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1.
A new lead(Ⅱ) iodide coordination polymer [(npq)(PbI3)]n1 (npq = N-propyl- quinolinium) has been synthesized in the presence of npq as structure-directing reagent (SDA). Compound 1 crystallizes in the orthorhombic system, space group Pbca, with a = 19.158(4), b = 7.9909(16), c = 22.929(5) A, V = 3510.2(12) A3, Z = 8, Dc = 2.877 g/cm3, F(000) = 2672, C12H1413NPb, Mr= 760.14, μ(MoKα) = 14.872 mm-1, the final R = 0.0431 and wR = 0.1021 for 3678 observed reflections with Ⅰ 〉 2σ(Ⅰ). Structure determination indicates that the [PbI3]^-n infinite chains in each unit cell shape the sketch of 1, which could be described as the result of face-sharing distorted PbI6 octahedra running along the b axis. Electrostatic interaction between conjugated organic counter-cations and inorganic moieties presents and contributes to the crystal packing. 1 was further characterized with IR and elemental analysis. Based on the crystal structure data, quantum chemical calculation with DFT method was used to reveal the electronic structure and optical property of 1.  相似文献   

2.
A new lead(Ⅱ) iodide coordination polymer [(npq)(PbI3)]n 1 (npq = N-propyl- quinolinium) has been synthesized in the presence of npq as structure-directing reagent (SDA). Compound 1 crystallizes in the orthorhombic system, space group Pbca, with a = 19.158(4), b = 7.9909(16), c = 22.929(5) (A), V = 3510.2(12) (A)3, Z = 8, Dc = 2.877 g/cm3, F(000) = 2672, C12H14I3NPb, Mr = 760.14, μ(MoKα) = 14.872 mm-1, the final R = 0.0431 and wR = 0.1021 for 3678 observed reflections with I>2σ(I). Structure determination indicates that the [PbI3]-n infinite chains in each unit cell shape the sketch of 1, which could be described as the result of face-sharing distorted PbI6 octahedra running along the b axis. Electrostatic interaction between conjugated organic counter-cations and inorganic moieties presents and contributes to the crystal packing. 1 was further characterized with IR and elemental analysis. Based on the crystal structure data, quantum chemical calculation with DFT method was used to reveal the electronic structure and optical property of 1.  相似文献   

3.
4.
An interesting T4(2)5(2) water tape formed by fused cyclic water pentamers and tetramer was self-assembled in a new inorganic host [Ni(L)(phen)2]·5H2O (L = L-cysteic acid) and characterized by X-ray diffraction. Each [Ni(L)(phen)2] molecule crystallizes with five water molecules with a molecular formula of [Ni(L)(phen)2]·5H2O. The T4(2)5(2) water tape and [Ni(L)(phen)2] molecules assemble into a network of water tapes sandwiched between [Ni(L)- (phen)2] tapes. The network is stabilized by π-π stacking between [Ni(L)(phen)2] molecules and three types of hydrogen-bonding interactions between [Ni(L)(phen)2] molecules, water molecules, and water and [Ni(L)(phen)2] molecules.  相似文献   

5.
笼型倍半硅氧烷(POSS)是一种由si-O-si键构成的高度对称笼型结构、端基具有极高的可设计性及高反应性新型有机一无机杂化材料,空间尺寸1~3nm;选取带有特定结构的光、电、磁等特性单元,利用活性聚合的方法可制得不同形状的POSS-Polymer杂化材料,通过溶剂、热、电、纳米印刷等方法“梳理”分子链结构,使之成为长程有序的纳米序列结构材料,获取具有预期结构和功能特性的高分子实体。本文从分子自组装的角度对两亲性笼型倍半硅氧烷(POSS)杂化高分子材料进行了介绍,分析了其在生物医药用高分子、智能高分子及低介电高分子材料等多个领域内的最新研究进展,并对今后的发展做了相关的预测与展望。  相似文献   

6.
The Co(II) complex I and ammonium salt II were synthesized from the direct reaction of 1,2-ethylenediamine and cobaltous acetate tetrahydrate and manganese acetate tetrahydrate in anhydrous ethanol. Treatment of N,N'-bis(salicylidene)ethylenediamine with Cu(OAc)2·H2O results in the formation of Cu(II) complex III. C14H37CoNaO8 (I): triclinic, space group P1, a = 8.6296(12), b = 12.0291(17), c = 12.1108(17) A, α = 75.335(2), β = 69.991(2), γ = 72.248(2)°, V= 1109.4(3) A3, Z = 2, ρcaloa = 1.342 g/cm3, the final R= 0.0342 for 4817 observed reflections with I 〉 2σ(I) and Rw = 0.1263 for all data. C6H16N204 (II): space group P1, a = 5.5513(10), b = 5.5589(11), c = 7.4437(14) A, α = 94.332(4), β = 104.497(4), γ = 103.487(4)°,V= 214.06(7) A3, Z = 1, ρcalcd = 1.398 g/cm3, the final R = 0.0431 for 829 observed reflections with I〉 2σ(I) and Rw = 0.1263 for all data. C14H37CuN40 (III), space group P21/n, a = 9.050(9), b = 18.434(17), c = 11.659(11) A, β = 107.134(19)°, V= 1859(3) A3, Z = 4, ρcalcd =1.443 g/cm3, the final R = 0.0616 for 3308 observed reflections (O 〉 2σ(I)) and Rw = 0.1229 for all data. Their structures were all determined by X-ray diffraction, elemental analysis and IR.  相似文献   

