Bis-phenol A Cyclophanes: Synthesis, Crystal Structures and Binding Studies

The synthesis and structural characterisation of three new macrocyclicbis-phenol A cyclophane ethers are described. The solid state structuresof two of the cyclophanes were determined by single crystal X-raydiffraction. Cyclophane 3 crystallises in the orthorhombic spacegroup Pbca with unit cell dimensions of a = 11.533(7), b = 29.383(8),c = 14.927(8) Å and cyclophane 4 in the monoclinic spacegroup P2₁/n with cell dimensions of a = 11.585(4), b = 11.839(2), c = 18.866(2) Å, = 94.48(2)°.The X-ray crystalstructures reveal distorted conformations, thus supporting the weak bindingof quats in solution observed by the NMR studies. In the crystalline state bothmacrocycles were found to form self-complementary dimers held together byweak intermolecular - and CH- interactions. The bindingbehaviour towards a series of tetralkylammonium cations was determinedby ¹H NMR titration in CDCl₃ solution. The interactions between the hosts and the quats were clearly detectable but too weak to be translated into meaningful equilibrium constants.     

DDQ/PPh3催化的N-苯甲酰苯胺衍生物中间体的有效合成及晶体结构

在DDQ/PPh₃作用下,以2-异丙基苯甲酸或水杨酸为原料,在温和条件下以较高的收率合成、分离得到两个化合物(2)和(3)。化合物(2)和(3)与苯胺在氯仿中加热回流可分别转化为酰胺类化合物(4)和(5)。所有化合物通过元素分析、质谱、核磁共振进行了表征,并解析了化合物(2)和(3)的X-衍射单晶结构。化合物1,2-二(2-异丙基苯甲酸)-2,3-二氰-5,6-二氯苯(2)晶体属单斜晶系,空间群P2₁/c,其晶胞参数为：a=1.2875(3)nm,b=1.5186(2)nm,c=1.5726(3)nm,β=122.23(3)°,V=2.6010(1)nm³,D_c=1.331g·cm^-3,Z=4,F(000)=1080,R₁=0.0572,wR₂=0.1260;化合物1,2-二(2-羟基苯甲酸)-2,3-二氰-5,6-二氯苯(3)晶体属三斜晶系,空间群P1,其晶胞参数为：a=0.87776(16)nm,b=1.13111(15)nm,c=1.18639(17)nm,α=69.290(2)°,β=89.409(3)°,γ=67.878(2)°,V=1.0104(3)nm³,D_c=1.542g·cm^-3,Z=2,F(000)=476,R₁=0.0383,wR₂=0.0931。强π-π堆积作用和分子间氢键将化合物(2)和(3)组装成稳定的三维结构。     

DDQ/PPh_3催化的N-苯甲酰苯胺衍生物中间体的有效合成及晶体结构(英文)

在DDQ/PPh3作用下,以2-异丙基苯甲酸或水杨酸为原料,在温和条件下以较高的收率合成、分离得到两个化合物(2)和(3)。化合物(2)和(3)与苯胺在氯仿中加热回流可分别转化为酰胺类化合物(4)和(5)。所有化合物通过元素分析、质谱、核磁共振进行了表征,并解析了化合物(2)和(3)的X-衍射单晶结构。化合物1,2-二(2-异丙基苯甲酸)-2,3-二氰-5,6-二氯苯(2)晶体属单斜晶系,空间群P21/c,其晶胞参数为:a=1.287 5(3)nm,b=1.518 6(2)nm,c=1.572 6(3)nm,β=122.23(3)°,V=2.601 0(1)nm3,Dc=1.331 g·cm-3,Z=4,F(000)=1 080,R1=0.057 2,wR2=0.126 0;化合物1,2-二(2-羟基苯甲酸)-2,3-二氰-5,6-二氯苯(3)晶体属三斜晶系,空间群P1,其晶胞参数为:a=0.877 76(16)nm,b=1.131 11(15)nm,c=1.186 39(17)nm,α=69.290(2)°,β=89.409(3)°,γ=67.878(2)°,V=1.010 4(3)nm3,Dc=1.542 g·cm-3,Z=2,F(000)=476,R1=0.038 3,wR2=0.093 1。强π-π堆积作用和分子间氢键将化合物(2)和(3)组装成稳定的三维结构。     

Synthesis,Crystal Structures,Lipophilic Properties and Antimicrobial Activity of 5-Pyridylmethylidene-3-rhodanine-carboxyalkyl Acids Derivatives

