Synthesis,Crystal Structure,Spectroscopic Characterization,Thermal Stability and Magnetic Properties of a Dinuclear Copper(Ⅱ) Complex

A new copper(Ⅱ) complex [Cu2(MNA)2(2,2‘-bipy)2]·2.5H2 O with methy-5-norbornene-2,3-dicarboxylic acid(MNA) and 2,2’-bipyridine as ligands has been synthesized in the mixed solvents of DMF and water.It crystallizes in monoclinic,space group P 1,with a = 10.4191(11),b = 12.8883(13),c = 16.1114(16) ?,α = 70.8090(10),β = 80.568(2),γ = 77.440(2)o,V = 1984.3(4) ?3,Dc = 1.551 g/cm3,Z = 2,F(000) = 962,the final GOOF = 1.051,R = 0.0431 and w R= 0.0980.The crystal structure shows that the whole molecule consists of two independent dinuclear units,in which two copper ions are bridged by two μ2-η1:η0 3-carboxylate groups of MNA2-.The coordination environment of Cu(Ⅱ) ion is Cu O3N2,giving a distorted square pyramidal geometry.The spectroscopic characterization,thermal stability and magnetic properties of the complex were investigated.     

Synthesis, Crystal Structure and Characterization of a New Manganese(Ⅱ)Tetracarboxylate

By hydrothermal synthesis,a manganese(Ⅱ)tetracarboxylate [Mn(2,2'-bipyridi-ne)btec)o.5(H2O)]2n(H4btec=1,2,4,5-benzenetetracarboxylic acid)was obtained and characteri-zed by single-crystal X-ray diffraction,IR,elemental analysis and thermogravimetrie analysis.It crystallizes in triclinic,space group P(1),with a=7.721(4),b=8.905(5),c=10.712(6)(A),α=80.899(8),β=70.371(8),γ=78.201(8)°,z=2,V=675.8(7)(A)3,Mr=354.20,Dc=1.741 g/cm3,μ=1.007mm-1,F(000)=360,S=0.956,(△/σ)max=0.000,the final R=0.0490 and wR=0.1262.This compound presents an infinite 1D polymer featuring a double-chain structure.The Mn(Ⅱ)ion is five-coordinated.The four carboxylate groups of btec4- are all deprotonated and coordinated to four Mn atoms in a monodentate fashion,forming a 1D double chain structure with a cavity.Such chains are interconnected by π-π stacking interactions into 2D layers which are further interlinked into a supramolecular structure by hydrogen bonds.     

Synthesis,Crystal Structure and Characterization of a New Manganese（Ⅱ） Tetracarboxylate

By hydrothermal synthesis, a manganese（H） tetracarboxylate [Mn（2,2′-bipyridi- ne）（btec）0.5（HEO）]En （H4btec = 1,2,4,5-benzenetetracarboxylic acid） was obtained and characterized by single-crystal X-ray diffraction, IR, elemental analysis and thermogravimetric analysis. It crystallizes in triclinic, space group P1, with a = 7.721（4）, b = 8.905（5）, c = 10.712（6）A, a = 80.899（8）, β = 70.371（8）, y = 78.201（8）°, Z = 2, V= 675.8（7）A3, Mr= 354.20, De= 1.741 g/cm^3,μ = 1.007 mm^-1, F（000） = 360, S = 0.956, （△/σ）max = 0.000, the final R = 0.0490 and wR = 0.1262. This compound presents an infinite 1D polymer featuring a double-chain structure. The Mn（Ⅱ） ion is five-coordinated. The four carboxylate groups of btec4- are all deprotonated and coordinated to four Mn atoms in a monodentate fashion, forming a 1D double chain structure with a cavity. Such chains are interconnected by π-π stacking interactions into 2D layers which are further interlinked into a supramolecular structure by hydrogen bonds.     

