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1.
A new zinc coordination polymer, [Zn2(bpp)(tpa)2H2O] 1 (bpp=1,3-bis(4-pyridyl)-propane and tpa=terephthalate) has been hydrothermally synthesized and characterized by elemental analysis, IR and single-crystal X-ray diffraction. X-ray crystal structure analysis reveals that complex 1 crystallizes in monoclinic, space group P2/c with a=18.348(2), b=10.9080(14), c=13.7924(18), β=98.156(2)°, V=2732.5(6)3 , Z=4, C29H24N2O9Zn2 , Mr=675.24, Z=4, F(000)=1376, Dc=1.641 mg/m3 , μ=1.815 mm-1 , the final R=0.0443 and wR=0.0769 for 2715 observed reflections (I>2σ(I)). The title complex exhibits a two-dimensional (4, 4) sheet structure which is further stacked through face-to-face π-π interactions between the monodentately coordinated pyridine ring of bpp ligand and the phenyl ring of terephthalate ligand to form a 3-dimensional supramolecular structure. Thermogravimetric analyses show that the host framework of the complex is thermally stable up to ca. 400 ℃.  相似文献   

2.
翁华森  林平  杜少武 《结构化学》2009,28(6):752-760
Three new cadmium or zinc arenedisulfonate complexes [Zn(bpp)2(L)]n 1, { [Cd(bpp)2(1,5-NDS)(H2O)2]·4H2O }n 2 and { [Cd(bpp)2(H2O2)2]·(1,5-NDS) } n 3 (L = 4,4′-bis(2-sulfonatostyryl)biphenyl, bpp = 1,3-di(4-pyd-dyl)propane and 1,5-NDS = 1,5-Naphthalenedisulfonate) have been synthesized from aqueous solution and structurally characterized by infrared spectroscopy, elemental analysis and single-crystal X-ray diffraction. Crystal data for complex 1: space group P21/n, a = 10.559(3), b = 13.138(4), c = 17.623(5)A^°, β = 100.852(3)°, V = 2400.9(12) A^°^3 Z = 2, Dc= 1.351 g/cm^3, F(000) = 1016, μ = 0.654 mm^-1, the final R = 0.0412 and wR = 0.0994; Crystal data for complex 2: space group P^-1, a = 8.5642(19), b = 10.076(3), c = 12.114(3) A^°, α = 81.623(7), β = 77.149(8), γ = 82.787(7)°, V = 1003.6(4) A^°^3 Z = 1, Dc= 1.495 g/cm^3, F(000) = 466,μ = 0.713 mm^3, the final R = 0.0241 and wR = 0.0713; Crystal data for complex 3: space group C2/c, a = 21.6024(15), b = 9.4608(5), c = 18.4656(11)A^°, β = 107.359(3)°, V= 3602.0(4)A^°^3 Z = 4, Dc= 1.533 g/cm^3, F(000) = 1704,μ = 0.780 mm^-1, the final R = 0.0229 and wR = 0.0572. The X-ray single diffraction reveals that 1 exhibits a 3D metal-organic framework formed from 2D Zn(bpp)2^2+ networks connected by L in the third dimension; 2 and 3 possess 3D and 2D architectures constructed from 1D polymeric chains through H-bond. Complexes 1-3 display photoluminescent emissions at 452 and 335 nm, respectively.  相似文献   

