A Novel Copper(II) Coordination Polymer with Figure-of-eight-shaped Channels Occupied by Flexible Monodentate and Bidentate N,N′-bipyrdyl Ligands

A copper(II) coordination polymer, [Cu3(HOA)2(bpp)4]n (1, H4OA = 3,3′,4,4′-oxidiphthalic acid, bpp = 1,3-bis(4-pyridyl) propane), has been hydrothermally synthesized. The crystal structure is of monoclinic, space group P21/c with a = 11.544(3), b = 16.129(4), c = 21.181(6) , β = 98.848(5), V = 3897.0(2) 3, C84O18N8H70Cu3, Mr = 1670.13, Z = 2, Dc = 1.423 g/cm3, F(000) = 1722, μ = 0.887 mm-1 , R = 0.0878 and wR = 0.2583 for 8496 observed reflections (I > 2σ(I)). Single-crystal X-ray structural analysis reveals that 1 is a three-dimensional (3D) framework based on a two-dimensional (2D) mesomeric layer of alternating left-and right-handed helical chains. The monodentate terminal and bidentate bridging bpp ligands in the same conformation are all encapsulated in the figure-of-eight-shaped channels, thus further stabilizing the whole three-dimen-sional framework.     

Synthesis and Structure of a New Dinuclear Tungsten(Ⅰ) Compound with Phenylselenol Ligand, [W2(SePh)2(CO)6(MeCN)2]

The reaction of Et4NCl, C6H5SeNa and W(CO)6 in MeCN afforded a new dinuclear tungsten(Ⅰ) complex W2(SePh)2(CO)6(MeCN)2 1 (Mr = 929.98). The crystal structure has been determined by X-ray single-crystal diffraction. 1 Crystallizes in monoclinic, space group P21/n with a = 7.501(1), b = 18.387(2), c = 9.491(1) (A), β = 103.897(2)°, V = 1270.6(3) (A)3, Z = 2, Dc = 2.431g/cm3, μ = 119.50 cm-1, F(000) = 852, R = 0.0695 and wR = 0.1724 for 2220 independent reflections with I ＞ 2σ(Ⅰ). The X-ray structure analysis reveals that the W2Se2 core of 1 is planar with W-W bond length of 3.0433(13) (A) and W-Se of 2.5922(17) (A).     

Synthesis,Structure and Luminescent Property of a New bnn-type Zn(Ⅱ) Coordination Polymer

A new Zn(Ⅱ) coordination polymer, namely [Zn(Htci)(bib)0.5(H2O)]n·nH2O(1, H3 tci = tri(2-carboxyethyl)isocyanurate, bib = 1,4-bis(imidazol-1-ylmethyl)-butane) has been synthesized by combining H3 tci and bib ligands with Zn(Ⅱ) salts under solvothermal conditions. The title compound crystallizes in monoclinic, space group P21/c with a = 13.3424(7), b = 7.9051(5), c = 20.4650(12) , β = 101.935(5)o, V = 2111.8(2) 3, C17H24N5O11 Zn, Mr = 539.8, Z = 4, Dc = 1.698 g/cm3, F(000) = 1116, μ = 1.236 mm-1, the final R = 0.0398 and wR = 0.00879 for 3722 observed reflections(I 2■(I)). X-ray structural analysis reveals that compound 1 exhibits a three-dimensional(3D) pillar-layered framework, and can be simplified into a 5-connected bnn topological network. Moreover, the luminescent properties for compound 1 were also studied at room temperature.     

Synthesis,Structure and Photoluminescence of a New Cadmium（Ⅱ） Complex Involving in situ Decarboxylation

A new luminescent dinuclear cluster complex [Cd2（pzc）2（AmTAZ）（HEO）4（NO3）]·NO3 （Hpzc = pyrazine-2-carboxylic acid, AmTAZ = 3-amino-4H-1,2,4-triazole） has been prepared by the assembly of Cdn with pyrazine-2,3-dicarboxylic acid and 3-amino-lH-1,2,4-triazole-5-car- boxylic acid ligands under hydrothermal conditions, in which in situ decarboxylation of H2pzdc and HAmTZC ligands simultaneously occurred, and HEpzdc was transformed into Hpzc while HAmTZC into AmTAZ. The crystal structure is of triclinic, space group P1 with a = 7.096（2）, b = 11.140（4）, c = 14.887（5）А, α= 92.641（4）, β= 91.348（6）, γ= 96.058（6）°, V = 1168.5（7）А^3, C12H18Cd2N10O14, Mr = 751.16, Z = 2, Dc = 2.126 g/cm^3, F（000） = 730,μ=1.910 mm^-1, R = 0.0320 and wR = 0.0998 for 4549 observed reflections （I 〉 2σ（I））. The dinuclear cluster of 1 is extended into a 3D supramolecular architecture through intermolecular hydrogen bonding interactions. Complex I exhibits strong blue photoluminescence at room temperature.     

Synthesis and Crystal Structure of a New One-dimensional Double Helical-chain Polymer, {Zn（O2CC12H8CO2）（H2O）}n

1 INTRODUCTION Pronounced interest has been put in the field of coordination polymeric complexes owing to their fas- cinating molecular topologies[1～3] along with poten- tial applications as functional materials[4～6]. In par- ticular, complexes with helical structures attract much attention of scientists[7, 8] mainly due to their simi- larity to the structure of DNA molecule. To obtain new complexes, solv- and hydrothermal routes are currently used. In this way, the organic ligand act…     

Synthesis and Crystal Structure of a Mo-S Cluster Compound Coordinated by Isonicotinate

A cluster compound, Mo3S4(DTP)3(IN)(Py)·EtOH I (DTP = diethyl dithiophospha- te, IN = isonicotinate) has been rationally synthesized and characterized by single-crystal X-ray diffraction. The crystal belongs to the triclinic system, space group P1 with a = 13.6345(2), b = 13.7805(2), c = 14.5400(1) , α = 107.078(1), β = 113.380(1), γ = 96.310(1)o, C25H45Mo3- N2O9P3S10, Mr = 1218.96, V = 2315.75(5) 3, Z = 2, Dc = 1.748 g/cm3, μ = 1.399, F(000) = 1224, R = 0.0425 and wR = 0.1144 for 6335 observed reflections (I > 2σ(I)). 31P NMR spectrum has been measured with the resonance 110.050 and 108.783 (2:1).     

Dynamics of a stochastic system driven by cross-correlated sine-Wiener bounded noises

Nonlinear Dynamics - The sine-Wiener noise, as one new type of bounded noise and a natural tool to model fluctuations in dynamical systems, has been applied to problems in a variety of areas,...     

A polar luminescent Zn polymer containing an unusual noninterpenetrated utp net

A new Zn coordination polymer with the mixed ligands of 1,3,5-benzenetricarboxylate and 1,3-bis(4-pyridyl)propane has been hydrothermally synthesized, and an unusual distorted noninterpenetrated utp [or (10,3)-d] net has been defined.     

A Novel Copper（Ⅱ） Coordination Polymer with Figure-of-eight-shaped Channels Occupied by Flexible Monodentate and Bidentate N,N＇-bipyrdyl Ligands

A copper（Ⅱ） coordination polymer, [Cu3（HOA）2（bpp）4]n （1, HnOA = 3,3＇,4,4＇- oxidiphthalic acid, bpp = 1,3-bis（4-pyridyl） propane）, has been hydrothermally synthesized. The crystal structure is of monocl...