Synthesis,Structure and Characterization of a Cd（Ⅱ） Polymer Based on 6-Hydroxynicotinic Acid

A new 2D layered Cd（Ⅱ） coordination polymer, [Cd（HnicO）（phen）（NOa）]n 1 （H2nicO = 6-hydroxynicotinic acid, phen = 1,10-phenanthroline）, has been hydrothermally synthesized and characterized by elemental analysis, IR, and single-crystal X-ray diffraction. It crystallizes in the monoclinic system, space group P21/c with a = 11.1107（2）, b = 13.7639（2）, c = 12.1457（4）A, β = 108.695（1）°, V = 1759.40（7） A^3 Z = 4, Mr= 492.72, F（000） = 976, Dc = 1.860 g/cm^3,μ= 1.289 mm^-1, the final R = 0.0205 and wR = 0.0550 for 3663 observed reflections （I 〉 2σ（I））. X-ray single-crystal structural analyses reveal that in complex 1, the HEnicO ligands and Cd（Ⅱ） nodes define the structure to be （4,4） 2D nets which are further assembled into the final 3D architecture via supramolecular interactions such as hydrogen bonds and aromatic interactions. Moreover, the solid-state luminescent study shows the title polymer possesses intense luminescent property at room temperature.     

Synthesis,Structure and Characterization of a Cd(Ⅱ) Polymer Based on 6-Hydroxynicotinic Acid

A new 2D layered Cd(II) coordination polymer,[Cd(HnicO)(phen)(NO3)]n 1(H2nicO = 6-hydroxynicotinic acid,phen = 1,10-phenanthroline),has been hydrothermally synthesized and characterized by elemental analysis,IR,and single-crystal X-ray diffraction.It crystallizes in the monoclinic system,space group P21/c with a = 11.1107(2),b = 13.7639(2),c = 12.1457(4) ,β = 108.695(1)°,V = 1759.40(7) 3,Z = 4,Mr = 492.72,F(000) = 976,Dc = 1.860 g/cm3,μ = 1.289 mm-1,the final R = 0.0205 and wR = 0.0550 for 3663 observed reflections(I > 2σ(I)).X-ray single-crystal structural analyses reveal that in complex 1,the H2nicO ligands and Cd(II) nodes define the structure to be(4,4) 2D nets which are further assembled into the final 3D architecture via supramolecular interactions such as hydrogen bonds and aromatic interactions.Moreover,the solid-state luminescent study shows the title polymer possesses intense luminescent property at room temperature.     

Synthesis and Crystal Structure of a Genistein-derived Compound

A genistein derivative, 5-hydroxy-3-（4-hydroxyphenyl）-7-（2-（piperidin- 1-yl）ethoxy）- 4H-chromen-4-one 3, was designed, prepared and structurally characterized by single-crystal X-ray diffraction. X-ray structure analysis reveals that 3 crystallizes in the orthorhombic system, space group Pbca, with a = 16.238（3）, b = 10.308（2）, c = 22.987（5）A, V = 3847.6（13）A3, Z = 8,μ= 0.093 mm^-1, Dc = 1.317 g/cm^3, F（000） = 1616, R = 0.0789 and wR = 0.1554 for 1463 observed reflections with I 〉 2σ（I）.     

Synthesis and Structural Characterization of a Polyphosphazeneas Photoconductivc Material

n the past decades, photoconductive polymers have received much attention either from atlindamental standpoint or for their potential uses ]' 2. The photoconductivities of manypolymers have been reported, such as phenylmethylpolysilane, poly(pphenylenevinylene ), N-poly(vinylcarbazole ), and so on.Recently we have synthesized a novel polyphosphazene that contains chargetransporting agent for photoconductive application. Polyphosphazene was selectedbecause of its photochemical stability, the go…     

Synthesis and Structural Characterization of a Polyphosphazeneas Photoconductive Material

The synthesis of a novel polyorganophosphazene that contains charge-transporting agent as side chains for photoconductive application is reported. Structural characterization for the high polymer was presented by 1H-NMR, infrared spectrosocopy, gel permeation chromatography ( GPC ).     

