Synthesis and Crystal Structure of Dinuclear Copper Complex[Cu（CH2O（C6H4）N=C（C6H4）O）（Py]2

1 INTRODUCTION Synthesis of transition metal complexes with Schiff-base has been a subject of considerable importance [1,2]. They are not only good complexing agents for Schiff-base, but also good bactericide and antitumour agent [3,4]. At present, there is a spectacular growth in this field. Recently, some bridged binuclear complexes have received much attention on account of their biological relevance and condensed-phase magnetic properties[5,6]. Especially, the complexes containin…     

Synthesis and Crystal Structure of the Polymorphic Isomer [Cu（dafone）2（H2O）2]（Hphth）2

1 INTRODUCTION The metal-containing supramolecular frame- works can be constructed through coordinate cova- lent or supramolecular contacts such as hydrogen- bond and π-π stacking[1 ～ 3]. Extended networks possessing higher dimensionalities can be obtained by assembly of coordination polymers (or comple- xes) with lower dimensionalities via hydrogen bond interactions[4～13]. However, normally the higher di- mensional networks are generated by one-dimen- sional chains through hydrogenbo…     

Synthesis and Crystal Structure of （H3O）2[Cu3Cl3（H2O）3（NC9H12.5O6）2]

1 INTRODUCTION The polydentate ligand nitrilotripropionic acid, H3ntp[N(CH2CH2COOH)3], has attracted conside- rable research interest in constructing coordination polymers, designing organic-inorganic hybrid mate- rials[1], synthesizing supramolecular compounds[2], etc. due to its high degree of flexibility with three carboxylic acid moieties allowing for a variety of coordination through oxygen atoms[3]. It also pro- vides other versatile properties such as the possibili- ty of inter-…     

Synthesis and Crystal Structure of [Mn（DPMT）2Cl2（H2O）2]

The title compound [Mn(DPMT)2Cl2(H2O)2] (DPMT = 1-[[2-(2,4-dichlorophenyl)- 1,3-dioxolan-2-yl]methyl]-1H-1,2,4-triazole) was synthesized by the reaction of MnCl2·4H2O and DPMT in ethanol solution and its structure was determined by single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group P21/c with a = 23.913(4), b = 7.8883(13), c = 8.6291(14) , β = 95.816(3)o, V = 1619.4(5) 3, Z = 2, C24H26Cl6MnN6O6, Mr = 762.15, Dc = 1.563 g/cm3, μ = 0.950 mm-1, S = 1.045, F(000) = 774, R = 0.0462 and wR = 0.0981. The molecular structure is a centrosymmetric conformation, and two ligands are symmetrically located on both sides of the Mn atom. The manganese atom is surrounded by two nitrogen atoms from ligands, two chlorine atoms and two oxygen atoms from water molecules to form a slightly distorted octahedral geometry.     

Synthesis and Crystal Structure of Cu2（pba）（bpy）2Cl2.4H2O

1　ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｃｏｏｒｄｉｎａｔｉｏｎｃｈｅｍｉｓｔｒｙｏｆｍｕｌｔｉ ｓｕｂｓｔｉｔｕｔｅｄｏｘａｍｉｄｅｓｉｓｏｆｉｍｐｏｒｔａｎｃｅｔｏａｗｉｄｅｖａｒｉｅｔｙｏｆｃｈｅｍｉｃａｌ[1 ] ,ｂｉｏｌｏｇｉｃａｌ[1 ] ａｎｄａｐｐｌｉｅｄｓｙｓｔｅｍｓ[2 ,3] .Ｔｈｅｍａｇｎｅｔｉｃ[4,5]ａｎｄｓｐｅｃｔｒｏｓｃｏｐｉｃ[6 ,7] ｐｒｏｐｅｒｔｉｅｓｏｆｔｈｅｏｘａｍｉｄｅｃｏｍｐｌｅｘｅｓａｒｅｖｅｒｙｉｎｔｅｒｅｓｔｉｎｇ .Ａｌｏｔｏｆｍｏｎｏｎｕｃｌｅａｒａｎｄｂｉｍｅｔａｌｌ…     

