Syntheses and Crystal Structures of Two New Mercury（Ⅱ） Complexes with Double Betaine Ligands

Reaction of HgCl2 and double betaine ligands in water at about 80 ℃ yielded two new Hg(Ⅱ) complexes,[Hg(L1)Cl2]·H2O 1 and [Hg2(L2)Cl4]·3HgCl2 2(L1 = 1,3-bis(pyridinio-4-carboxylato)-propane,L2 = 1,4-bis(pyridinio-4-carboxylato)-1,4-dimenthylbenzene).Their struc-tures have been characterized by single-crystal X-ray diffraction techniques.The structure of 1 contains 1-D chains,in which the adjacent Hg(Ⅱ) atoms are bridged by L1 ligands in a syn-syn bis-monodentate mode.The chains are further connected through face-to-face π-π stacking interactions between pyridine rings to generate an infinite double-chain network.In 2,two Hg(Ⅱ) atoms are joined by L2 ligands in the same coordination mode as 1 to form an isolated dinuclear structure.The thermal stabilities of both complexes have also been investigated.     

Synthesis and Characterization of Chiral Organogallium and Indium Complexes with Salen Ligands

Several new chiral organogallium and indium complexes with chiral Salen(1 and 2) as anxciliary ligands have been synthesized and characterized by elemental analysis,IR,^1H NMR and Mass spectroscopy.For the gallium,Mono and bimetallic complexes were obtained,whereas ring closure complexes of indium were obtained.     

Syntheses, Characterization and Crystal Structures of New Nickel Complexes with 2,6-Bis （ imino ） pyridyl Ligands

In the past decade, the imino-complexes based on late transition metal have received significantly increasing attention for their excellent performance in the olefin polymerization area since Brookhart et al. demonstrated that the Ni( Ⅱ ) complexes incorporating with sterically hindered α-diimine ligands could be used in the polymerization of ethylene to form high molecular weight polymers.     

Syntheses and Crystal Structures of Lanthanide Complexes of New 15-Membered Macrocyclic Ligands with Three Pendant Acetato Groups

Two new 15-memhored fimctionalized macrocycles, dioxo-polyazacydoalkanes with three pendant acetato groups, have been synthesized by the condensation reaction of DTPA dianhy-dride (DTPA = diethylenetrlamlnepentaacetic acid ) with 1,2-di-amlnopropane, ( 15-DTPA-1, 2-pn), or 1, 2-diaminocydohex-ane, (15-DTPA-1,2-cy). Their lanthanide complexes [ Ln ( 15-DTPA-1,2-pn)(H2O)]2[Ln= Eu (1), Gd (2)] and [Ln(15-DTPA-1,2-cy)(H2O)]2[Ln= Eu (3), Gd (4)] were also pre-pared. Single crystal X-ray diffraction analyses of complexes 2 and 4 show that they have dimeric structures in solid state;each metal ion is nine-coordinated in a distorted tricapped-trig-onal prism. In complex 4, the coexistence of two diastereoiso-meric molecules in the crystal lattice was observed.     

Syntheses and Structures of Two Mixed Ligands Lanthanide Complexes with N,N—Substituted Adipamide

1 INTRODUCTIONInstead of the traditional organo-phosphate or phosphorus extractents which ultimately create undesirable waste even after incineration [1], some organic amides[2] have been suggested as possible extractents for the separation of lanthanides, such as (R1R2NCO)2(CH2)n [3,4]. As excellent ligands, diamides show stability, low toxicity and can be synthesized by simple methods. Hudson and his colleagues have synthesized a series of malondiamides and studied the structures of t…     

Synthesis and Characterization of Monomeric Salicylaldiminato Lanthanide Complexes and Their Catalytic Behavior for Polymerization of ε—Caprolactone

IntroductionSchiffbaseligandscanbeusedtoprovideastereochem icallyrigidligandframeworkinhomogenousprecatalystsofsomemetals,suchassalenCrcatalystsinasymmetricring openingreactionofepoxide1andsalenAlinring openingpolymerizationoflactideandrelatedcyclicesters .2 Recently ,itwasreportedthatthebidentateSchiffbasecomplexesofearlyandlatetransitionmetalscanserveaspromisingalterna tivestometallocenecatalystsforthepolymerizationofα olefins.3Therefore ,theapplicationsofSchiffbaseligandsinorganometallic…     