The constant increase in the resistance of pathogenic bacteria to the commonly used drugs so far makes it necessary to search for new substances with antibacterial activity. Taking up this challenge, we obtained a series of rhodanine-3-carboxyalkyl acid derivatives containing 2- or 3- or 4-pyridinyl moiety at the C-5 position. These compounds were tested for their antibacterial and antifungal activities. They showed activity against Gram-positive bacteria while they were inactive against Gram-negative bacteria and yeast. In order to explain the relationship between the activity of the compounds and their structure, for selected derivatives crystal structures were determined using the X-ray diffraction method. Modeling of the isosurface of electron density was also performed. For all tested compounds their lipophilicity was determined by the RP-TLC method and by calculation methods. On the basis of the carried-out research, it was found that the derivatives with 1.5 N···S electrostatics interactions between the nitrogen atom in the pyridine moiety and the sulfur atom in the rhodanine system showed the highest biological activity.     

新型三噻吩衍生物的合成及其液晶性能

近晶A相;新型三噻吩衍生物的合成及其液晶性能     

Syntheses,Crystal Structures and Bioactivities of Two Isatin Derivatives

The title compounds(Z)-3-(2-(3-chloropyridin-2-yl)hydrazono)indolin-2-one(A) and 7-bromo-(Z)-3-((4-pyridinyl)carboxlichydrazono)-2-indolinone(B) have been synthesized and structurally determined by elemental analysis and single-crystal X-ray diffraction studies.Compound A(C13H8ClN4O) belongs to the orthorhombic crystal system,space group Pca21 with a = 20.799(4),b = 4.9312(10),c = 11.764(2),V = 1206.6(4)3,Mr = 271.68,Dc = 1.496 g/cm3,μ = 0.313 mm-1,F(000) = 556,Z = 4,the final R = 0.0346 and wR = 0.0831 for 2683 observed reflections with I > 2σ(I).Compound B(C14H9BrN4O2) belongs to the triclinic crystal system,space group P1 with a = 6.6834(13),b = 7.0727(14),c = 14.285(3),α = 95.56(3),β = 99.00(3),γ = 102.95(3)°,V = 643.8(2)3,Mr = 345.16,Dc = 1.780 g/cm3,μ = 3.203 mm-1,F(000) = 344,Z = 2,the final R = 0.0487 and wR = 0.1167 for 2334 observed reflections with I > 2σ(I).The preliminary herbicidal bioassay reveals that compounds A and B have some inhibition both in vivo and in vitro against AHAS.     

4,5-Dicyano-1,2,3-Triazole—A Promising Precursor for a New Family of Energetic Compounds and Its Nitrogen-Rich Derivatives: Synthesis and Crystal Structures

The nitrogen-rich compounds and intermediates with structure of monocyclic, bicyclic, and fused rings based on 1,2,3-triazole were synthesized and prepared by using a promising precursor named 4,5-dicyano-1,2,3-triazole, which was obtained by the cyclization reaction of diaminomaleonitrile. Their structure and configurational integrity were assessed by Fourier transform-infrared spectroscopy (FT-IR), mass spectrometry (MS), and elemental analysis (EA). Additionally, fourteen compounds were further confirmed by X-ray single crystal diffraction. Meanwhile, the physical properties of four selected compounds (3·H₂O, 6·H₂O, 10·H₂O, and 16) including thermal stability, detonation parameters, and sensitivity were also estimated. All these compounds could be considered to construct more abundant 1,2,3-triazole-based neutral energetic molecules, salts, and complex compounds, which need to continue study in the future in the field of energetic materials.     

以二亚乙基三胺为模板的链状结构硫酸钬配合物的合成、晶体结构及性质

通过溶剂热技术合成了一种以二亚乙基三胺(dien)为模板的链状结构硫酸钬(H₃dien)[Ho(SO₄)₃(H₂O)₂] (1),并通过X射线分析、红外光谱、元素分析和粉末衍射进行了表征。X射线晶体结构分析,化合物1结晶于单斜晶系,P2₁/c空间群,a=0.660 20(13) nm,b=1.476 7(3) nm,c=1.655 6(3)nm,β=93.313(2)°,V=1.611 4(5) nm³,Z=4。化合物1是由HoO₈多面体和SO₄四面体为建筑单元构建成新颖的单一链状结构。在a轴方向上,配位水分子通过氢键连接相邻的链形成三维超分子结构。有机胺分子镶嵌于链间,在合成化合物1合成过程中,pH值(pH=1.5)起了关键作用。     

