Synthesis and Structure of Bis（indene—1,2,3—trione 2—oximato）bis （aqua）Mn（Ⅱ）：Mn（C9H4NO3）2（H2O）2

1 INTRODUCTION The interest in the complexes of transition metals with ligands ketoxime[1, 2] as potential models for metal binding sites in ferroverdin[3, 4] has prompted the investigation on the structures and the overall coordination geometry of the metal centers in these complexes. Oxime derivatives are interesting ligands since the ketoximes are found to chelate transition metals through the N (oxime) and O (ketone) atoms[5, 6]. However, monodentate coordination via only one O or …     

Synthesis and Crystal Structure of Mn（phen）（PhCOO）2（H2O）

1 INTRODUCTION During the last decade the manganese che- mistry has aroused great interest due to its diverse redox functions of enzymes in photosystem Ⅱ and its specially structural, magnetic and spectroscopic properties[1, 2]. A lot of manganese complexes involving carboxylate ligands have been reported, and their properties been fully explored[3, 4]. The coordination environment of the manganese site in biosystem often consists of oxygen and nitrogen atoms from the carboxylate groups…     

Syntheses, Spectroscopic Properties and Crystal Structures of （2-Cl-C6H4CH2）3SnS2CN（C5H10） and （2-Cl-C6H4CH2）3SnS2CN（C4H9N）

1 INTRODUCTION The chemistry of organotin(IV) complexes was extensively studied due to their biological activity and coordination chemistry[1～7]. More recently, phar- maceutical properties of alkyltin(IV) complexes with dithiocarbamate ligands have bee…     

Synthesis and Crystal Structure of Tetrakis（4—methylpyridine）bis（μ4—pentathio）—tetracopper（Ⅰ）（4—methylpyridine）solvate

1 INTRODUCTION An interesting aspect in the studies of copper-sulfur coordination chemistry is the apparent tendency of Cu(Ⅰ) ions to form various clusters with sulfur ligands. The coordination chemistry of Cu(Ⅰ) has been studied extensively owing to the importance of Cu(Ⅰ) in biological systems and copper-sulfur bonds detected in some metallopro- teins[1]. More recently, remarkably rich photoluminescence properties have been found in the tetranuclear complexes[2～5] and the cage-ty…     

Synthesis and Crystal Structure of aNovel Polymer Copper（ Ⅱ） Complex

1 INTRODUCTION One-dimensional coordination polymers of metal complexes have been extensively studied for many years owing to their unusual properties, and many efforts have been made to prepare these kinds of complexes. Study on these polymer complexes has an active field of coordination chemistry in recent years[1～5]. In this study we obtained a com- plex C14H9CuNO3CH3OH, of which the carboxy- late oxygen atom acts as the bridging ligands to coordinate to the second metal atom, fo…     

Synthesis and Structure of Iron Complex with 1,2—Dithiolate—1,2—dicarba—closo—dodecaborane [Li（THF）4][Fe（S2C2B10H10）2（THF）]

1 INTRODUCTION The complexes containing dithiolate ligands have played a well-established role in modern coordination chemistry[1]. There is continuous interest in complexes of chalcogenolate ligands with transition metals such as complexes of Pd[1], Mo[1], Au[2], Ir[3～6], Rh[4, 5], Co[7] and Re[1, 8] containing a chelating 1,2-dicarba-closo-dodecabarane-1,2-dich- alcogenolate ligand. Some of these complexes have become important in the study of new molecular materials[1, 9, 10]. Th…     

Synthesis, Crystal Structure and Fluorescence Property of [Y（sip）（H2O）4]n with 5-Sulfoisophthalate Ligand

1 INTRODUCTION Recently, much attention has been focused on metal- organic coordination polymers for their structural novelty and potentially important applications as advanced materials[1～3]. With the development of crystal engineering and supramolecular chemistry, it is possible to use organic ligands and metal salts to construct metal-organic coordination polymers pos- sessing some specific properties. Furthermore, inve- stigations on coordination complexes containing rare earth ion ha…     

Synthesis and Crystal Structure of a New Mononuclear Nickel（Ⅱ） Mixed Complex Derived from 2-Aminoethyl-bi（3-bi-aminopropyl）amine with 1,10-Phenanthroline

1 INTRODUCTION The research on organic polyamines is currently of great interest because of their potential applica- tions as useful organic ligands, in which the amine nitrogen atoms have strong coordination ability to the transition metal ions and recognition function[1~4]. Their transition metal complexes play an excellent role in catalysis and mimic studies on dismutase and chlorophyll[5~7]. Therefore much attention has been focused on their syntheses and applications[8~11]. Our group…     

Synthesis and Crystal Structure of [Cis-1,10phenanthroline-palladium(Ⅱ)(THF)_2]dinitrate (THF = Tetrahydrofuran)