7.
The reaction of 2,6-diformyl-4-methylphenol, ethylenediamine and Cu(Ⅱ) in the proportion of 3:2:2 yields a new tetranuclear copper(Ⅱ) complex, [Cu2L]2(ClO4)2.2H2O(H3L= N,N'-bis(4-(3'-formyl-5'-methylsalicyclidene)iminoethyl)-4-methyl-2,6-bimethyliminophenol). The complex has been characterized by ES-MS, IR and X-ray diffraction analysis, and its crystal crystallizes in the triclinic system, space group P1 with a = 10.8673(11), b = 12.0829(12), c = 14.4834(15) А, α= 111.946(2), β= 105.828(2), γ = 99.583(2)°,V= 1618.5(3) А^3, Dc = 1.605 g/cm^3, Z = 2, Mr = 1564.26, F(000) = 800.0,μ(MoKa) = 1.460/mm, S = 1.063, R = 0.0612 and wR = 0.1163 for 6245 observed reflections (I 〉 2σ(I)). The complex is a dimer of dinuclear copper(Ⅱ) acylic enantiomorph subunit [Cu2L]ClO4.H_2O, held together by π…π weak coordination and hydrogen bonding interactions. In addition, the π…π interactions related to phenyl moieties as well as CH=N…π interactions were also found to stabilize the supramolecular architectures in the solid state.  相似文献   

8.
在80℃、无溶剂条件下,以苯磺酸钐为催化剂,芳香醛、β-酮酯、N-取代的(硫)脲三组分"一锅法"缩合,较短的反应时间内合成了产率较高的N1-取代的3,4-二氢嘧啶酮衍生物。催化剂至少能重复使用三次。产品结构经IR,1H/13C NMR,元素分析和X-射线单晶衍射进行了确证。与已报道的合成方法相比,该方法具有原料和催化剂用量少,产率高,方法绿色等优点。  相似文献   

9.
A metal-organic coordination compound formulated as [Cu(MOPIP)(BDC)]n·0.5n(H2O) 1 (MOPIP - 2-(4-methoxyphenyl)-1H-imidazo[4,5-f][1,10] phenanthroline, BDC = 1,4-benze Nedicarboxylate) has been hydrothermally synthesized and structurally characterized by elemental analysis, thermogravimetric analysis, IR spectrum, and single-crystal X-ray diffraction. The title compound crystallizes in the triclinic system, space group P1^-, with a = 8.872(5), b = 11.163(6), c = 12.589(6)A, α = 94.687(7), β = 99.930(6), γ = 103.074(7)°, V = 1186.7(12)A^3, C28H19CuN4O5.5, Mr= 563.01, Dc = 1.576 g/cm^3,μ(MoKa) = 0.973 mm^-1, F(000) = 576, Z = 2, the final R = 0.0607 and wR = 0.1618 for 3419 observed reflections (I 〉 2σ(I)).  相似文献   

10.
A novel 3D polymer 1 (C26H22CoN4O4, Mr = 513.41) constructed from H2C4BIm (2,2'-(1,4-butanediyl)bis(1H-benzimidazole)], 1,3-bdc (1,3-benzenedicarboxylate) and Co(II) has been successfully synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction analysis. The crystal belongs to the tetragonal system, space group I-42d with a = 24.315(5), b = 24.315(5), c = 8.343(2), V = 4933(2)3, Z = 8, Dc = 1.383 g/cm3, μ(MoKα) = 0.735 mm-1, F(000) = 2120, S = 1.156, the final R = 0.0596 and wR = 0.1346 for 1529 reflections with I > 2σ(I). Complex 1 contains 1D chains which are connected by extensive hydrogen-bonding interactions to form the 2D folded layer and 3D framework, which also stabilize the structure.  相似文献   