含环偶磷氮烷配体的羰基铁衍生物的合成和晶体结构

用Fe3(C0)12与顺-2,4-二(叔丁基胺基)-1,3-二(叔丁基)-1,3,2,4-环偶磷氮烷cis-[P(NHBu-t)NBu-t]2(L)反应,得到两个新的含偶磷氮环的单核羰基铁衍生物:Fe(C0)4[{P(NHBu-t)NBu-t}2](1)和Fe(C0)4[P(NHBu-t)(NBu-t)2P(0)H](2).对它们进行了元素分析,IR和1H NMR谱表征,并用X-ray单晶衍射法测定了晶体结构.1:正交晶系,Pna2(1)空间群,a=1.7038(9)nm,b=0.8856(5)nm,c=3.5659(18)nm,V=5.381(5)nm3,Dc=1.275g/cm3,Z=8.2:单斜晶系,P2(1)/n空间群,a=0.9999(2)nm,b=1.4476(3)nm,c=1.5559(3)nm,β=92.40(3)°,V=2.2504(8)nm3,Dc=1.361g/cm3,Z=4.在两个羰基铁化合物中,配位基偶磷氮烷环以单齿P原子与Fe原子配位.2中,未配位P(Ⅲ)被氧化成具有膦酰基结构[（==）P(O)H]的P(Ⅴ).     

Synthesis and Crystal Structures of Schiff Bases Bearing Ferrocenylphenyl Groups

The Schiff bases bearing ferrocenylphenyl and diferrocenylphenyl groups were synthesized by the reactions of m-ferrocenylaniline with salicylaldehyde or 1, 4-bis (2‘-formylphenyl)-1, 4-dioxabutane. The title compounds were characterized by elemental analysis, IR,^1H NMR and X-ray structural determination.     

取代四甲基环戊二烯基钌羰基化合物的合成及结构

将配体[C₅Me₄HR](R=cyclopentyl,cyclohexyl,ⁿPr)分别与Ru₃(CO)₁₂在二甲苯中加热回流,合成了3个新的双核配合物[(η⁵-C₅Me₄R)Ru(CO)(μ-CO)]₂(R=cyclopentyl(1),cyclohexyl(2),ⁿPr(3))。利用红外光谱、元素分析、核磁共振氢谱对它们的结构进行了表征,用X-射线单晶衍射法测定了1和2的结构。     

取代四甲基环戊二烯基钌羰基化合物的合成及结构

将配体[C5Me4HR](R=cyclopentyl,cyclohexyl,nPr)分别与Ru3(CO)12在二甲苯中加热回流,合成了3个新的双核配合物[(η5-C5Me4R)Ru(CO)(μ-CO)]2(R=cyclopentyl(1),cyclohexyl(2),nPr(3))。利用红外光谱、元素分析、核磁共振氢谱对它们的结构进行了表征,用X-射线单晶衍射法测定了1和2的结构。     

在线性壳聚糖膜内原位还原制备银纳米粒子及银单晶体

采用光还原方法，在线性壳聚糖膜内原位还原获得球形银粒子(粒径10～30 nm)和外观呈三角形、六边形的银单晶体(边长200～2000 nm)；采用电化学方法，在壳聚糖膜内制备了球形银纳米粒子，粒径为5～8 nm.用透射电子显微镜(TEM)、扫描电子显微镜(SEM)、红外光谱(IR)和X射线衍射(XRD)等测试技术对壳聚糖/银复合物进行了表征，对光还原过程中银晶体结构由多晶到单晶的转变原因进行了初步的分析和探讨.     

Synthesis of Functionalized 2,3,4,5-Tetraphenylsilole Derivatives Through Hydrosilylation and Their Crystal Structures

A series of new functionalized 2,3,4,5-tetraphenylsiloles were successfully synthesized in good yields by hydrosilylation reaction of 1-methyl-2,3,4,5-tetraphenyl-1H-silole with p-ethynyl benzene derivatives. This synthesis provides a convenient method of introducing reactive electron-withdrawing or electro–donating groups into siloles. All new siloles show aggregation-induced emission (AIE) effects.     

Crystal structures of the La3AgSnSe7 and R3Ag1−δSnS7 (R=La, Ce; δ=0.18−0.19) compounds

The crystal structures of new quaternary compounds La₃AgSnSe₇ (space group P6₃, Pearson symbol hP24, a=1.0805(4) nm, c=0.6245(1) nm, R1=0.0315), La₃Ag_0.82SnS₇ (space group P6₃, Pearson symbol hP23.64, a=1.0399(1) nm, c=0.6016(1) nm, R1=0.0149) and Ce₃Ag_0.81SnS₇ (space group P6₃, Pearson symbol hP23.62, a=1.0300(1) nm, c=0.6002(1) nm, R1=0.0151) were determined by means of X-ray single crystal diffraction. Structural investigations of the R₃Ag_1−δSnS₇ (R=La, Ce; δ=0.18-0.19(1)) compounds at 450 and 530 K were performed. Low temperature data (12 K) for Ce₃Ag_0.81SnS₇ were also collected. The nearest neighbours of the La(Ce), Ag and Sn atoms are exclusively Se(S) atoms. The latter form distorted trigonal prisms around the La(Ce) atoms, and distorted tetrahedrons around the Sn atoms. The Ag (Ag1) atoms have triangular surroundings: they are located very close to the planes built of three Se(S) atoms. The Ag2 atoms in the structures of the La₃Ag_0.82SnS₇, Ce₃Ag_0.81SnS₇ compounds are located practically in the centres of trigonal antiprisms. The pseudo-potentials determined through the Ag atoms show relatively low barrier between two nearest positions which decreases when temperature rises.     

