2-巯基吡啶与Cu(I)配合物的合成、晶体结构及光物理性质

利用Cu(I)前体[Cu(CH3CN)4]BF4与配体2-巯基吡啶、邻菲罗啉进行反应,合成了一种新型铜(I)配合物:{[Cu3(py2tH)6](BF4)3.H2O}n。运用X-射线单晶衍射方法确定了其晶体结构。同时,利用现代波谱方法对配合物的光物理性质进行研究。发射光谱显示在632nm处的发射峰属于金属到配体的电荷跃迁,即MLCT。     

荧光材料钴配合物的合成、晶体结构及荧光传感

以5-氨基间苯二甲酸为配体,采用溶剂热法构筑了一个新型的[Co(C_8H_5NO_4)(H_2O)]_n·2H_2O配合物。通过IR、元素分析以及X-射线单晶衍射表征产物的结构。该配合物的中心离子CoII分别与来自四个不同配体的四个羧酸氧原子、一个氨基氮原子和一个水分子上的氧原子配位,形成了六配位CoO_5N的八面体构型。对配合物的荧光性质及荧光传感性能进行了研究,结果表明不同金属离子对配合物荧光强度有不同程度的影响,该配合物可作为荧光传感材料选择性的检测Mn~(2+)。     

A novel Cu(II) Complex of Picolinate and 1,10-Phenanthroline: Preparation,Crystal Structure Determination,Spectroscopic Characterization and Nonlinear Optical Studies

A newly synthesized copper (II) complex of picolinic acid (also known as 2-pyridinecarboxylic acid) and 1,10-phenanthroline, [Cu(pic)₂(phen)]·H₂O, has been prepared, and its crystal structure has been fully characterized by means of X-Ray diffraction method. The spectroscopic and electronic properties have been also investigated by the applying of FT-IR, Raman and UV–Vis spectroscopies. Density functional theory (DFT) calculations have been performed by using hybrid B3LYP level in order to provide a deep understanding on the relation of the structural, spectroscopic and electronic properties with nonlinear optical properties. The intensive interactions between the bonding orbitals of donor O/N atoms and antibonding orbitals of Cu(II) lone pairs confirm crystal structure characterized with distorted octahedron. Each of the parameters such as small energy gap between HOMO and LUMO, high second order perturbation energies, elongation of the conjugated π system and d⁹ electron configuration of Cu(II) ion induce the first static hyperpolarizability (β) parameter of [Cu(pic)₂(phen)]·H₂O.     

配合物[Cu（L）2]ECu’（L）2]·CH3OH·3H2O的合成和结构表征

以邻氯蜷苯磺酸与吡啶-2-甲醛进行缩合得到席夫碱配体（KL）,然后与Cu（AeO）2．H20进行配位反应,得到了席夫碱配合物[Cu（L）2][Cu’（L】2】’CH3OH·3H2O,用面素分析、FT—IR和X-射线单晶衍射进行r表征。结果表明t配合物属]i单斜晶系,P21／c空间群。配合物的一一个独立单元由置个品格水分子、一个晶格甲醇分子和两个不同的单核铜单元构成。有趣的是,这两个荤核铜单元的组成完全相同但配位模式不同,它们均由一个铜离子和两个脱质子的席夫碱配体组成,其中一个瞥核铜单元中的两个磺酸基均参与了配位,另一个则只有一个磺酸基配位。     

2-氨基嘧啶超分子配合物[Cu(2-AP)2(NO3)2]的合成与晶体结构

以2-氨皋嘧啶缩水杨醛席夫碱和硝酸铜为原料,在常温下,用甲醇和水为溶剂合成了配合物[Cu（2,Ap）2（NO3）2]（2-Ap=2,氨基嘧啶）。通过红外光潜、元素分析、X-射线单品衍射对它进行了结构解析和表征,并系统研究了配合物的结构特点。     

Multinuclear Cu(II) Schiff Base Complex as Efficient Catalyst for the Chemical Coupling of CO2 and Epoxides: Synthesis, X-ray Structural Characterization and Catalytic Activity

