全取代环戊基六元瓜环晶体制备及其晶体结构研究

研究了对全取代环戊基六元瓜环(CyP6Q6)与结构诱导剂ZnCl2在稀盐酸条件下长的晶体进行X-射线单晶衍射分析.通过实验得到一个新的晶体,其结构表明,晶体属于斜方晶系,空间群为P21/n,a=27.599(7)(A),6=17.393(7)(A),c=18.265(5)(A),α=90.00°,β=93.369(6)°,γ=90.00°,Z=4,R=0.046,其中结构中出现了蜂巢效应并且形成了较大的孔道.     

全取代环戊基五元瓜环与铈(Ⅲ)配合物的合成、晶体结构及应用探索

利用X-射线单晶衍射分析方法测定了全取代环戊基五元瓜环(CyP5Q[5])和稀土金属铈(Ce3+)形成配合物的晶体结构,结果表明:Ce3+与CyP5Q[5]的两个端口配位,配合物空腔包结氯离子形成“分子胶囊”结构.相邻的瓜环通过与[ZnCl4]2-的偶极作用,形成一维超分子链.本文通过对该配合物对七种易挥发有机物的吸附进行研究.     

银离子和六元瓜环改性的硫化镉的表征和催化性能

掺杂金属和使用有机物复合的方法是提高硫化镉光催化性能的有效手段.利用大分子六元瓜环(Cucurbit[6]uril,Q[6])作为改性剂,采用化学沉淀法合成Ag+掺杂的Q[6]/Cd(1-x)AgxS,对产物进行FT-IR,XRD,Uv-vis,PL和SEM等表征,并以结晶紫、罗丹明B和次甲基蓝作为目标降解物测试产物的光催化性能.结果 表明:Ag+掺杂和Q[6]复合都提高了硫化镉的催化性质,催化剂Q[6]/Cd(1-x)AgxS的最佳用量为10 mg,最佳掺杂摩尔分数x为0.25;,对次甲基蓝的催化效果最佳,200 min的催化效率达到99.6;.     

硫源和六元瓜环对硫化镉性质的影响

以硫代硫酸钠和硫脲为硫源,氯化镉为镉源,六元瓜环(Q[6])为修饰剂,采用水热法制备Q[6]/CdS复合光催化剂.利用傅里叶变换红外光谱、X射线粉末衍射和扫描电子显微镜对产物进行结构和形貌表征,考察Q[6]和硫源对产物结构和性能的影响.结果表明,硫源对产物形貌和结构都有影响,Q[6]对硫化镉光催化性能有增强作用,15 mg Q[6]/CdS能使50 mL,6 mg/L的次甲基蓝溶液反应200 min时的降解率达到93.0;以上.     

萘羧酸膦酸铜配合物的合成与表征

本文以萘羧酸膦酸配体(5-pncH₃=(5-phosphono-1-naphthalenecarboxylic acid)和高氯酸铜为原料,在水热条件下自组装得到了一维配合物Cu_0.5(5-pncH₂)(H₂O)_1.5(1)。采用单晶衍射(X-Ray)、元素分析(EA)、红外光谱(FT-IR)、粉末衍射(Powder X-Ray)、热重分析(TG-DTG)对配合物进行晶体结构和热稳定性表征。晶体结构分析表明:该配合物结晶于正交晶系,Pbcm空间群,a=0.667 88(2) nm,b=0.884 14(2) nm,c=4.174 03(9) nm。配合物1的晶体结构中相邻的金属Cu^II离子由配位水分子连接成一维锯齿状无机链。这些相邻的无机链通过萘羧酸膦酸配体上未配位的双重羧基氢键连接成层状结构。热稳定性研究表明,配合物呈现出逐级分解过程,在350 ℃以下能够保持配合物骨架结构的稳定性。     

奥沙拉秦钙配合物的合成、结构及表征

本文通过CaCl2·2H2O与药物奥沙拉秦及辅助配体邻菲罗啉在水热条件下得到了一个新的奥沙拉秦配合物[ Ca(L) (Phen)·4(H2O)]n(H2L=奥沙拉秦=3,3-azo-bis-6-hydroxybenzoic acid)(1).通过元素分析、红外对配合物进行了表征,并利用X单晶射线衍射仪测定了其结构.结构解析表明,配合物1属三斜晶系,空间群P-1,晶胞参数a=0.8001 (3) nm,b=1.1245(4) nm,c=1.5129(6) nm,α=89.450(6)°,β=86.297(6)°,γ=77.633(6)°,V=1.3268(9) nm3,Z=2,F(000) =636,最终偏差因子(对Ⅰ＞2σ(Ⅰ)的衍射点),R1=0.0521,wR2 =0.1538,S=1.045.在该结构中,中心Ca(Ⅱ)离子周围形成了一个稍微扭曲的五角双锥体,分别与一个来自奥沙拉秦配体的羧基氧原子(单齿)、两个邻菲罗啉中的两个N原子和四个水分子配位.     