3.
Self-assembly of Ag(I) nitrate, 1,3-bis(4-pyridyl)propane (bpp) and phthalic acid monopotassium salt (KHphth) in CH3OH-H2O solution produced the title complex, {[Ag(bpp)]2(Hphth)(NO3)·(H2O)2}n, which was characterized by single-crystal X-ray diffraction, elemental analysis, IR spectrum, and photoluminescent spectrum. Single-crystal X-ray analysis revealed that the complex crystallizes in a monoclinic system, space group P21/c, with a = 15.4174(5), b = 8.6398(2), c = 25.2466(8) , β = 91.072(1)o, V = 3362.34(17) 3, Z = 4, C34H37N5O9Ag2, Mr = 875.43, Dc = 1.729 g/cm3, μ = 1.228 mm-1, F(000) = 1768, the final R = 0.0749 and wR = 0.1580 for 5754 reflections with I > 2σ(I). The Ag atom is coordinated by two N atoms from two bpp molecules in an approximately linear geometry. The Ag(I) ions are linked by the bpp molecules to form one-dimensional zigzag chains propagating along the c axis. The Hphth- and nitrate counter-ions are bridged by solvent water molecules through hydrogen bonds to generate a one-dimensional chain extending along the b axis. Electrostatic interactions between cations and anions, extensive hydrogen bonds and π-π interactions are responsible for the three-dimensional supramolecular structure. In the solid state, the compound exhibits blue photoluminescence with the maximum at 436 nm upon excitation at 344 nm.  相似文献   

4.
Self-assembly of Ag(Ⅰ) nitrate, 1,3-bis(4-pyridyl)propane (bpp) and phthalic acid monopotassium salt (KHphth) in CH3OH-H2O solution produced the title complex,{[Ag(bpp)]2(Hphth)(NO3)·(H2O)2}n, which was characterized by single-crystal X-ray diffraction,elemental analysis, IR spectrum, and photoluminescent spectrum. Single-crystal X-ray analysis revealed that the complex crystallizes in a monoclinic system, space group P21/c, with α =15.4174(5), b = 8.6398(2), c = 25.2466(8) (A), β = 91.072(1)°, V = 3362.34(17) (A)3, Z = 4,C34H37N5O9Ag2, Mr = 875.43, Dc = 1.729 g/cm3, μ = 1.228 mm-1, F(000) = 1768, the final R =0.0749 and wR = 0.1580 for 5754 reflections with I > 2σ(I). The Ag atom is coordinated by two N atoms from two bpp molecules in an approximately linear geometry. The Ag(Ⅰ) ions are linked by the bpp molecules to form one-dimensional zigzag chains propagating along the c axis. The Hphth-and nitrate counter-ions are bridged by solvent water molecules through hydrogen bonds to generate a one-dimensional chain extending along the b axis. Electrostatic interactions between cations and anions, extensive hydrogen bonds and π-π interactions are responsible for the three-dimensional supramolecular structure. In the solid state, the compound exhibits blue photoluminescence with the maximum at 436 nm upon excitation at 344 nm.  相似文献   

5.
A new 1D coordination polymer [Co(bpp)3Cl2(H2O)2]n 1 (bpp = 1,3-bis(4-pyridyl)-propane) was synthesized and characterized by elemental analysis,IR spectrum and single-crystal X-ray diffraction. The crystal belongs to the orthorhombic system,space group Ibca with a = 16.569(9),b = 17.240(10),c = 27.087(16) ,V = 7738(8) 3,Z = 8,Dc = 1.306 g/cm3,Mr = 760.65,λ(MoKa) = 0.71073 ,μ = 0.623 mm1,F(000) = 3192,the final R = 0.0678 and wR = 0.2011. The Co(II) atom is coordinated in a slightly distorted octahedral CoN4Cl2 geometry by two Cl atoms in the axial positions,four N atoms from the two bridging bpp ligands and two pendant bpp ligands. The CoN4Cl2 octahedra are connected by the bridging bpp ligands to form a 1D neutral coordination polymer chain. The chains are linked by face-to-face π-π interactions between adjacent pendant bpp ligands to give rise to a 3D supramolecular architecture. The photoluminescent investigation indicates that the emission of 1 is attributed to ligand-centered emission. The variable-temperature magnetic susceptibility measurement shows weak antiferromagnetic behavior in the complex.  相似文献   