Synthesis,Crystal Structure and Norbornene Polymerization of a Palladium(Ⅱ) Complex Based on Phenoxyimine Ligand

The title complex N,O-bis{2-[[(2,6-benzhydryl-4-methylphenyl)imino]-methyl]-phenol}-palladium(II)(C_(80)H_(64)N_2O_2 Pd) has been synthesized by the reaction of 2-[[(2,6-benzhydryl-4-methylphenyl)imino]-methyl]-phenol with Pd(CH_3COO)_2, and characterized by IR spectrum and elemental analysis. The spatial structure of the complex has been verified by single-crystal X-ray diffraction analysis. The compound belongs to the monoclinic system, space group P21/n with a = 13.492(3), b = 16.924(3), c = 14.135(3) ?, β = 97.84(3)°, V = 3197.4(11) ?~3, C_(80)H_(64)N_2O_2 Pd, Mr = 1191.73, Z = 2, Dc = 1.238 Mg/m~3, μ = 0.339 mm~(-1), F(000) = 1240, T = 293(2) K, the final R = 0.0593 and wR = 0.1192(I 2s(I)). The compound showed excellent catalytic activity up to 1.130 × 10~7 g of PNB(mol of Pd)~(-1)h~(-1) for the addition polymerization of norbornene by using methylaluminoxane(MAO) as a cocatalyst.     

Hydrothermal Synthesis,Crystal Structure and Properties of a Lanthanum(Ⅲ) Complex Based on a N,O-Donor Ligand

A novel metal-organic complex [La(o-NCP)3]n(o-HNCP = 2-(2-carboxyphenyl)imidazo(4,5- f)(1,10)-phenanthroline) has been hydrothermally synthesized and characterized by elemental analysis, infrared analysis and X-ray single-crystal diffraction. The complex crystallizes in triclinic, space group P1 with a = 9.898(2), b = 16.193(3), c = 16.909(3) , α = 67.68(3), β = 80.85(3), γ = 78.78(3)o, V = 2448.2(8) A3, Z = 2, Mr = 1156.9, Dc = 1.569 g/cm3, μ = 0.71073 A, F(000) = 1164, GOOF = 1.065, the final R = 0.051 and wR = 0.123 for 8539 observed reflections with I 2A(I). The complex exhibits a one-dimensional double chain structure. The adjacent chains are further connected by N–H...N hydrogen bonds which help to form a two-dimensional supramolecular architecture. Furthermore, the complex exhibits excellent thermal stability and luminescent property.     

Crystal Structure,Spectroscopic Characterization,and Electrochemical and Thermal Stability Properties of a Dinuclear Nickel(Ⅱ) Complex

A new nickel(Ⅱ) complex Ni_2(L)_2(2,2?-bipy)2·5.5H_2 O with methy-bicycle[2.2.1]hept-5-ene-2,3-dicarboxylic acid(H2L) and 2,2?-bipyridine(2,2?-bipy) as ligands has been synthesized in the mixed solvent DMF and water(v:v = 5:2). It crystallizes in the triclinic space group P1 with a = 10.414(2), b = 12.884(3), c = 16.176(4) ?, α = 70.715(5), β = 80.599(5), γ = 77.383(6)o, V = 1989.4(8) ?3, Dc = 1.531 g/cm3, Z = 2, F(000) = 958, GOOF = 1.028, the final R = 0.0808 and w R = 0.2036. The crystal structure shows that the whole molecule consists of two independent dinuclear units, in which two nickel ions are bridged by two μ2-η1:η0 3-carboxylate groups of L2- anions. The coordination environment of Ni(Ⅱ) ion is Ni N_2O_3, giving a distorted square pyramidal geometry. The thermal stability and electrochemical properties of the complex were investigated.     