Abstract  

The synthesis, X-ray structure, spectroscopic and catalytic properties of sterically hindered Schiff-base ligands (L₁H = N-[allylamine]-3,5-di-tert-butyl salicylaldimine, L₂H=N-[2-amino-5-methyl pyridine]-3,5-di-tert-butyl salicylaldimine and L₃H=N-[2-amino-6-methyl pyridine]-3,5-di-tert-butyl salicylaldimine), and their mononuclear Cu(II) complex for L₁H with multinuclear Cu(II) complexes for L₂H and L₃H, were described. The copper(II) complexes of these ligands were synthesized by treating an methanolic solution of the appropriate ligand with an appropriate amount of CuCl₂·2H₂O. The ligands and their copper(II) complexes were characterized by FT-IR, UV–Vis, ¹H-NMR, elemental analysis, measurement of room temperature magnetic moment, and X-ray structural determination. The reaction of the L₂H and L₃H ligands in a 1:1 mol ratio with CuCl₂·2H₂O afforded ionic copper metal(II) complexes in the presence of NEt₃. The Cu(II) metal complexes tested as catalysts for the formation of cyclic organic carbonates from carbon dioxide and liquid epoxides which served as both reactant and solvent. [Cu₃(L₂)₄]Cl₂·CuCl₂ complex which has 5-methyl substituent on the pyridine ring showed high catalytic activity for chemical coupling carbon dioxide with epoxides (propylene oxide (PO), epichlorohydrine (EC) and 1,2-epoxy butane (EB)) selectively.     

三维配位聚合物[Cu2(pda)2(bpp)]的合成和结构

利用间苯二乙酸,1,3-二(4-吡啶)丙烷和硝酸铜在水热条件下反应制备了一种新型三维配位聚合物[Cu2(pda)2(bpp)](1)(H2pda=间苯二乙酸,bpp=1,3-二(4-吡啶基)丙烷)。通过X单晶衍射测定了晶体结构,并用元素分析、红外光谱、热重分析等技术对其进行表征。配合物属单斜晶系,空间群为P2(1)/c,a=24.412(1)nm,b=12.632(5)nmc,=10.076(4)nm,β=95.134(4)°,Z=4。晶体结构分析表明:在配合物1中,铜离子均形成六配位微扭曲八面体,较为特殊的是在双核结构单元中存在着轮浆[Cu2(CH2COO)4]次级单元。这些次级单元通过顺式桥连双齿间苯二已酸的连接形成(4,4)网格二维波浪面。毗邻的波浪网面又通过1,3-二(4-吡啶基)丙烷配体的连接支撑,拓展为复杂的三维网络结构。     

一种平面Pd(Ⅱ)配合物的合成结构以及光催化性质的研究

配合物[Pd(dmphen)CO3]·H2O(dmphen是2,9-二甲基-1,10-菲咯啉)已合成和表征。钯配合物是采用水热合成法制备的,利用X射线单晶衍射法、元素分析、红外等方法对其进行表征。本文以亚甲基蓝(MB)为探针进行了光催化反应对其进行降解,测评了[Pd(dmphen)CO3]·H2O配合物的光催化降解活性。结果表明,在300 W氙灯光源照射下,该配合物对亚甲基蓝光的催化降解有一定效果,亚甲基蓝(MB)的光催化降解率由时间和Pd配合物的参与共同决定。     

3-氨基吡嗪-2-羧酸镍配合物的合成与结构

以3-氨基吡嗪-2-羧酸(3-Hapzac)为配体合成了一个镍的配合物[Ni(3-apzac)_2(H_2O)_2],并利用元素分析、IR以及X射线单晶衍射等手段对配合物进行了表征。在配合物中,配位的水分子、羧基和与氨基都参与形成了氢键,通过强的氢键相互作用使配合物形成了三维超分子网络结构。     

以m-BrPhH_3 IDC为配体构筑的钴配合物的合成、晶体结构和热性能

采用溶剂热法使m-Br Ph H3IDC与Co(Ⅱ)合成了单核配合物:[Co(m-Br Ph H3IDC)2(2H2O)],采用元素分析、红外光谱以及单晶X-ray测试了其分子结构。进一步研究了这个配合物在空气中的热稳定性能。     

均相肟钯配体催化剂的制备及催化Suzuki反应的研究

制备了4-羟基苯乙酮肟钯配体催化剂和2-甲基-4-羟基苯乙酮肟钯配体催化剂。通过FT-IR、UV-Vis、XPS等分析方法对上述催化剂进行了表征,考察了反应条件对催化剂催化性能的影响。实验结果表明,在水/乙醇混合溶剂中、碳酸钾作碱、反应温度为30℃、反应0.5h、催化剂用量为0.25mol‰的钯含量时,催化溴代芳烃与苯硼酸的Suzuki反应产物收率大于90%。     

