Hydrothermal Synthesis and Crystal Structure of a New Manganese（Ⅱ） Complex with 2,4-Pyridine-dicarboxylic Acid and 2,2′-Bipyridine Ligands

A new metal-organic complex [Mn2（PDC）2（bipy）2（H2O）2] （H2PDC = 2,4-pyridine-dicarboxylic acid, bipy = 2,2′-bipyridine） 1 has been hydrothermally synthesized and structurally characterized by elemental analysis, IR spectrum, TG and single-crystal X-ray diffraction. The compound crystallizes in triclinic, space group P ^-1 with a = 7.376（3）, b = 9.990（4）, c = 11.950（5） A^°, α= 75.217（5）, β = 78.052（5）, γ = 70.655（5）°, V = 796.0（5）A^°3, C34HE6Mn2N6O10, Mr = 788.49, De = 1.645 g/cm^3,μ（MoKa） = 0.866 mm^-1, F（000） = 235, Z = 1, the final R = 0.0425 and wR = 0.0700 for 1971 observed reflections （I 〉 2σ（I））. In the crystal structure, the manganese atom is six-coordinated by two carboxylate oxygen atoms from two different PDC ligands, one aqua ligand, and three nitrogen atoms from 2,2′-bipy and PDC ligands, giving a distorted octahedral geometry. It exhibits a three-dimensional supramolecular network defined by O-H…O hydrogen-bonding interactions.     

A 3-fold Interpenetrated lvt Cd(Ⅱ) Network Constructed from 4-[(3-pyridyl)methylamino]benzoate Acid

A new three-dimensional(3D) coordination polymer, [Cd(L)2H2O]n·5nH2O 1 with 4-[(3-pyridyl)methylamino]benzoate acid(HL), has been synthesized by slow evaporation solvent at room temperature, and structurally characterized by elemental analysis, IR spectrum, thermal analysis, fluorescence spectrum and single-crystal X-ray diffraction. Compound 1 crystallizes in the tetragonal system, space group I-4, with a = 20.7937(16), c = 13.515(2), V = 5843.5(11) 3, C26H34CdN4O10, Mr = 674.97, Dc = 1.534 g/cm3, μ(MoKα) = 0.808 mm-1, F(000) = 2768, Z = 8, the final R = 0.0276 and wR = 0.0691 for 5323 observed reflections(I 2σ(I)). The result of thermal analysis shows that 1 is stable under 290 ℃. Moreover, it exhibits blue photoluminescence at room temperature.     

Synthesis,Crystal Structure,Theoretical Calculations,and Photoluminescent Property of a Mn(Ⅱ) Complex Assembled by 5-Aminoisophthalic Acid and Phen Ligands

A coordination polymer[Mn_2(ctpt)_2(aic)_2]_n(1,ctpt=2-(4-chloro-phenyl)-1H-1,3,7,8-tetraaza-cyclopenta[l]phenanthrene,H_2aic=5-amino-isophthalic acid)was hydrothermally designed and synthesized.The complex was characterized by elemental analysis,IR spectroscopy,single-crystal X-ray diffraction,and thermogravimetric analysis(TGA).Each Mn(II)atom is linked by the aic ligands with neighbor Mn(II)atoms,forming an infinite one-dimensional(1D)double-chain structure.Complex 1 crystallizes in monoclinic,space group C2/c,with a=18.23(1),b=17.27(1),c=16.69(1)?,V=4814.0(7)?~3,C_(27)H_(16)Cl Mn N_5O_4,M_r=564.84,D_c=1.559 g/cm~3,μ(Mo Kα)=0.706 mm~(-1),F(000)=2296,Z=8,the final R=0.0487 and w R=0.1269(I2σ(I)).The 1D chain structure of complex 1 is stable below 458℃.In addition,to elucidate the essential electronic characters of this complex,theoretical calculation analysis of 1 was performed by the PBE0/LANL2DZ method in Gaussian 03 Program.     

Synthesis and Crystal Structure of a 1D Chained Coordination Polymer Containing One-dimensional Egg-like Channels： {[Cu2（C2O4）2（inta）4]（inta）}n （inta = Isonicotinamide）

A new one-dimensional copper coordination polymer chain has been prepared and fully characterized by single-crystal X-ray diffraction,elemental analyses and IR spectroscopy. The compound {[Cu2(C2O4)2(inta)4](inta)}n1 crystallizes in the triclinic system,space group P1,with a=8.4722(5),b=10.9825(6),c=11.6128(6),α=104.8050(10),β=102.5740(10),γ= 109.6890(10)o,V=927.18(9)3,Mr=929.79,Z=1,Dc=1.665 g/cm3,F(000)=475,μ=1.231 mm-1,R=0.0453 and wR=0.1185 for 3290 observed reflections (I > 2σ(I)). Of the compound,the Cu center is octahedrally coordinated with oxalate acting as a tetra-dentate ligand coordinated to the copper atom and each inta serving as a terminal ligand by employing only one N-donor to coordinate with the Cu center. An infinite {Cu2(C2O4)2}∞ chain is formed along the c axis. Furthermore,the 1D chains are held together via extensive hydrogen-bonding interactions to generate a three-dimensional network with 1D channels (ca. 5.491×11.507) where inta molecules are filled.     