6.
Four platinum(II) cationic complexes were prepared with the mer-coordinating tridentate ligands 2,6-bis(N-pyrazolyl)pyridine (bpp) and 2,6-bis(3,5-dimethyl-N-pyrazolyl)pyridine (bdmpp): [Pt(bpp)Cl]Cl.H(2)O; [Pt(bdmpp)Cl]Cl.H(2)O; [Pt(bpp)(Ph)](PF(6)); [Pt(bdmpp)(Ph)](PF(6)). The complexes were characterized by (1)H NMR spectroscopy, elemental analysis, and mass spectrometry, and the structures of the bpp derivatives were determined by X-ray crystallography. [Pt(bpp)Cl]Cl.2H(2)O: monoclinic, P2(1)/n, a = 11.3218(5) A, b = 6.7716(3) A, c = 20.6501(6) A, beta = 105.883(2) degrees, V = 1522.73(11) A(3), Z = 4. The square planar cations stack in a head-to-tail fashion to form a linear chain structure with alternating Pt...Pt distances of 3.39 and 3.41 A. [Pt(bpp)(Ph)](PF(6)).CH(3)CN: triclinic, P, a = 8.3620(3) A, b = 10.7185(4) A, c = 13.4273(5) A, alpha = 96.057(1) degrees, beta = 104.175(1) degrees, gamma = 110.046(1) degrees, V = 1072.16(7) A(3), Z = 2. Cyclic voltammograms indicate all four complexes undergo irreversible reductions between -1.0 and -1.3 V vs Ag/AgCl (0.1 M TBAPF(6)/CH(3)CN), attributable to ligand- and/or metal-centered processes. By comparison to related 2,2':6',2' '-terpyridine complexes, the electrochemical and UV-visible absorption data are consistent with bpp being both a weaker sigma-donor and pi-acceptor than terpyridine. Solid samples of [Pt(bpp)(Ph)](PF(6)) at 77 K exhibit a remarkably intense, narrow emission centered at 655 nm, whereas the other three complexes exhibit only very weak emission.  相似文献   

7.
The coordination polymer [Ni(dpa)(bpp)]n(H2dpa = 2,4'-biphenyl-dicarboxylic acid,bpp = 1,3-di(4-pyridyl)propane) was hydrothermally prepared and characterized by single-crystal X-ray diffraction,FTIR spectra,elemental analysis and thermal analysis.The crystal is of triclinic system,space group P1 with a = 12.516(5),b = 12.943(5),c = 15.130(5) ,α = 94.331(5),β = 91.827(5),γ = 108.382(5)°,C54H44N4Ni2O8,Mr = 497.18,V = 2315.3(15) 3,Dc = 1.426 g/cm3,F(000) = 1032,μ = 0.875 cm-1,Z = 2,the final R = 0.0496 and wR = 0.1100 for 5365 reflections with Ⅰ 2σ(Ⅰ).X-ray diffraction analysis reveals that the carboxylate group of 2,4'-diphenic acids acting as bridging ligands adopts two coordination modes:bis-mondentate and bidentate chelating.The compound exhibits a two-dimensional(6,3)-connected architecture.  相似文献   

8.
Cui P  Ren L  Chen Z  Hu H  Zhao B  Shi W  Cheng P 《Inorganic chemistry》2012,51(4):2303-2310
Four tetrazole-based three-dimensional (3D) metal-organic frameworks (MOFs), {[Cu(II)(btz)]·0.5H(2)O}(n) (1), [Cu(II)(btz)](n) (1'), {[Cu(II)(btz)]·0.5I(2)}(n) (1'·0.5I(2)), and [Cu(II)Cu(I)(2)(btz)(2)](n) (2) [H(2)btz = 1,5-bis(5-tetrazolo)-3-oxapentane)], have been successfully obtained and characterized by crystallography. Compound 1 features a chiral porous framework. The bulk crystallization of 1 is composed of enantiomers 1a (P4(1)) and 1b (P4(3)), which has been demonstrated by the crystal structure analyses of nine crystals of 1 randomly selected. The Cotton effect displayed in the solid-state circular dichroism spectrum of 1 is therefore attributed to enantiomeric excess rather than enantiopurity. The completely dehydrated phase of 1, that is, 1', can adsorb 0.5 I(2) molecule per formula unit to yield compound 1'·0.5I(2), which has been supported by single-crystal X-ray diffraction, elemental analysis, and thermogravimetric analysis. The locations of I(2) in the pores were unambiguously determined, and the interactions between I(2) molecules and the pore structures were investigated. Compound 2 crystallizes in an achiral C2/c space group. Interestingly, the formations of chiral 1 and achiral 2 significantly depend on the reaction temperature. Between 80 and 140 °C, we got compound 1 as the only product. At 150 °C, both 1 and 2 were in coexistence in the final product. From 160 to 180 °C, only compound 2 was obtained. More interestingly, treatment of the crystals of 1 or the mixture of 1 and 2 obtained at 150 °C in their mother liquor at 170 °C yielded the crystals of 2 in a single phase.  相似文献   