含吡咯亚胺铜配合物的合成、表征及晶体结构

合成了一种新型含吡咯亚胺铜配合物,用元素分析、红外光谱及X射线单晶衍射对其进行了表征。结构解析表明,每个铜配合物分子含有两个吡咯亚胺配体,每个配体用两个氮原子与中心金属铜离子螯合,每个铜离子均采取平面四边形构型与配体中的四个氮原子配位。     

Synthesis, Crystal Structure, Spectroscopic and Thermal Properties of a Novel Complex of Hydantoin-5-acetic acid with Co(II)

The complex, tetraaqua bis(hydantoin-5-acetato) cobalt(II) was synthesized by the reaction of hydantoin-5-acetic acid and CoCl₂·6H₂O presence of NaHCO₃. The structure of the complex was determined by X-Ray single crystal data the thermal analyses, FT–IR and magnetic susceptibility data are also presented. The monoclinic crystal of the title compound, [Co(C₅H₅N₂O₄)₂(H₂O)₄], lie across centers of inversion in space group P21/c. The complex features a distorted octahedral [CoO₆] coordination with hydantoin-5-acetato and water ligands. The hydantoin-5-acetato anion is bonded to the cobalt(II) ion via its deprotonated carboxylic acid O atom. The complex molecules show three dimensional supramolecular networks by O–H···O and N–H···O interactions.     

IB族金属(铜、银、金)催化硅氢加成反应的研究进展

对近几年IB族金属(铜、银、金)催化不饱和化合物(如丙烯腈、醛或酮类化合物)与氢硅烷的不对称硅氢加成反应的研究进展进行了总结,并对今后的研究提出了建议.     

双金属氰化络合物(DMC)催化剂的合成及应用研究进展

从催化剂的结构、制备工艺、配位体等方面讨论了催化剂合成、催化机理和低不饱和度聚醚的制备方法的研究进展。催化剂的制备工艺及小分子配位体的加入顺序影响催化剂的晶体结构和催化剂的活性。配位体的类型对催化剂活性有显著影响,寻找更有效的配位体是提高催化剂性能的有效途径。     

一种以咪唑衍生物为配体的卡宾银配合物的合成及晶体结构

以咪唑衍生物和氧化银为原料,二氯甲烷为溶剂,常温下反应生成配合物[Ag(DIM)2]BF4,并对合成物的晶体结构进行了研究。X-射线单晶解析结果表明:该晶体属于单斜晶系,空间群C_2/c,a=14.010(18),b=8.303(11),c=14.936(20),α=90.00°,β=93.910(4)°,γ=90.00°,V=1639(4)3,Z=4。     

Synthesis,Structure and Fluorescence Spectra Study of a Supramolecular Zinc(II) Complex

A new structural supramolecular zinc(II) complex (1), [Zn(H₂O)₆]²⁺[Zn(4,4′-bipy)(SO₄)₂(H₂O)₂]^2?[Zn(4,4′-bipy)(SO₄)(H₂O)₃] is synthesized in mixed solvent system at room temperature. The complex was characterized by elemental analysis, IR spectroscopy and single crystal X-ray diffraction. Structural analyses reveal that the complex is crystallized in the triclinic system with P1 space group. Cell parameters: a = 7.3145 (15) Å, b = 11.194 (2) Å, c = 11.442 (2) Å, α = 72.48 (3)°, β = 73.78 (3)°, γ = 83.39 (3)°, V = 857.3 (3) ų. Zn atoms (Zn1, Zn2 and Zn3) are all six-coordinated, however, the coordination environments of them are different. Owning to the abundant intro- and inter- hydrogen bonding interactions, the adjacent molecular units were connected to form a 2D supramolecular chain, and the two adjacent chains were furthermore linked to form a 3D supermolecular network structure via the hydrogen bonds. In addition, it is found that the complex has potential applications as fluorescent-emitting materials due to the strong fluorescence.     

纤维素负载三苯膦-钯复合物催化剂的合成及其对Heck偶联反应的催化性能研究

合成了一种新型的纤维素负载的三苯膦（Cell—OPPh3）,随后与醋酸钯反应生成了纤维素负载的三苯膦一钯复合物（Cell—OPPh3-Pd）催化剂,并对其进行了扫描电镜（SEM）、透射电镜（TEM）、热失重（TG）等分析表征。结果表明,催化刺对空气稳定,可有效催化空气条件下芳基卤和丙烯酸酯的Heck偶联反应。