Synthesis and Crystal Structure of Co(DMSO)_2(H_2O)_2(SCN)_2 with One-dimensional Hydrogen-bonded Structure (DMSO = Dimethylsulfoxide)

1 INTRODUCTION The development of supramolecular complexes has recently attracted considerable attention due to the fundamental interest in self-assembly processes of transition-metal complexes, supramolecular che- mistry and crystal engineering[1]. The ultimate goal is to gain control in order to direct their function[2]. Self-assembly through coordination and nonco- valent interactions such as hydrogen bonds, aromatic π···π stacking, steric repulsion and Van der Waals forces leads …     

Hydrothermal Synthesis and Crystal Structure of a Novel Isophthalate-bridged Copper(II) Polymer with Two-dimensional Network Structure: [Cu_2(phen)(ipt)_2]_(2n)·nH_2O (ipt = isophthalate, phen = 1,10-phenanthroline)

1 INTRODUCTION donor due to the presence of the protonated carboxyl group; (d) it can form short bridges via one car- Coordination polymers are of great interest due to boxylato end or long bridges via the benzene ring[7]. their physical properties and potential applications in We believe that coordination functionality of isoph- functional materials[1~3]. Aromatic polycarboxylic acids thalate can lead to interesting structures. In this com- such as 1,2,4,5-benzenetetracarboxylic acid[4],…     

Synthesis and Structure of Bis[2,6-bis(2-pyridylamino)pyridinium] Tetrachlorocadmiumate(II)

1 INTRODUTION The d10 configuration of Cd(II) permits a wide variety of coordination numbers and geometries[1~3]. In recent years, one-, two- and three-dimensional infinite supramolecular coordination assemblies of Cd(II) have been the subject of great interest owing to their potential applications in catalysis, optical properties, clathration, etc[4~8]. In fabricating the coordination assemblies, organic ligands as well as inorganic anions have been observed to control the structural di…     

Synthesis and Crystal Structure of Cobalt(II) Complex [Co(H_2O)_2(bpe)(OAc)_2]·4,4''''-dpdo

1 INTRODUCTION Recently construction of new coordination poly-mer networks through the rational combination oforganic ligands ‘spacers’and metal ‘nodes’ is an areaof intense interest[1～3] because of their capability ofshowing novel magnetic[4], nonl     

Synthesis and Crystal Structure of [Ni(C_5H_2N_2O_4)(2,2''''bipy)(H_2O)_2]·H_2O

1 INTRODUCTION Orotic acid (H3dtpc), an important pyrimidine derivative as the effective precursor in the biosynthesis of pyrimidine base of nucleic acids in living organisms, plays a unique role in bioinorganic and pharmaceutical. Aside from the biological interest, orotic acid is also interesting in coordination chemistry. Its ketonic and enolic tautomers along with asymmetric geometry make it to be a very good versatile polydentate ligand[1~5]. The incorporation of metals into supram…     

Synthesis and Crystal Structure of [Zn(HPDB)_2(H_2O)_2]n·2nDMSO·2nH_2O (H_2-PDB = Pyridine-3,4-dicarboxylic Acid)

1 INTRODUCTION Metal-organic coordination polymers are currently of considerable interest and importance because they can be used as new functional materials applicable in adsorption, luminescent and NLO materials fields[1, 2]. Due to the manifold N- and O-donors of pyridine- (bi)carboxylic ligands, metal pyridine-(bi)carboxyla- tes can construct versatile structural motifs, which finally aggregate to generate various supramolecular architectures with interesting properties[3, 4]. The d…     

Synthesis, Crystal Structure and Electrochemical Properties of Complex [Ni(2,2’-bipy)_2(ClC_6H_4COO)(H_2O)](ClO_4)

1 INTRODUCTION Nickel is vital for organism as a trace element and it often acts as component or secondary factor of enzyme. In the latest two decades, biological inor- ganic chemistry of nickel has become one of the hottest fields and the coordination chemistry of nic- kel has made a great progress[1]. Complexes built upon organic aromatic carboxylic acid and metallic ion have attracted chemists’ interest for years due to their potential applications in material, medicine, molecular ele…     

Synthesis and Crystal Structure of a Three-dimensional Cd(II) Coordination Polymer [Cd(μ_(1,3)-SCN)(μ_3-pco)]_n(pco=Pyrazine-2-carboxylate 4-oxide Anion)

1 INTRODUCTION For a long time much research interest has been focused on coordination polymeric compounds[1] because these new coordination polymers may afford new materials with useful properties, such as catalytic activity, micro-porosity, electrical conduc- tivity, non-linear optical activity, magnetic coupling behavior and so on[2]. Thiocyanate anion is a very useful bridging ligand, and many complexes[3～5] are synthesized with it as bridging ligand and some of them exhibit interesti…     

Synthesis and Structure of a Novel Compound [Cu_2(EDTA)(Py)_2(H_2O)_2]·2H_2O

1 INTRODUCTION Multinuclear coordination compounds have attrac-ted much attention due to their distinctive optical, elec-tric and magnetic properties as well as enzyme ana-logue[1～4]. It is important for carboxylic acid to de-sign this compound[5～8]. EDTA is a useful titrant formetal determination because EDTA molecule is easyto coordinate with a metal atom (1:1). Other types ofEDTA-M compounds are seldom to know except Ln2-M3(EDTA)3(H2O)11?12H2O[5] and (UO2 )2EDTA[9]. …     

Synthesis and Crystal Structure of Complex: [Co(cdm)_2(H_2O)_4].2H_2O (cdm=Carbamyldicyanomethanide Anion)