一种氨基萘磺酸铈配合物的合成、晶体结构和性质

在乙醇/水混合溶剂中合成了一种单核铈配合物[Ce(H2O)2 (phen)2(Ans)3] (phen)·4H2O(1)(其中HAns=4-氨基-1-萘磺酸,phen=邻菲啰啉),并对其进行元素分析、红外光谱、紫外光谱、荧光光谱、热重分析和X-射线单晶衍射等测定.标题配合物属单斜晶系P21/n空间群,a=1.32882(5),b=2.44909(9),c=1.87421 (6) nm,β=9.1214(3) nm,z=4,V=6.0981 (4) nm3,Dc=1.585 g.cm3,μ=0.929 mm-,R1 =0.0612,wR2 =0.1518,S=1.07.配合物中9配位的Ce(Ⅲ)处于畸变的三帽三棱柱配位多面体环境CeN4O5.配位单元[Ce(H2O)2 (phen)2 (Ans)3]与未配位的phen和晶格水通过芳环堆积相互作用和氢键组装形成三维超分子体系.     

一种环状双核钠配合物[Na(H2O)(μ2-Ans)(Phen)]2的合成、晶体结构及其表征

在热乙醇水溶液中,5-氨基萘磺酸(HAns)、邻菲啰啉(phen)和NaOH经回流反应合成了一种新的钠配合物[Na(H2O) (μ2-Ans)(Phen)]2(1),通过元素分析、红外光谱、紫外光谱和热重分析等进行了表征并采用X射线单晶衍射测定了配合物的分子结构.该配合物属单斜晶系,空间群P21/n,a=0.70346(13) nm,b=1.0959(2) nm,c=2.5854(5) nm,β=94.934(4)°,V=1.9858(6)nm3,R=0.0493,ωR=0.1755.结构分析表明,配合物由于磺基μ2模式的桥联配位作用而呈现分立的环状双核结构,并通过芳环堆积作用和分子间氢键扩展为三维超分子体系.此外测试了该配合物的荧光性质.     

双配体锌配合物的合成、结构及其荧光与化感调控性能研究

以对氨基苯甲酸、邻菲罗啉和与Zn(Ⅱ)通过溶剂扩散法得到配合物[Zn(C7H6O2N)(C12H8N2)Cl]浅黄色颗粒状晶体,通过元素分析、红外光谱、TG分析等方法对其进行了表征,并对目标配合物的荧光性质进行了探讨.X-射线单晶衍射分析表明,该配合物晶体属于单斜晶系,空间群为C2/c,晶体结构中丰富的氢键将分子连接成三维无限网络结构.生长调节实验表明:该配合物对水稻种子的萌发生长具有明显的调控作用,表现出低浓度下促进高浓度抑制的整体态势.     

3,5-二氯水杨醛缩异亮氨酸邻菲啰啉铜(Ⅱ)三元配合物的合成与晶体结构表征

采用分步溶液法,在碱性条件下合成出了3,5-二氯水杨醛缩异亮氨酸邻菲啰啉铜(Ⅱ)三元配合物,并培养出[Cu3L3(Phen)3].5H2O单晶(其中H2L=3,5-二氯水杨醛席夫碱缩异亮氨酸),其晶体结构经元素分析,红外光谱及X射线单晶衍射表征.     

A Ternary Supramolecular Self-Assembly Model Based on Cyclopentano Cucurbit[5]uril

Crystallography Reports - This paper reports on the supramolecular self-assembly of cyclopentano cucurbit[5]uril (CyP5Q[5]), L-phenylalanine (L-Phe), and cadmium ions. The crystal structure is...     

Study of Supramolecular Self-Assembly between Cyclopentanocucurbit[6]uril and Lithium and Sodium Ions

Crystallography Reports - Complete substitution of cyclopentyl group, CyP6Q[6], was used as the primary construction element to form a supramolecularly self-assembled body with lithium perchlorate...     

