensional supramolecular framework. 相似文献
5.
Wang Li Duan Liying Wang Enbo Xiao Dongrong Li Yangguang Lan Yang Xu Lin Hu Changwen 《Transition Metal Chemistry》2004,29(2):212-215
The novel complex, Co(H2O)5[Co(2,6-pydc)2] (1) has been prepared in aqueous solution and characterized by single-crystal X-ray diffraction, elemental analyses and i.r. spectra. X-ray structural analysis revealed that three novel compounds each possess both – stacking and hydrogen-bonding interaction three-dimensional (3-D) networks. 相似文献
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杂多配合物抗流感病毒活性 总被引:8,自引:1,他引:8
杂多配合物抗流感病毒活性刘杰王丽君**周云山王恩波*(东北师范大学化学系长春130024;**吉林医学院吉林)关键词杂多化合物,流感病毒,活性1997-07-09收稿,1997-09-01修回国家自然科学基金资助课题杂多化合物的药物化学已被广泛关注[... 相似文献
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Three unusual compounds based on polyoxometalate building blocks, [(H2O)5Na2(C6NO2H4)(C6NO2H5)3Ag2][Ag2IMo6O24(H2O)4] x 6.25H2O (1), [(H2O)4Na2(C6NO2H5)6Ag3][IMo6O24] x 6H2O (2), and (C6NO2H6)2[(C6NO2H5)2Ag][Cr(OH)6Mo6O18] x 4H2O (3), have been synthesized and characterized by elemental analysis; IR, XPS, and ESR spectroscopy; TG analysis; and single-crystal X-ray diffraction. Compound 1 is constructed from the cationic two-dimensional (2D) coordination polymer sheets which are constituted of [(H2O)5Na2(C6NO2H4)(C6NO2H5)3Ag2]3+ and anionic [Ag2IMo6O24(H2O)4]3- chains as pillars, forming a three-dimensional (3D) supramolecular framework via weak Ag-O interactions. Compound 2 is composed of the well-defined [IMo6O24]5- building blocks, which are linked through trinuclear Ag-pyridine-3-carboxylic acid, [(C6NO2H5)6Ag3]3+, fragments into a one-dimensional (1D) hybrid chain; adjacent chains are further connected by sodium cations to yield a novel 2D network. Compound 3 has a 1D chainlike structure constructed from [Cr(OH)6Mo6O18]3- building blocks and Ag-pyridine-4-carboxylic acid coordination units. The crystal data for these compounds are the following: 1, triclinic, P1, a = 13.280(3) A, b = 13.641(3) A, c = 16.356(3) A, alpha = 89.68(3) degrees, beta = 88.31(3) degrees, gamma = 75.87(3) degrees, Z = 2; 2, triclinic, P1, a = 11.978(2) A, b = 12.008(2) A, c = 13.607(3) A, alpha = 116.14(3) degrees, beta = 108.85(3) degrees, gamma = 93.86(3) degrees, Z = 1; 3, triclinic, P1, a = 10.458(2) A, b = 10.644(2) A, c = 12.295(3) A, alpha = 97.40(3) degrees, beta = 112.38(3) degrees, gamma = 113.59(3) degrees, Z = 1. 相似文献
10.
Wang Shutao Wang Enbo Hou Yu Li Yangguang Wang Li Yuan Mei Hu Changwen 《Transition Metal Chemistry》2003,28(6):616-620
A novel organic/inorganic hybrid molybdenum phosphate, [NH3(CH2CH2)2NH3]3[NH3(CH2CH2)2NH2]Na5-[Mo6O12(OH)3(PO4)(HPO4)3]2·4H2O (1), involving molybdenum presented in V oxidation, has been hydrothermally prepared and characterized by elemental analysis, i.r., u.v.–vis., x.p.s., t.g. and single crystal X-ray diffraction. The structure of the title compound (1) may be considered to consist of two [Mo6O12(OH)3(PO4)(HPO4)3] units bonded together with NaO6 octahedra, forming dimers. Further, these dimers connect with each other through four Na+ cations as bridges, giving rise to novel one-dimensional chain-like skeleton. Piperazines exist among inorganic chains acting as charge balancing cations. 相似文献