Hydrothermal Synthesis,Crystal Structure and Fluorescent Property of a Cd(Ⅱ) Complex Based on Biimidazole and Isonicotinate-N-oxide

A new complex [Cd(H2biim)2(H2O)2]·(ino)2·4H2O (H2biim = 2,2'-biimidazole, ino = isonicotinate-N-oxide) has been prepared and characterized by single-crystal X-ray diffraction analysis, IR and fluorescence spectra analysis. The crystal is of triclinic system, space group P1 with a = 7.5380(6), b = 8.0402(7), c = 13.5094(11) , α = 104.269(1), β = 93.604(1), γ = 98.349(1)°, V = 780.93(11) 3, Mr = 765.00, Dc = 1.627 g/cm3, F(000) = 390, μ = 0.776 mm-1 and Z = 1. The final R = 0.0322 and wR = 0.0825 for 7038 observed reflections with I 2σ(I) and R = 0.0341 and wR = 0.0832 for all data. The title complex exhibits an infinite chain-like structure through bridging isonicotinate-N-oxide. Strong interchain hydrogen bonds between isonicotinate-N-oxide and H2biim result in the robust 3-D supramolecular architecture. Moreover, the complex shows strong photoluminescence with emission maximum at λ = 401 nm upon λex = 330 nm.     

Synthesis,Characterization and Crystal Structure of a Trinuclear Diorganotin(Ⅳ) Complex with N'-acetylsalicylhydrazide

A diorganotin(IV) complex [(CH3)2Sn]3L2(L=N'-acetylsalicyl-hydrazide) 1 has been successfully synthesized and structurally characterized by elemental analysis,FT-IR,NMR(1H,13C and 119Sn) spectra and X-ray crystallography.The crystal structure belongs to an orthorhombic system,space group Pnma with a=8.5047(16),b=28.466(5),c=12.842(2) ,V=3109.1(10)3,C24H32N4O6Sn3,Mr=828.61,Dc=1.770 g/cm3,μ(Mo-Kα)=2.432 mm-1,Z=4,F(000)=1608,the final R=0.0378 and wR=0.0973 for 2125 observed reflections(Ⅰ 2σ(Ⅰ)).The complex is a trinuclear organotin(Ⅳ) containing five-and six-coordinated tin atoms.And weak but significant Sn···O intermolecular interactions lead to the assembly of complex into a 1D linear polymeric chain supramolecular framework.     

Composition,Structure, and Properties of a Composite Material Based on Polytetrafluoroethylene and Oxyfluoride Glass–Ceramic

The morphology, structure, phase composition, and properties of composite materials based on polytetrafluoroethylene and oxyfluoride glass–ceramic of the composition 18LiF–31SiO₂–19B₂O₃–24BaO–8TiO₂ were studied.     

Synthesis,Crystal Structure and Photoluminescence of a Copper(Ⅰ)-iodide Coordination Polymer Based on Polyimidazolate Ligand

A copper(Ⅰ)-iodide coordination polymer, namely {[Cu3 I3(Tipa)2]·3(DMF)}n(1), was synthesized from tetrahedral Cu4 I4(py)4 precursor and tris(4-(~1H-imidazol-1-yl)phenyl) amine)(Tipa) ligand in N,N-dimethylformamide(DMF) and methanol, and characterized by single-crystal X-ray diffraction. Its crystal crystallizes in monoclinic system, space group P2/c with a = 12.849(4), b = 12.034(3), c = 24.619(7) ?, β = 104.681(4)°, Mr = 1604.52, V = 3682.4(18) ?3, Z = 2, Dc = 1.447 g/cm3, μ = 2.163 mm-1, S = 0.975, F(000) = 1580, the final R = 0.0835 and wR = 0.2354 for 6471 observed reflections(I 2σ(I)). In compound 1, the Cu4 I4(py)4 was in-situ changed into another neutral CuI unit. Interestingly, two CuI units and two imidazole rings of the tipa ligands form a macrocyclic loop, which are further linked by another CuI unit and the third imidazole ring of the tipa ligands to produce a 1 D loop-containing chain. Solvent molecules were filled in the pore of the loop, which prevents the interpenetration of each other. The packing of these 1 D chains generates a 1 D channel along the a-axis, which is filled by disordered DMF molecules. In addition, compound 1 exhibits high thermal stability and strong photoluminescence at room temperature.     