11.
12.
A new two-dimensional Cd(Ⅱ) coordination polymer, [Cd(2,5-pdch)(H2O)]n·2n(ClO4)·nH2O (2,5-pdch = pyridine-2,5-dicarbohydrazide), was prepared and characterized by elemental analysis, IR spectra and single-crystal X-ray diffraction analysis. The crystal belongs to monoclinic, space group P21/c with a = 10.905(2), b = 11.602(1), c = 15.034(2) A, β = 117.794 (10°, V = 1682.8(4A3, Z = 4, C7H13CdCl2NsO12, Mr = 542.52, Dc = 2.141 g/cm^3,/μ = 1.691 mm^-1, F(000) = 1072, 2(MoKa) = 0.71073A, the final R = 0.0608 and wR = 0.1329 for 2972 observed reflections with I 〉 2σ(I). Single-crystal X-ray diffraction analysis reveals that the Cd(Ⅱ) atom displays a distorted pentagonal-bipyramidal geometry coordinated by three N atoms and three O atoms from three different 2,5-pdch ligands, and one water molecule. Interestingly, each two Cd(Ⅱ) atoms are bridged by two carbohydrazide groups of the 2,5-pdch ligands to form a dimeric unit, and such dimeric units are further connected by the 2,5-pdch ligand to generate a two-dimensional (4,4)-network.  相似文献   

13.
制备了含有H4SiW12O40和双偶极Ru(Ⅱ)配合物交替层的一个新颖静电自组装多层膜.用紫外可见光谱、循环伏安学、原子力显微镜对薄膜进行了表征和性质研究.结果表明:膜沉积平稳、均匀,所制得的薄膜具有较好的电化学活性.AFM图像表明钌(Ⅱ)配合物和H4SiW12O40层具有明显不同的微区结构.  相似文献   

14.
A new lead(Ⅱ) carboxylate-sulfonate has been hydrothermally synthesized and characterized by X-ray single-crystal and elemental analyses. It crystallizes in triclinic, space group P, with a = 8.1573(6), b = 9.4663(7), c = 12.7488(9) , α = 89.2320(10), β = 80.7380(10), γ = 77.9760(10)°, Z = 2, V = 950.10(12) 3, Mr = 599.57, Dc = 2.096 g/cm3, μ = 9.032 mm-1, F(000) = 572, the final R = 0.0412 and wR = 0.1035. It has a 1D chain structure, and the Pb(Ⅱ) is six-coordinated. Two PbO6 polyhedra are interconnected via edge-sharing into a two-core unit. Such units are further interconnected by 3-sulfonato-benzoic acids into 1D chains which are linked by hydrogen bonds into a layer structure. The 4,4'-bipyridines are located at the interlayer space and link the layers into a supramolecular structure by π-π stacking interactions.  相似文献   

15.
Various functionalized asymmetrical biaryls can be synthesized in high to excellent yields via coupling reaction of aryl iodides or bromides with NaBPh4 catalyzed by MCM-41-supported sulfur palladium(0)complex.This palladium complex can be easily recovered and reused many times without loss of activity.  相似文献   

16.
蒋晓慧  周丽梅 《有机化学》2004,24(5):563-566
以吡啶和1-溴代正辛烷为原料,制得中间产物a-辛基吡啶,再分别与l,4-二溴丁烷和1,6-二溴己烷反应,得到两种含氮杂环的双子季铵盐表面活性剂,通过定性实验和波谱方法鉴定了其结构,并表征了这两种表面活性剂的表面活性和杀菌活性.结果表明:这两种化合物均有一定的降低水表面张力的能力,以及杀菌活性.  相似文献   

17.
Reacting homochiral (R)-2-methylpiperazine with cobalt sulfate heptahydrate by the solution method in the presence of concentrated sulfuric acid (H2SO4) yielded two coordination compounds (C5H14N2) [CO(H2O)6](SO4)2 (1 and 2). They are polymorphs, but their hydrogen bonds structure differ significantly. Both 1 and 2 crystallize in chiral space group P21 which is related with point group C2, and experimental results suggest that 1 displays ferroelectric behaviors.  相似文献   

18.
A novel palladium(II) complex [(TMEDA)Pd(anca)2].2DMSO (1, TMEDA = N,N,N',N'-tetramethylethylethylenediamine, anca = anthracene-9-carboxylic acid) was synthesized and characterized by single-crystal X-ray diffraction, 1H NMR, UV-Vis and fluorescence spectroscopy. The cell belongs to orthorhombic Aba2 space group with a = 19.698(7), b = 21.045(7) c = 9.062(3) A, Z = 4, V= 3757(2) A3, C40H46N206PdS2, Mr = 821.31, D, = 1.452 g/cm3, F(000) = 1704, the final R = 0.0272, wR = 0.0667 and GOOF = 0.999. Complex 1 exhibits an interesting distorted clip-shaped molecular configuration which is stabilized by intramolecular C-H...O hydrogen bonds. The cells are packed into a 3D supramolecular structure based on the intermolecular C-H...zr interactions which further construct the tubular channels serving as guest molecular channels to include the DMSO solvent molecules inside. Furthermore, the spectroscopic properties of 1 were also investigated.  相似文献   

19.
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