Ba调变复合氧化物LaxBa1-xNiAl11O19-δ催化剂的制备和性能表征

制备了Ba调变Ni基复合氧化物催化剂LaxBa1-xNiAl11O19-δ,并通过XRD、XPS、TPR、TEM、BET和TGA等技术对催化剂的结构、性质和对甲烷二氧化碳重整制合成气反应的催化性能以及催化剂表面积炭情况进行了表征.结果表明,Ba调变后复合氧化物的微观结构随Ba调变量发生规律性变化,但结构的改变对催化剂的理化性质和催化性能均无明显影响,该系列Ni基复合氧化物都具有较好的催化活性以及较高的抗烧结和抗积炭性能,是甲烷二氧化碳重整制合成气反应选择氧化的良好催化剂.     

Hydrothermal Synthesis and Crystal Structure of a Znic(Ⅱ) Coordination Polymer Assembled by 4-Sulfophthalate and 4,4'-Bipyridine

A new organometallic coordinate polymer {[Zn2(4-sphth)2(4,4'-bpy)4(H2O)4][Zn(4,4'-bpy)2(H2O)4]}n·n[(4,4'-bpy)(H2O)4](4-sphth=4-sulfophthalic acid,4,4'-bpy = 4,4'-bipyridine) 1 has been hydrothermally synthesized and characterized by elemental analysis,IR,fluorescence spectrum and single-crystal X-ray diffraction.The complex crystallizes in monoclinic,space group C2/c with a=18.8659(13),b=23.0861(13),c=22.5449(14),β=107.4120(10)o,V=9369.3(10)3,Mr=1981.86,Dc=1.405 g/cm3,μ(MoKα)=0.891 mm-1,F(000)=4100,Z=4,the final R=0.0644 and wR=0.1615 for 5984 observed reflections(I 2σ(I)).Furthermore,compound 1 shows blue photoluminescent property at room temperature.     

配合物Pb(cbba)_2(phen)_2的水热合成、晶体结构与荧光性能研究(英文)

A new metal-organic complex Pb(cbba)2(phen)2 (1, H2cbba=2-(4′-chlorine-benzoyl)benzoic acid, phen= 1,10-phenanthroline) has been hydrothermally synthesized and structurally characterized by elemental analysis, IR, fluorescence spectrum and single-crystal X-ray diffraction. The compound crystallizes in orthorhombic, space group Pbcn with a=1.474 49(7) nm, b=0.953 90(4) nm, c=3.031 65(14) nm, V=4.264 1(3) nm3, C52H32Cl2N4O6Pb, Mr=1 086.91, Dc=1.693 g·cm-3, μ(Mo Kα)=4.141 mm-1, F(000)=2 144, Z=4, the final R=0.018 3 and wR=0.045 7 for 3 582 observed reflections (I2σ(I)). In the crystal structure, the lead atom is six-coordinated with two carboxylate oxygen atoms from different cbba ligands and four nitrogen atoms from different phen ligands, showing a distorted octahedral geometry. Furthermore, 1 shows yellow photoluminescent property at room temperature.     

一个由2-(4′-氯-苯甲酰基)苯甲酸和1,10-菲咯啉构筑的镍配合物的水热合成和晶体结构(英文)

<正>0 Introduction The rational design and synthesis of metal-directed supramolecular frameworks have received much attention in coordination chemistry because of their interesting molecular topologies and tremendous potential applications in host-guest chemistry     

一个二维锰配位聚合物[Mn2(L)2(1,3-BDC)2]·0.25H2O的合成、结构和表征

The title complex, [Mn₂(L)₂(1,3-BDC)₂]·0.25H₂O 1 (L=2-(2-chloro-6-fluorophenyl)-1H-imidazo[4,5-f][1,10]phenanthroline and 1,3-H₂BDC=1,3-benzenedicarboxylic acid) has been obtained by using hydrothermal synthesis and characterized by elemental analysis, IR and single-crystal X-ray diffraction. It crystallizes in monoclinic, space group P2₁/n with a=1.751 68(6) nm, b=1.160 14(4) nm, c=2.585 30(8) nm, β=104.331(4)°, V=5.090 3(3) nm³, Z=4, C₅₄H_28.50Cl₂F₂Mn₂N₈O_8.25, M_r=1 140.13, D_c=1.488 g·cm^-3, F(000)=2 306, μ(Mo Kα)=0.673 mm^-1, R=0.060 5 and wR=0.161 6. The compound 1 exhibits two-dimensional wavy layer structures, which are further stacked through π-π interactions to form three-dimensional supramolecular architectures. CCDC: 760201.     

高效外腔倍频产生426 nm激光的实验研究

利用与铯原子吸收线对应的852 nm半导体激光作为基频光,泵浦基于周期极化磷酸钛氧钾(PPKTP)晶体的环形腔,进行高效外腔谐振倍频并产生426 nm激光.在理论分析小角度环形腔内的热透镜效应基础上,发现晶体中等效热透镜中心位置并非在晶体的几何中心.在理论分析的基础上,实验上通过精密平移台精细调节PPKTP晶体在腔内位置,使得等效热透镜中心位置与谐振腔的腰斑位置重合,进而减小晶体热透镜效应导致的模式失配对倍频效率的影响.在泵浦功率为515 mW时产生了428 mW的426 nm激光输出,对应的倍频转换效率为83.1%.此高效倍频过程为制备与铯原子吸收线相匹配的非经典光场提供有效泵浦光,为推动量子非经典光场的应用以及量子信息科学的发展奠定基础.