The Synthesis, Reaction and Crystal Structures of Ethyltetramethylcyclopentadienylruthenium Compounds

Pentamethylcyclopentadienyl-trimethylphosphine-metal compounds play an important role in the activation studies of saturated hydrocarbons. A method to synthesize ethyltetramethylruthenium compounds was established, which started from the reaction of RuCl_3. H_2O with ethyltetramethylcyclopentadiene to give a dimer compound of 2. When 2 was reacted with different amounts of trimethylphosphine, compounds 3 [C_5Me_4EtRu(PMe_3)Cl_2] and 4 [(C_5Me_4Et)Ru(PMe_3)_2Cl] were obtained. Compound 3 is a 17-electron species which is in formula similar to Bergman's Ir compound used in hydrocarbon activation reaction, but might be more reactive because of its unsaturated electron structure. The crystal structure analysis of compounds 2, 3 and 4, showed that the ruthenium atom was coordinated in a "threeleg-piano-stool" geometry in all the three compounds. The Ru—Cl bond in 3 and 4 was lengthened, making it labile to other substitution reactions.     

新型含吡唑基的查尔酮的合成、表征及晶体结构

以2种1-苯基-3-甲基-5-对甲苯氧基-吡唑-4-甲醛为原料, 在强碱条件下与苯乙酮(取代苯乙酮)发生羟醛缩合, 高产率地合成出10种新型含吡唑基的查尔酮. 化合物的结构经元素分析, IR和¹H NMR确认. 并用X射线衍射法测定了化合物4c的晶体结构. 化合物4c属三斜晶系, 空间群P-1, 晶胞参数: a＝1.0225(2) nm, b＝1.4263(3) nm, c＝1.6718(3) nm, α＝110.32(3)°, β＝106.30(3)°, γ＝98.11(3)°, M_r＝428.90, V＝2.1159(7) nm³, D_c＝1.346 Mg/m³, Z＝2, F(000)＝896.     

桥联8-氨基喹啉衍生物及其锆配合物的合成及结构

以8-氨基喹啉和8-氨基喹哪啶为原料,通过锂化再与二甲基二氯硅烷反应,分别得到对称的桥联配体Me2Si[NH(C9H6N)]2(1a),Me2Si[NCH3(C9H5N)]2(1b)。1a和1b分别与2倍物质的量的正丁基锂反应,然后与ZrCl4作用得到2种配位模式不同的硅桥联取代8-氨基喹啉锆配合物Zr{Me2Si[N(C9H6N)]2}2(2)和Zr{Me2Si[NCH3(C9H5N)]2}Cl2(3)。化合物1~3通过1H NMR、13C NMR和元素分析进行表征,2和3通过X-射线单晶衍射确定其晶体结构。结果表明配合物2的中心Zr原子与8个N原子配位,属于变形十二面体结构,单晶属于三斜晶系;配合物3的中心Zr原子与4个N原子和2个Cl原子配位,属于变形八面体,单晶属于正交晶系。     

桥联8-氨基喹啉衍生物及其锆化合物的合成及结构

以8-氨基喹啉和8-喹哪啶为原料,通过锂化再与二甲基二氯硅烷反应,分别得到对称的桥联配体Me₂Si[NH（C₉H₆N）]₂（1a）,Me₂Si[NCH₃（C₉H₅N）]₂（1b）。1a和1b分别与2倍物质的量的正丁基锂反应,然后与ZrCl₄作用得到2种配位模式不同的硅桥联取代8-氨基喹啉锆化合物Zr{Me₂Si[N（C₉H₆N）]₂}₂（2）和Zr{Me₂Si[NCH₃（C₉H₅N）]₂}Cl₂（3）。化合物1~3通过¹H NMR、¹³C NMR和元素分析进行表征,2和3通过X-射线单晶衍射确定其晶体结构。结果表明化合物2的中心Zr原子与8个N原子配位,属于变形十二面体结构,单晶属于三斜晶系;化合物3的中心Zr原子与4个N原子和2个Cl原子配位,属于变形八面体,单晶属于正交晶系。