1 INTRODUCTION Crystal engineering and the design of solid-state architectures have recently become areas of increasing interest[1, 2]. Such crystal engineering may afford new materials with useful properties such as catalytic activity, micro-porosity, nonlinear optical activity, cooperative magnetic behavior and so on. Polynitrile-ligand is one of the ideal multi-functional ligands for crystal engineering and many complexes with polynitriles as ligands have been found to show the spe…     

One-dimensional Zigzag Chain Coordination Polymer [Zn(μ-phth)(imi)_2]_∞ Bridged by ο-Phthalato

1 INTRODUCTION The research on coordination polymers is currently of great interest because of their fascinating structure diversity and potential applications as functional materials, which possess potential functions such as molecular recognition, enantiomer separation, chiral synthesis, photoluminescent and selective catalysis[1]. Recently many coordination polymers with special physical and chemical properties have been synthesized and reported[2]. The structures and functions of th…     

Synthesis and Structure of a New Copper(II) Complex Cu(C_(13)H_9N_3O_2Br)_2.H_2O

1 INTRODUCTION Owing to their biological activities and chemical/industrial versalities, considerable attention has been continually attracted to metal-hydrazine complexes. For instance, Schiff base hydrazine and its analogues have been well studied in order to better understand the action mechanism of Vitamin B6-containing enzymes[1~3]. Six-coordinated copper(Ⅱ) complexes are of considerable interest, mainly due to their coordination geometry and spectroscopic properties[4]. Due to th…     

Synthesis and Crystal Structure of a Novel Hetero-bimetallic Complex with a Three-dimensional Network Structure: Bis(malonato)tetra(aqua)calcum(II)cobalt(II)

1INTRODUCTION There has been considerable interest in the designand synthesis of transition metal complexes withcarboxylate ligands in coordination chemistry due tothe fact that this type of complexes has potentialapplications in molecule-based magnets,catalysis,supramolecular chemistry and biological systems[1～3].As an important flexibility dicarboxylate ligand,malonate dianion may act as momodentate,chelatedbidentate and tridentate bridging ligands to formvarious1D,2D and3D structures[…     

Crystal Structure of a Linear Ag(I) Complex with Niflumic Acid and Its Fluorescent Property

1 INTRODUCTION Niflumic acid (2-[3-(trifluoromethyl) phenyl] amino nicotinic acid, HNifa) is an organic fluoro compound used in the preparation of ‘Donalgin’ as the active substance. In medicine, HNifa has been widely used as a non-steroidal anti-inflammatory analgetic drug[1]. The extensive application of this preparation in medical practice has attracted much interest in other various biological fields such as the determination in serum, urine[2～4], and coordination behaviors with …     

Synthesis and Crystal Structure of Trans-diaquabis(hexamethylenetetramine-N)bis(isothiocyanato)cobalt(Ⅱ) trans-tetraaquabis(isothiocyanato)cobalt(Ⅱ) dihydrate

1 INTRODUCTION Supramolecular compounds assembled by coordination covalent bonding or hydrogen bonding are of considerable interest due to their potential applications in developing new materials with magnetic, optical and catalytic properties[1]. One of the synthesis methods used to construct the functional compounds is that octahedral metal ion connects to polydentate ligand such as 4, 4?bipyridine, pyrazine and so on to form multi-dimensional supramolecular polymer[2]. Hmt (hexamethyl…     

Synthesis and Crystal Structure of [Cu(phen)_2(SO_4)(H_2O)]·0.5C_4H_4O_4·7H_2O

1INTRODUCTION The construction of metal-organic coordination polymers based on covalent interactions[1]or supra-molecular contacts such as hydrogen-bonding and/orπ-πinteractions)[2]is now of great interest not only due to the enormous variety of intriguing structural topologies themselves,but also to their unexpected physical and chemical properties for potential prac-tical applications as functional materials.Many N-containing ligands,such as4,4?-bipyridine,2,2?-bi-pyridine and1,10-phen…     

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 [Ni(II)(L)(py)_3]·(py)

1 INTRODUCTION Schiff bases and their metal complexes are useful reagents in organic synthesis[1], and they have exhi- bited some biological activities as anticancer and antitumor drugs[2]. The crystal structures and physi- cal and chemical properties of many Schiff bases and their transition metals complexes have been re- ported[3~5]. Further interest in the coordination che- mistry of nickel(II) arises from the role of these complexes in several catalytic reactions, such as electrocat…     

Synthesis, Characterization and Structure of the Dimmer Complex [Ni(TSSB)(phen)H_2O]·C_2H_5OH·0.5H_2O

1 INTRODUCTION Schiff base complexes containing sulfur and com- plexes of amino acid Schiff bases[1～5] have recently aroused increasing interest because of their antiviral, anticancer and antibacterial activities. Taurine, an amino acid containing sulfur, is indispensable to human beings and has important physiological func- tions. Recently, we have found that the Shiff base derived from taurine has manifold coordination modes[4～10]. Aromatic-ring stacking interaction is an important …     

Synthesis and Crystal Structure of [La（BTC）（H2O）6]n

1 INTRODUCTION desired topologies owing to their rich coordination modes[8~12] and we have been exploring the chemi- The assembly of metal-organic infinite frame- stry of coordination polymers constructed by tran- works via coordination of metal ions with multifunc- sition metals and benzoic multicarboxylic acids[13~16]. tional organic ligands is a field of increasing inte- In addition, lanthanide ions have high affinity for rest[1~4]. A rational designed and predictable coor- hard donor a…