Syntheses and Structures of Blue Luminescent Zinc （Ⅱ） Complexes with 2,6-Bis （imino）pyridyl Ligands

Luminescent coordination compounds with nitrogen-containing ligands have attracted much attention due to their good performance in sensor and electroluminescent device techniques, To develop new luminescent materials, a large number of d^10 metal complexes, especially zinc complexes, with the nitrogen-containing ligands have been synthesized and their luminescence behaviour have     

Synthesis and Characterization of Novel Lanthanocene Complexes with Dichalcogenolate o-Carboranyl Ligands

ＩｎｔｒｏｄｕｃｔｉｏｎＵｐｔｏｄａｔｅｃｏｎｓｉｄｅｒａｂｌｅａｔｔｅｎｔｉｏｎｈａｓｂｅｅｎｄｅｖｏｔｅｄｔｏｔｈｅｍｅｔａｌｃｏｍｐｌｅｘｅｓｗｉｔｈｃｈａｌｃｏｇｅｎｏｌａｔｅｌｉｇａｎｄｓ .1,2Ｒｅｃｅｎｔｌｙｔｒａｎｓｉｔｉｏｎｍｅｔａｌｃｏｍｐｌｅｘｅｓｃｏｎｔａｉｎｉｎｇａｃｈｅｌａｔｉｎｇ1,2 ｄｉｃａｒｂａ ｃｌｏｓｏ ｄｏｄｅｃａｂａｒａｎｅ 1,2 ｄｉｃｈａｌｃｏｇｅｎｏｌａｔｅｌｉｇ ａｎｄｓ3 10 ｈａｖｅａｔｔｒａｃｔｅｄａｇｒｅａｔｄｅａｌｏｆｉｎｔｅｒｅｓｔｄｕｅｔｏｔ…     

Syntheses and Crystal Structures of Three Palladium（Ⅱ） Complexes with Isonitrosobenzoylacetoneimine Ligand

Three palladium (II) complexes with the isonitrosobenzoylacetoneimine (HIBI) ligand, Pd (p‐CH₃C₆H₄IBI)₂ (1), Pd (C₆H₅IBI)₂ (2) and Pd₂Cl₂ (C₆H₅CH₂IBI)₂ · CHCl₃ (3), were prepared and characterized by IR, Raman and X‐ray diffraction studies. The geometries around the palladium atoms in the complexes 1 and 2 are distorted trans‐PdN₄ square planes, and the Schiff base ligands RIBI^? are coordinated through their oximo‐nitrogen atoms and imino‐nitrogen atoms. The week Pd…H? C agostic interactions [Pd…H = 0.2764 nm] complete the hexacoordinate environment around palladium in the complex 1. The octahedral deformation of the classical square planar environment of the Pd atom is due to the week Pd…O (1b) interactions [Pd? O (1b) = 0.3157 (9) nm] in the complex 2. The complex 3 is a first example of binuclear complex with isonitrosoketoimine ligands, in which one of oximo groups is coordinated through oximo‐nitrogen and oximo‐oxygen atoms.     

二（胍基）锆配合物的合成和表征

Addition of one equivalent of LiN（i-Pr）2 or LiN（CH2）5 to carbodiimides, RN=C=NR [R=cyclohexyl （Cy）, isopropyl （i-Pr）], generated the corresponding lithium of tetrasubstituted guanidinates {Li[RNC（N R^′2）NR]（THF）}2 [R=i-Pr, N R^′2=N（i-Pr）2 （1）, N（CH2）5 （2）; R=Cy, N R^′2=N（i-Pr）2 （3）, N（CH2）5 （4）]. Treatment of ZrCl4 with freshly prepared solutions of their lithium guanidinates provided a series of bis（guanidinate） complexes of Zr with the general formula Zr[RNC（N R^′2）NR]2Cl2 [R=i-Pr, N R^′2=N（i-Pr）2 （5）, N（CH2）5 （6）; R=Cy, N R^′2=N（i-Pr）2 （7）, N（CH2）5 （8）]. Complexes 1, 2, 5-8 were characterized by elemental analysis, IR and ^1H NMR spectra. The molecular structures of complexes 1, 7 and 8 were further determined by X-ray diffraction studies.     