9.
童跃进  关怀民 《结构化学》1999,18(5):393-397
1 INTRODUCTIONAromaticpolyimidesareaclassofpolymersknownfortheirhightemperaturestability,excellentelectricalandmechanicalproperties.Thesepropertiesmakethemhighlydesirableforhighperformanceapplications〔1〕.However,traditionalpolyimidessuchasUPILEXRand…  相似文献   

10.
Solvothermal reaction of aromatic terphenyl-2,5,2?,5?-tetracarboxylic acid (H4qptc) ligand and the transitional metal cation of NiII in the presence of 1,3-bi(4-pyri- dyl)propane (bpp) affords one new coordination polymer, [Ni(qptc)0.5(bpp)(H2O)]n (1). The structure has been determined by single-crystal X-ray diffraction analysis and further characterized by elemental analysis, IR, TGA, and magnetism. The qptc4- acts as a H-shaped ligand linking the NiII centers together to form a 2D polymeric [Ni(qptc)0.5]n layer consisting of alternately arranged left- and right-handed helical chains. Each 2D polymeric [Ni(qptc)0.5]n layer is further linked through the bridging bpp ligands, thus resulting in a unique (3,4)- connected network with the (62.8)(62. 84) topology. The crystal of 1 crystallizes in monoclinic, space group C2/c with a = 16.088(5), b = 14.913(5), c = 18.849(6) ?, β = 100.982(4), V = 4439(2) ?3, Z = 8, C24H21N2NiO5, Mr = 476.14, Dc = 1.425 g/cm3, F(000) = 1976 and μ(MoKα) = 0.912 mm-1. The final R = 0.0584 and wR = 0.1131 for 3894 observed reflections with I > 2σ(I) and R = 0.1224 and wR = 0.1279 for all data.  相似文献   

11.
A new metal-organic coordination complex [Zn(H2BPTC)(phen)2]n·3nH2O (BPTC =3,3',4,4'-benzophenone tetracarboxylate, phen = 1,10-phenanthroline) 1 has been obtained from hydrothermal reaction and characterized by elemental analysis, IR, TG and single-crystal X-ray diffraction. In compound 1, the zinc cation is hexa-coordinated with two carboxylate oxygen atoms from one H2BPTC ligand and four nitrogen atoms from two different phen ligands, showing a slightly distorted octahedral geometry. Crystal data: C41H30N4O12Zn, Mr = 836.06, monoclinic,P21/c, a = 14.2714(9), b = 16.9386(10), c = 15.0151(9) (A),β = 101.3420(10)°, V= 3558.8(4) (A)3, Dc= 1.560 g/cm3,μ(MoKα) = 0.766 mm-1, F(000) = 1720, Z = 4, R = 0.0439 and wR = 0.1157 for 4123observed reflections with I > 2σ(I).  相似文献   