Synthesis and Structural Characterization of Substituted Salicylate Titanocene Complexes: Three Supramolecular Frameworks Determined by Weak Interactions

Abstract  Based on the reaction between Cp₂TiCl₂ and substituted salicylic acids in the presence of β-cyclodextrin polymer (β-CDP), three four-coordinated titanocene complexes [(η⁵-C₅H₅)₂Ti(S,O′)(OCC₆H₄)·(C₆H₆)_0.5] (1), [(η⁵-C₅H₅)₂Ti{(O,O′)(3,5-Cl₂-OCC₆H₂)}] (2) and [(η⁵-C₅H₅)₂Ti{(O,O′)(3,5-(NO₂)₂-OCC₆H₂)}] (3) were synthesized in high yields and their crystal structures have been determined by single-crystal X-ray diffraction. The structure of 1 has a Monoclinic space group P2₁/c with a = 8.313(3) ?, b = 9.960(4) ?, c = 22.330(8) ?, β = 111.856(11)° and Z = 4. The structure of 2 has a Monoclinic space group P2₁/c with a = 8.0577(13) ?, b = 8.9022(14) ?, c = 21.977(4) ?, β = 96.298(3)° and Z = 4. The structure of 3 has a Triclinic space group P-1 with a = 8.1687(11) ?, b = 8.3027(11) ?, c = 12.7164(17) ?, α = 102.930(2)°, β = 100.479(2)°, γ = 95.458(2)° and Z = 2. Each of the complexes exhibits a three-dimensional framework constructed through weak interactions, which are hydrogen bonding, π–π stacking and C–H···π interactions. It was found that the variation of the substituted salicylate ligands affect the weak interactions as well as the specific framework structure that forms. Graphical Abstract  Three four-coordinated titanocene complexes [(η⁵-C₅H₅)₂Ti(S,O′)(OCC₆H₄)·(C₆H₆)_0.5] (1), [(η⁵-C₅H₅)₂Ti{(O,O′)(3,5-Cl₂-OCC₆H₂)}] (2) and [(η⁵-C₅H₅)₂Ti{(O,O′)(3,5-(NO₂)₂-OCC₆H₂)}] (3) were synthesized in high yields, each of the complexes exhibits a three-dimensional framework constructed through weak interactions. It was found that simple variation of the substituted salicylate ligands affect the weak interactions as well as the specific framework structure that forms. .     

Synthesis and Characterization of Polyphenothiazene Iodine Complexes

Abstract

N-methyl 3,6 dibromophenothiazene has been polymerized by using a nickel complex-assisted Grignard coupling. Vapor phase iodine doping of the organometallic polymerized material led to a conductivity increase of 10^?11 ohm^?1 cm^?1 to 10^?5 ohm cm^?l at room temperature. The complex thus formed exhibited a semiconductor behavior with a thermal activation energy of 0.1 eV and a strong electronic IR absorbance from 4000–400 cm^?1. However, the complexed polymer could be dissolved in liquid I₂ and cast into films with air stable, room temperature conductivities as high as 1 ohm^?l cm^?l. The mechanisms that could give rise to these differences in behavior will be discussed.     

Synthesis and crystal structure of new phosphate NaFe 4 2+ Fe 3 3+ [PO4]6

New sodium iron orthophosphate NaFe ₄ ²⁺ Fe ₃ ³⁺ [PO₄]₆ was synthesized by the hydrothermal method. The crystal structure (sp. gr. $P\bar 1$ ) was established by the heavy-atom method, with the exact chemical formula of the compound being unknown; R _hkl = 0.0492, R _whkl = 0.0544, S = 0.52. The new compound is analogous to iron phosphate Fe ₃ ²⁺ Fe ₄ ³⁺ [PO₄]₆ studied earlier. However, these two compounds differ in the Fe²⁺ and Fe³⁺ contents, because Na⁺ ions in the new compound are located at the centers of symmetry not occupied earlier.     

异构体复晶-席夫碱锌配合物的合成、晶体结构及表征

以2-乙酰吡啶、高氯酸锌和2-氨基乙基-二(3-氨基丙基)胺为原料在甲醇介质中反应制备全氮配位的异构体复晶-席夫碱锌配合物,用元素分析、红外光谱、核磁共振氢谱和热重分析对其进行了表征,用X射线单晶衍射仪测定其晶体结构,结果表明该异构体复晶-席夫碱锌配合物属于单斜晶系,P2(1)/c空间群.晶胞参数分别为a=1.8517(6) nm,b=1.5341(5) nm,c= 1.6061(5) nm,α=γ=90 °,β=90.743(6) °,V=4.562(2) nm3 ;Dc=1.577 g/cm3;Z= 4, F(000)=2240; μ=1.361 mm-1.