二个含水杨酰腙配体的钒配合物的合成与晶体结构研究

2种水杨酰腙配体H2L1(H2L1=邻羟基苯乙酮缩水杨酰腙)和H2L2(H2L2=水杨醛缩水杨酰腙)分别与VO(acac)2反应,合成了2个钒配合物[VOL1(C2H5O)]2(1)和[VOL2(i-C3H7O)](2),利用元素分析、红外光谱、紫外光谱和单晶衍射等手段进行表征。配合物1是由酚氧原子桥联2个金属中心形成的具有晶体学中心对称性的双核钒(V)配合物结构,每个V(V)原子具有扭曲的八面体配位构型。配合物2为单核结构,每个V(V)原子具有扭曲的四角锥配位构型,相邻的配合物分子通过分子间氢键作用形成一维超分子链状结构。采用循环伏安法研究了化合物2的电化学性质。     

含混合配体的双核Mn(Ⅲ)Schiff碱配合物合成和晶体结构

二水杨酰基肼;含混合配体的双核Mn(Ⅲ)Schiff碱配合物合成和晶体结构     

两个Pd(II)的异亚硝基乙酰丙酮亚胺配合物的合成和表征

合成了两个异亚硝基乙酰丙酮亚胺Pd(II)配合物，Pd(o-BrC_6H_4-IAI)_2 (1) 和Pd(C_6H_5CH_2-IAI)_2 (2)（IAI = isonitrosoacetylacetoneimino），用IR和 Raman光谱对两个配合物进行了表征，并测定了配合物1的晶体结构。配合物1晶体 属单斜晶系，空间群为P2_1/c，晶胞参数：a = 0.8013(2) nm，b = 1.8775(4) nm，c = 0.7905(2) nm，β = 98.22(3)°，V = 1.1770(5) nm~3，Z = 2，D_c = 1.892 g·cm~(-3)，F(000) = 656，R = 0.0663。在这两个配合物中，二齿 Schiff碱配体的异亚硝基（肟基）的N原子和亚胺的N原子与Pd(II)配位，形成反式 的PdN_4平面正方形配位构型。     

茂－茚锆金属络合物催化乙烯/1－己烯共聚和丙稀均聚研究

Complexes （R^1Cp）（R^2Ind）ZrCl2, the catalysts previously reported active for ethylene polymerization showed high activity in ethylene/1-hexene copolymerization and propylene polymerization in the presence of MAO. The content of 1-hexene in copolymers ranged from 1.2% to 3.2%. In propylene polymerization the complex 1 showed the highest activity, up to 1.2×10^6 g of polypropylene per mol of catalyst per hour. Based on the analysis of NMR spectral data, the relationships between complex structures and polymerization results were explored.     

基于含有硫醚基团的吡啶烷基酰胺配体的铜配合物的合成和结构表征

合成和表征了含有硫醚基团的吡啶烷基酰胺配体2-(甲硫基)-N-[2-(2-吡啶)甲基]乙酰胺(HL1)和2-(甲硫基)-N-[2-(2-吡啶)乙基]乙酰胺(HL2)及其3个铜的配合物,{[Cu(L1)(CH₃OH)](OTf)}_n(1)(Otf=三氟甲磺酸根),{[Cu(L2)(OTf)]·CH₃OH}_n(2)和[Cu(HL2)(CH₃OH)Cl](3),并通过X-射线单晶衍射分析确定了其晶体结构。配合物1和2均为含有铜的一维配位聚合物,而配合物3为单核铜配合物。分析了配合物中铜离子的配位特点及可能的形成原因。     

基于含有硫醚基团的吡啶烷基酰胺配体的铜配合物的合成和结构表征

合成和表征了含有硫醚基团的吡啶烷基酰胺配体2-(甲硫基)-N-[2-(2-吡啶)甲基]乙酰胺(HL1)和2-(甲硫基)-N-[2-(2-吡啶)乙基]乙酰胺(HL2)及其3个铜的配合物,{[Cu(L1)(CH₃OH)](OTf)}_n(1)(Otf=三氟甲磺酸根),{[Cu(L2)(OTf)]·CH₃OH}_n(2)和[Cu(HL2)(CH₃OH)Cl](3),并通过X-射线单晶衍射分析确定了其晶体结构。配合物1和2均为含有铜的一维配位聚合物,而配合物3为单核铜配合物。分析了配合物中铜离子的配位特点及可能的形成原因。