12.
Two new coordination polymers,[Co(BIPA)(bpp)](1) and [Zn(BIPA)(bpp)(H2O)](2)(H2BIPA = 5-bromoisophthalic acid,bpp = 1,3-di(4-pyridyl)propane) have been synthesized via hydrothermal reactions.The two compounds were characterized by elemental analysis,IR spectra,TG analysis and single-crystal X-ray determination.Compound 1 crystallizes in triclinic,space group P1 with a = 9.0316(13),b = 10.1179(14),c = 11.8884(17) ,α = 68.022(2),β = 84.749(2),γ = 77.791(2)°,V = 984.5(2) 3,Z = 2,C21H17BrN2O4Co,Mr = 500.21,Dc = 1.687 g.cm-3,μ = 2.932 mm-1,S = 0.981,F(000) = 502,R = 0.0440 and wR = 0.1357 for 3773 observed reflections with I > 2σ(I).Compound 2 crystallizes in the monoclinic system,space group P21/c with a = 7.8466(10),b = 27.483(4),c = 9.6583(13) ,β = 96.663(3)°,V = 2068.8(5) 3,Z = 4,C21H19BrN2O5Zn,Mr = 524.66,Dc = 1.685 g.cm-3,μ = 3.155 mm-1,S = 0.969,F(000) = 1056,R = 0.0441 and wR = 0.0517 for 4058 observed reflections with I > 2σ(I).The two compounds are constructed from the BIPA2-and bpp ligands but they exhibit different kinds of one-dimensional chain structures.In 1,the chains are composed of the Co(Ⅱ) ions and BIPA2-ligands,and the chains are further extended into a 2D framework structure by π...π interactions of the benzene rings from the BIPA2-ligands between the adjacent chains.In 2,the chains are made up of Zn(Ⅱ) ions and BIPA2-ligands through another fashion,and the chains are further linked via hydrogen bonding interactions to yield a two-dimensional supramolecular layer structure.Furthermore,the bpp ligand features two kinds of different coordination modes in the two compounds.  相似文献   

13.
周燕  韩磊  潘建国  李星 《结构化学》2009,28(3):348-352
A new 1D zigzag chain coordination polymer, { [Mn(bpp)(bac)2]·(CHaCN)}n 1 (bpp = 1,3-bis(4-pyridyl)propane, Hbac = benzoylacetone), has been synthesized and characterized by FT-IR spectroscopy, thermal analysis and X-ray single-crystal diffraction. In the molecular structure, all Mn atoms locate in an octahedral geometry. The guest CH3CN molecules are included in the 1D channels of the 3D packing structure of 1. Crystal data: C35H35MnNaO4, Mr = 616.60, monoclinic, space group P211c, a = 17.691(4), b = 18,955(4), c = 9.712(6) A, β = 93.91(3)°, V = 3249.31(1) A^3, Z = 4, Dc = 1.260 g/cm^3, F(000) = 1292, 20max = 54.9°, μ = 0.447 mm^-1, the final S = 1.020, R = 0.0693 and wR = 0.1497.  相似文献   

14.
1,1',5,5'-Tetramethy1-2,2'-diphenyl-4,4'-[i-phenylenebis(methylidynenitrilo)]di1H-pyrazol-3(2H)-one was synthesized and characterized by X-ray single-crystal diffraction analysis. The crystal crystallizes in monoclinic, space group P21/c with a = 6.1375(1), b =24.6571(4), c = 17.7487(3)(A), β = 94.781(1)°, V= 2676.62(8)(A)3, C30H28N6O2, Mr= 504.58, Z = 4,Dc = 1.252 g/cm3, F(000) = 1064, μ = 0.081 mm-1, R = 0.0463 and wR = 0.1153 (I > 2σ(Ⅰ)).Theoretical studies of the title compound were carried out by density functional theory (DFT) BLYP method, using ADF program package. It indicates that N(26) and N(41) are active sites of the title compound.  相似文献   

15.
1 INTRODUCTION The coordination polymers have attracted much attention in recent years owning to their fascinating molecular structures and potential applications as catalysts, luminescent materials and magnetic materials[1~6]. Consequently, numerous new com- pounds have been produced mostly by using appro- priate organic ligands, especially bridging ligands containing multi-dentate oxygen, nitrogen, or sulfur donors to coordinate with the transition metal centers[7~10]. Among them, 1,4…  相似文献   

16.
基于柔性吡啶基配体和钒酸盐,合成得到了一个非中心对称的杂化化合物[CuⅠ4(bpp)4(VⅤ6O17)](1)(bpp=1,3-二(4-吡啶基)丙烷),并通过元素分析、红外光谱、X-射线单晶衍射、热重分析等测试对其进行了表征。晶体数据表明该化合物属于正交晶系,Pca21空间群。在化合物1中,一维链状的多钒酸根与[CuⅠ(bpp)]单元通过Cu-O键连接形成沿ab平面的层,这些层进一步通过Cu髣…Cu髣弱相互作用(Cu髣…Cu髣距离为0.281nm)连接成一个三维的框架结构。  相似文献   