Synthesis,Crystal Structure and Luminescent Property of a Zn(Ⅱ) Complex Based on 4-Imidazole-carboxylate Ligand

A new complex, [Zn(L)_2](1), has been hydrothermally prepared by the reaction of ZnSO_4·7H_2O with 2-(1H-imidazol-4-yl)benzoic acid(HL) incorporating 4-imidazolyl and carboxylate functional groups, and characterized by single-crystal X-ray diffraction, elemental analysis, IR spectroscopy and powder X-ray diffraction(PXRD). Complex 1 crystallizes in monoclinic, space group C2/c with a = 9.8349(9), b = 7.4947(7), c = 24.104(2) ?, β = 92.889(2)o, V = 1774.4(3) ?~3, Z = 4, C_(20)H_(14)N_4O_4 Zn, M_r = 439.72, D_c = 1.646 g/cm~3, μ = 1.422 mm~(-1), S = 1.003, F(000) = 896, the final R = 0.0395 and wR = 0.0874 for 11386 observed reflections(I 2σ(I)). Single-crystal X-ray structural analysis reveals that complex 1 features a two-dimensional(2D) framework with 6~3-hcb topology. Moreover, the photoluminescent property of 1 was also discussed.     

Hydrothermal Synthesis,Crystal Structure and Properties of a Lanthanum（III） Complex Based on a N,O-Donor Ligand①

A novel metal-organic complex [La（o-NCP）3]n （o-HNCP = 2-（2-carboxyphen- yl）imidazo（4,5- f）（1,10）-phenanthroline） has been hydrothermally synthesized and characterized by elemental analysis, infrared analysis and X-ray single-crystal diffraction. The complex crystallizes in triclinic, space group P1 with a = 9.898（2）, b = 16.193（3）, c = 16.909（3） A, a = 67.68（3）, β = 80.85（3）, y = 78.78（3）°, V= 2448.2（8） A3, Z = 2, Mr = 1156.9, Dc = 1.569 g/cm3,μ = 0.71073 A, F（000） = 1164, GOOF = 1.065, the final R = 0.051 and wR = 0.123 for 8539 observed reflections with I 〉 2o（I）. The complex exhibits a one-dimensional double chain structure. The adjacent chains are further connected by N-H...N hydrogen bonds which help to form a two-dimensional suprarnolecular architecture. Furthermore, the complex exhibits excellent thermal stability and luminescent property.     

Synthesis,Crystal Structure,and Photoluminescence Properties of One Novel D-π-D Type α-Cyanostilbene Derivative

Researches on α-cyanostilbene derivatives demonstrated them to be promising AIE or AIEE structural molecules and potential photoelectric materials. One novel α-cyanostilbene derivative, namely(E)-2-(4-butoxyphenyl)-3-(4-(diethylamino)phenyl)acrylonitrile(BPDPA), has been designed, synthesized and characterized. The crystalline structure of BPDPA has been studied in detail. The single-crystal X-ray diffraction revealed BPDPA crystallizes in triclinic space group P1, with a = 12.860(5), b = 13.327(5), c = 15.016(5) , α= 72.650(5), β = 66.969(5),γ = 62.897(5), Mr = 696.95, V = 2085.6(13) 3, Z = 2, Dc = 1.110 g/cm-3, μ = 0.068 mm-1, F(000) = 752, Rint = 0.0264, R(I 2σ(I)) = 0.0649, wR(I 2σ(I) = 0.1724, R(all data) = 0.1321, wR(all data) = 0.2158, completeness to theta = 25.00 is 99.4% and GOF = 1.067. Like most reported α-cyanostilbene derivatives, BPDPA possesses a somewhat twisted molecular structure. UV-Vis and FL measurements showed an obviously bathochromic effect of BPDPA with increasing the polarity of the solvents.