Synthesis and Crystal Structure of a Novel Heterometallic Complex [Na2Cu2Gd2（pdc）4（H2O）14·2H2O]

A novel heterometallic complex [Na2Cu2Gd2（pdc）4（H2O）14·2H2O] （H3pdc = 1H- pyrazole-3,5-dicarboxylic acid） has been synthesized and characterized by 1R spectra, elemental analysis, and single-crystal X-ray analysis. The crystal belongs to the monoclinic system, space group P2 1/c with a = 7.9521（18）, b = 12.251（3）, c = 22.293（5） A, β = 110.173（5）°, V= 2038.5（8） A^3, Mr = 1388.13, Z = 2, F（000） = 1352, Dc = 2.261 g/cm^3,/2 = 4.380 mm^-1, the final R = 0.0409 and wR = 0.0622 for 2453 observed reflections with I 〉 2σ（I）. The structural analysis shows that the Na^I, Cu^II and Gd^II ions are linked together by two kinds of bridging ligands （pdc^3- and H2O） to form a main moiety [Na2Cu2Gd2（pdc）4（H2O）14], which can be regarded as a centrosymmetric dimmer of [NaCuGd（pdc）2（H2O）7]. Many hydrogen bonds exist in the complex to build a 3D supramolecular framework.     

Syntheses and Crystal Structures of Complexes [Cu（C14H8S3O4Br）] （C4H9NO） and[Ni（C14H9N2O3Br）]（C4H9NO）

The title compounds, Cu（L1）（C4H8NHO） and Ni（L2）（C4H8NHO） （H2L1 = 5-bromosalicylaldehyde-p-nitrobenzoylhydrazone, H2L2 = 5-bromosalicylaldehyde-p-hydroxybenzoylhydrazone）, have been obtained and characterized by single-crystal X-ray diffraction. Complex 1 belongs to the triclinic system, space group P1 with a = 8.6960（2）, b = 9.957（2）, c = 11.878（2）A, α = 73.36（3）, β = 78.25（3）, γ = 82.64（3）°, V = 962.1（3） A^3, Mr= 512.81, Z = 2, F（000） = 514, Dc = 1.770 g/cm^3,μ（MoKα） = 3.251, R = 0.0337 and wR = 0.0846. Complex 2 is of monoclinic, space group P21/c with a = 13.313（2）, b = 8.2096（1）, c = 21.890（3） A,β = 125.737（3）°, V = 1941.9（4） A^3, Mr= 478.97, Z = 4, F（000） = 968, Dc = 1.638 g/cm^3,μ（MoKα） = 3.085, R = 0.0356 and wR = 0.0817. The ligands form a satisfactory N2O2 square plane around the metal centers in two compounds. Different patterns of hydrogen bonds are observed owing to the presence of different substituents on aromatic ring of the acylhydrazone Schiff bases. In complex 1, square-planar copper（Ⅱ） complexes are linked by intermolecular hydrogen bonds leading to zigzag infinite chains. In complex 2, the metal complexes are linked via hydrogen bonds to form corrugated sheets in a staggered fashion; 3D channels along the b axis are constructed through other non-covalent interactions between the neighboring layers.     

Hydrothermal Synthesis and Crystal Structure of a Polyoxometalate- based Complex [Cu^I（phen）2]4（SiW12O40）

A new hybrid polyoxometalate-based complex, [Cu^I（phen）214（SiW12O40） （phen = 1,10-phenanthroline）, has been synthesized by hydrothermal method and characterized with the aid of elemental analysis, IR, UV spectra and thermal analysis studies. The result of X-ray crystallography analysis exhibits that the title compound crystallizes in the orthorhombic space group P212121, and the formula is C96H64N16Cu4SiW12O40. Crystal data： a = 18.3574（14）, b = 21.1952（16）, c = 27.992（2）A, Mr = 4570.08, V = 10891.4（14）A^3, Z = 4, Dc = 2.787 g/cm^3,μ = 13.478 mm^-1, R = 0.0364, wR = 0.0638 （I 〉 2σ（I）） and F（000） = 8360. The complex consists of one α-Keggin anion [SIW12O40]^4- and four discrete [Cu^I（phen）2]^＋ cations. The valence sum calculations for the Cu atoms suggest that all four Cu atoms are in the ＋1 oxidation state.     