1 INTRODUCTION The coordination chemistry of Pd(Ⅱ) com- plexes with didentate nitrogen coordination ligands has been extensively studied for a few decades[1]. Pd(Ⅱ) trends to bond to the didentate nitrogen in cis-mode and such complexes have potential usage in the emerging area of self-assembly[2]. We will report herein the synthesis and crystal structure of a cis-coordinated mononuclear Pd(Ⅱ) complex with one 1,10-phenanthroline and two THF as ligands, 1. 2 EXPERIMENTAL 2. …     

Syntheses and Crystal Structures of Two Cyano-bridged Bimetallic Complexes [Ce(DMSO)_4(H_2O)_3Fe(CN)_6]·H_2O and [La(DMSO)_4(H_2O)_3Co(CN)_6]·H_2O(DMSO = Dimethylsulfoxide)

1INTRODUCTION Recently,cyano-bridged lanthanide-transition me-tal complexes have been extensively investigateddue to their potential applications as precursors in the preparation of rare earth orthoferrites,fluores-cent and magnetic materials[1].Various complexes of this system have been obtained in order to ex-plore the relations between structures and pro-perties by using different ligands,such as DMF,4,4?-bipy,and so on,to fill the coordination sites of lanthanide ions[2～9].But up to…     

Synthesis and Structure of [HOCH2CH2N（CH3）3]4[Cu4OCl10]

ＳｙｎｔｈｅｓｉｓａｎｄＳｔｒｕｃｔｕｒｅｏｆ［ＨＯＣＨ_２ＣＨ_２Ｎ（ＣＨ_３）_３］_４［Ｃｕ_４ＯＣｌ_（１０）］ＷｕＤｉｎｇ－Ｍｉｎｇ；ＨｕａｎｇＸｉａｏ－Ｙｉｎｇ；ＺｈｕａｎｇＨｏｎｇ－Ｈｕｉ（ＳｔａｔｅＫｅｙＬａｂｏｒａｔｏｒｙｏｆＳｔｒｕｃｔ?..     

Hydrothermal Synthesis and Crystal Structure of a New 2D Layered Cadmium(II) Coordination Polymer:[Cd(bimc)_2]_n(bimc=1H-Benzimidazole-5-carboxylate)

1 INTRODUCTION Coordination polymers have attracted the atten- tion of chemists, physicists, and materials scientists owing to their fascinating structures and potential functional applications in the last decade[1～4]. The bridging ligands play a central role in constructing functional coordination polymers, and weak nonco- valent interactions like hydrogen bonding or π-π stacking plays an important role in molecular self- assembly[5～7]. As a multidentate and rigid ligand with multi-pr…     

Synthesis and Structural Characterization of a Novel 2D Supramolecular Complex {[Dy2Zn(dinic)4(H2O)8]·H2O}n (H2dinic=2,5-Pyridinedicaboxylic Acid)

A new dysprosium-zinc coordination polymer {[Dy2Zn(dinic)4(H2O)8]·H2O}n 1(H2dinic = 2,5-pyridinedicaboxylic acid) has been synthesized and structurally characterized by X-ray analysis. The complex (C28H30Dy2N4O25Zn, Mr = 1212.94) crystallizes in triclinic, space group P-1 with a = 7.8911(16), b = 9.3177(19), c = 13.029(3)(A), α = 75.29(3), β = 75.04(3), γ =79.00(3)°, V = 887.1(3)(A)3, Z = 1, Dc=2.236 g/cm3,μ(MoKα) = 4.947 mm-1, F(000) = 570, the final R = 0.0345 and wR = 0.0903 for 3644 observed reflections with I＞ 2σ(I). A two-dimensional supramolecular structure is formed in 1, which was characterized by elemental analysis, IR, TG analysis, and single-crystal X-ray diffraction.     

Syntheses and Crystal Structures of Two Novel 1-D Metal Complexes with Dicyanamide： [Zn（pheen）（dca）2]n and [Cu（quin）2（dca）2]n

1 INTRODUCTION Polymeric transition metal complexes with di-cyanamide have attracted considerable attention because of their interesting coordination and phy-sical properties in recent years[1]. The dicyanamide is a versatile ligand coordinated to metal…     

Hydrothermal Synthesis and Crystal Structure of a New Supramolecular Channel Framework Based on Cu Complexes and Polyoxovanadate:[Cu(Ⅰ)(phen)2]5[HV15O36(Cl)]0.65[H3V16O38(Cl)]0.35·2H2O