17.
1 INTRODUCTION Nitronyl nitroxides, independently or in combina- tion with metal ions, have been one of the most wi- dely studied systems in molecular magnetism for understanding radical-radical or metal-radical inte- ractions as well as for synthesizing organic ferroma- gnets and metal-radical magnetic materials[1~4]. Up to now, lots of metal-radical complexes have been reported[5~8]. On the other hand, cooperative inter- molecular interactions, such as coordination bonds, hydrogen bon…  相似文献   

18.
朱志博  路新卫 《结构化学》2010,29(3):465-470
A new 1D coordination polymer,{[Mn2(4',4-hbc)4(4',4-Hhbc)2(H2O)]·H2O}n(4',4-Hhbc=4'-hydroxyl-biphenyl-4-carboxylic acid),has been hydrothermally synthesized and struc-turally characterized by elemental analysis,IR spectroscopy and single-crystal X-ray diffraction.The crystal belongs to the monoclinic system,space group C2/c with a=52.421(10),b=7.5388(15),c=16.478(3),β=106.12(3)°,V=6256(2)3,Z=4,C78H62Mn2O21,Mr=1445.16,Dc=1.534g/cm3,μ(MoKα)=0.490mm-1,F(000)=2992,R=0.0764 and wR=0.2006 for 2984 observed reflections with I2σ(I).X-ray diffraction analyses reveal that the title compound is a one-dimensional infinite chain,in which the MnⅡ atom adopts a distorted octahedral geometry coordinated by four 4',4-hbc ligands,one 4',4-Hhbc ligand and one water molecule.Furthermore,the luminescent property of title compound was investigated.  相似文献   

19.
Tong ML  Wu YM  Ru J  Chen XM  Chang HC  Kitagawa S 《Inorganic chemistry》2002,41(19):4846-4848
A fascinating 3D pseudo-polyrotaxane architecture with 1D polymeric [Ag(bpp)](n) chains penetrating 2D (6,3) [Ag(2)(bpp)(2)(ox)](n) sheets and a 3D coordination network constructed with 2D infinite [Ag(ppa)](n) beta-sheetlike layers pillared by ox ligands (bpp = 1,3-bis(4-pyridyl)propane; ppa = N-(4-pyridinylmethyl)-4-pyridinecarboxamide; ox = oxalate) have been prepared by utilizing flexible pyridyl-type ligands and have been crystallographically characterized. Crystal data for 1: monoclinic, space group C2/c, a = 7.619(2) A, b = 19.781(4) A, c = 26.799(5) A, beta = 94.720(10) degrees, U = 4025.2(15) A(3), and Z = 4. Crystal data for 2: monoclinic, space group C2/c, a = 28.947(8) A, b = 8.617(3) A, c = 16.307(6) A, beta =121.07(1) degrees, U = 3484(2) A(3), and Z = 4.  相似文献   

20.
Hydrothermal reaction of 3-aminopyridine, NaSCN and cadmium cation led to the formation of complex [Cd(3-ampy)(NCS)2]n 1 (3-aminopyridine = 3-ampy), and its crystal structure was determined by X-ray diffraction analysis. The crystal data for compound 1: C7H6N4S2Cd, orthorhombic Fdd2, Mr = 322.68, Z = 16, a = 26.884(4), b = 27.445(3), c = 5.8671(7)A, V = 4329.0(10) A3 Dc= 1.974 g/cm^3, μ= 2.368 mm^-1, F(000) = 2496, R = 0.0203 and wR = 0.0491 for 2347 observed reflections with Ⅰ 〉 2σ(Ⅰ), and absolute structure parameter is 0.00(3). X-ray diffraction reveals that the compound consists of interesting two-dimensional wave sheet structure. The photoluminescence spectrum and interesting second-order nonlinear optical (NLO) property for compound 1 have also been studied.  相似文献   

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