Synthesis and Crystal Structure of a Dinuclear Compound Cu2[（O=PPh2）2N]2（μ-O2PPh2）2

1 INTRODUCTION Transition-metal complexes supported by poly-dentate phosphine ligands have been widely studieddue to the unique photophysical properties andpotential applications as industrial catalysts, mole-cular sensors and drugs[1~3]. As known, oxidation ofphosphine ligands could happen in the synthesisreaction to result in novel complex with unexpectedstructure[4, 5]. For example, the structure of complexFe((OPPh2)2N)3[6] is an octahedral tris-chelate arrange-ment of the oxidized a…     

Synthesis and Crystal Structure of [SmN（CH2COO）3（H2O）2].H2O

1　ＩＮＴＲＯＤＵＣＴＩＯＮＲａｒｅＥａｒｔｈ (ＲＥ)ｅｌｅｍｅｎｔｓａｒｅａｐｐｌｉｅｄｉｎａｇｒｉｃｕｌｔｕｒｅａｎｄｍｅｄｉｃｉｎｅ .Ｔｈｅｒｆｏｒｅ,ｂｅｔｔｅｒｕｎｄｅｒｓｔａｎｄｉｎｇｏｆｔｈｅｂｏｎｄｉｎｇｏｆＲＥｉｏｎｓｉｎｔｈｅｃｏｍｐｌｅｘｅｓｗｉｔｈａｍｉｎｏａｃｉｄｓｉｓｎｅｃｅｓｓａｒｙ .ＴｈｅｃｒｙｓｔａｌｓｔｒｕｃｔｕｒｅｏｆＲＥｃｏｍｐｌｅｘｅｓｗｉｔｈｔｈｅｓｉｍｐｌｅｓｔａｍｉｎｏａｃｉｄｇｌｙｃｉｎｅｗｅｒｅｓｔｕｄｉｅｄｂｅｆｏｒｅ[1- 4].Ｔｏｒｅｓｅａｒｃｈ…     

Synthesis and Crystal Structure of a 1D Coordination Polymer [Co（nitmpy）2（tp）（H2O）2]n

1 INTRODUCTION The scope of exploring magnetic properties of compounds arising from the combination of tran- sition metal with nitroxide radicals is steadily in- creasing. Considerable efforts have been directed in preparing and characterizing metal-radi…     

Synthesis and Crystal Structure of a New Ternary Mixed Ligand Complex [Cu（ampym）（bapa）Cl]（ClO4） （ampym = 2-Aminopyrimidine, bapa = Bi（3-aminopropyl）amine）

1 INTRODUCTION The pyrimidine substructure plays a vital role in physiological system. It occurs not only in organisms such as nucleic acids, vitamins and coenzymes[1~3], but also frequently presents in commercially availa- ble drugs such as antibiotics, antiatherosclerotic and antihypertensive agent[4, 5]. Studying the interaction of pyrimidine derivatives and metal ions is important as a means of understanding the role of pyrimidine ring in biological systems. This paper describes the …     

Synthesis and Crystal Structure of a New Diamine Complex CuC14（H2tn）

In an attempt to synthesize a new pyrimidine complex of copper(H) in a solution reaction of CuBr2 with 2,2‘-bis(hexahydropydmidine) and hydro-chloric acid, we unexpectedly obtained a bright yellow chip-like crystal of CuCl4(H2tn) [H2tn=(H3NCH2CH2CH2NH3)^2 ]. Its structure was determined by single-crystal X-ray diffraction analysis. The crystal belongs to orthorhombic system, space group Pnma, with cell parameters: a=0.7216(2)nm, b=1.8308(6)nm, c=0.7553(3)nm, V=0.9953(6)nm^3, Z=4, F(000)=564, Mr=281.49, Dc=1.879 g/cm^3. u(Mo Ka)=3.204 mm^-1, R1=0.0248, wR2=0.0575. The analysis of the crystal structure indicates that the complex has a three-dimensional network structure, which is formed by hydrogen bonds and electrostatic interaction.     

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…