A new compound [Cu(Ⅰ)(phen)2]5[HV15O36(Cl)]0.65[H3V16O38(Cl)]0.35·2H2O 1(phen = 1,10'-phenanthroline) has been prepared from the hydrothermal reaction of V2O5, CuCl,3:1:1:0.5:2.5:1400. Compound 1 crystallizes in the space group P42212 of the tetragonal system with a = b = 21.5009(8), c = 28.401(2) (A), V = 13129.5(12) (A)3, Z = 4, Dc = 1.800 g/cm3,μ(MoKα) =1.932 mm-1, λ.(MoKα) = 0.71073 (A), F(000) = 7063.4, C120H81.20ClCu5N20O38.7V15.35, Mr = 3557.58,the final R = 0.0594 and wR= 0.1320 for 7761 observed reflections (1 ＞ 2σ(Ⅰ)). Structure analysis shows that 1 exhibits a 3D channel framework formed by the supramolecular assembly of Cu complexes and polyoxovanadate clusters via intermolecular hydrogen bonding, and the channels contain Cu complexes. Other characterizations by elemental analysis, XPS, IR, XRD and thermal analysis are also described.     

Crystal Structure of Praseodymium Complex with L－proline，Pr_2（L－Pro）_6（H_2O）_4·6ClO_4

ＣｒｙｓｔａｌＳｔｒｕｃｔｕｒｅｏｆＰｒａｓｅｏｄｙｍｉｕｍＣｏｍｐｌｅｘｗｉｔｈＬ－ｐｒｏｌｉｎｅ，Ｐｒ_２（Ｌ－Ｐｒｏ）_６（Ｈ_２Ｏ）_４·６ＣｌＯ_４￥ＷａｎｇＺｅｎｇ－Ｌｉｎ；ＨｕＮｉｎｇ－Ｈａｉ；ＮｉｕＣｈｕｎ－Ｊｉ；ＮｉＪｉａ－Ｚｕａｎ（Ｃ?..     

Synthesis and Structural Characterization of a Novel 2D Supramolecular Complex {[Dy_2Zn(dinic)_4(H_2O)_8]·H_2O}n (H_2dinic = 2,5-Pyridinedicaboxylic Acid)

1INTRODUCTION Studies on the syntheses,structures,and proper-ties of lanthanide-transition metal complexes are currently of great interest not only due to their beha-viors as good models to investigate the nature of magnetic exchange interactions between3d and4f metal ions in magnetic materials but also to the fascinating coordination properties of Ln(III)[1～6].Although some infinite lanthanide(III)-transition metal compounds have been obtained by the con-ventional self-assembly reacti…     

Synthesis and Crystal Structure of a Two-dimensional Coordination Polymer [Cd（dym）（H2O）2（H2O）]n with Cd6 Hexagonal Macrometallocycle

1 INTRODUCTION The investigation of coordination polymers has rapidly been expanded in last decade owing to their potential applications such as catalysis, molecular absorption, non-linear and magnetic materials. Among the varieties of such coordination polymers, the po- lymers of cadmium with dicarboxylates having fas- cinating structural topologies and good photolumi- nescence constitute a new family. Many reports are concerned about cadmium dicarboxylate polymers with 1D helix structu…     

Synthesis and Crystal Structure of a Dicyanamide-bridged One-dimensional Gadolinium(Ⅲ) Complex [Gd(dca)3(phen)2(H2O)]n

A chainlike coordination polymer [Gd(dca)3(phen)2(H2O)]n (dca = dicyanamide,phen = 1,10-phenanthroline) has been synthesized, and its crystal structure was characterized by X-ray single-crystal diffraction. The crystal belongs to monoclinic, space group P21/n with a = 10.6581(13), b = 15.6129(16), c = 17.733(3) (A), β = 90.499(5)°, V = 2950.8(7) (A)3, Z = 4,C30H18GdN13O, Mr = 733.82, Dc= 1.652 g/cm3, F(000) = 1444, λ(MoKα) = 0.71073 (A),μ = 2.297 mm-1, R = 0.0258 and wR = 0.0616 for 4570 observed reflections (I ＞ 2σ(Ⅰ)). In this complex, the gadolinium atom is nine-coordinated by four dca anions, two chelated phen ligands and one H2O molecule in a distorted tricapped trigonal prism. Two bridging dca anions connect the Gd(Ⅲ) ions yielding chainlike polymers that are linked by hydrogen bonds and π-π interactions to form a three-dimensional network.     

Synthesis and Crystal Structure of Poly{diaqua[N-(2-hydroxybenzyl)-D,L- aspartate]cadmium(II)}

1 INTRODUCTION Coordination-driven supramolecular assembly hasattracted great interest in constructing beautiful mo-tifs and developing new materials[1～5]. It is crucial toselect or synthesize suitable bridging organic li-gands[6～10]. The reduced Schiff base N-(2-hydro-xybenzyl)-D,L-amino acid is an excellent ligand forself-assembly with metal ions, not only due to itsprolific coordination sites but also its strong abilityto afford hydrogen bonding from secondary aminegroup and carbox…