期刊文献+
共找到1,133篇文章
< 1 2 57 >
每页显示 20 50 100
Syntheses,crystal structures,and quantum chemistry calculation of two Ni(Ⅱ)coordination polymers
1
作者 LI Xiumei HUANG Yanju +1 位作者 LIU Bo PAN Yaru 《无机化学学报》 SCIE CAS CSCD 北大核心 2024年第10期2031-2039,共9页
Two new coordination polymers,[Ni(Hpdc)(bib)(H_(2)O)]_(n)(1)and{[Ni(bib)_(3)](ClO_(4))_(2)}_(n)(2),were prepared by mixing Ni^(2+),3,5⁃pyrazoledicarboxylic acid(H3pdc)/p⁃nitrobenzoic acid and 1,4⁃bis(imidazol⁃1⁃ylmeth... Two new coordination polymers,[Ni(Hpdc)(bib)(H_(2)O)]_(n)(1)and{[Ni(bib)_(3)](ClO_(4))_(2)}_(n)(2),were prepared by mixing Ni^(2+),3,5⁃pyrazoledicarboxylic acid(H3pdc)/p⁃nitrobenzoic acid and 1,4⁃bis(imidazol⁃1⁃ylmethyl)butane(bib)by a hydrothermal method,respectively.X⁃ray crystallography reveals a 2D network constructed by six⁃coordinated Ni(Ⅱ)centers,bib,and Hpdc2-ligands in complex 1,while a 2D network is built by Ni(Ⅱ)and bib ligands in 2.Furthermore,the quantum⁃chemical calculations have been performed on‘molecular fragments’extracted from the crystal structure of 1 using the PBE0/LANL2DZ method in Gaussian 16 and the VASP program.CCDC:2343794,1;2343798,2. 展开更多
关键词 coordination polymer nickel(Ⅱ)complex crystal structure quantum⁃chemical calculation
下载PDF
Alkylation of naphthalene with n-butene catalyzed by liquid coordination complexes and its lubricating properties 被引量:2
2
作者 Chen Chen Qiong Tang +4 位作者 Hong Xu Lei Liu Mingxing Tang Xuekuan Li Jinxiang Dong 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2021年第11期306-313,共8页
With the development of coal chemical industry,large amounts of naphthalene and n-butene are produced,and converting them into high value-added products through alkylation has gained particular importance and interest... With the development of coal chemical industry,large amounts of naphthalene and n-butene are produced,and converting them into high value-added products through alkylation has gained particular importance and interest.In this work,liquid coordination complexes(LCCs)were used as acid catalysts for the first time in the naphthalene alkylation reaction under mild conditions to obtain multibutylnaphthalenes with high yield.Various reaction conditions were thoroughly investigated.The LCC consisting of urea and AlCl_(3) showed excellent catalytic performance under optimal reaction conditions,giving 100%conversion of naphthalene and 99.66%selectivity towards multi-butylnaphthalenes.Combining the catalyst properties and catalytic results,a plausible reaction mechanism was proposed.The lubricating properties of the synthesized products were investigated for their potential application as lubricating base oils.The synthesized multi-butylnaphthalenes showed comparable physicochemical properties and tribological performances as the commercial cycloalkyl base oil. 展开更多
关键词 NAPHTHALENE N-BUTENE Alkylation reaction Liquid coordination complexes SYNTHESIS Lubricating base oils
下载PDF
Crystal Structure and Luminescent Property of a Coordination Complex Constructed with Pyrazine and 1,4-Phenylenediacetic Acid 被引量:1
3
作者 徐波 李玲 +1 位作者 李杰 李村成 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2014年第12期1826-1830,共5页
A new coordination complex [Cd(pda)(pyz)(H2O)2]n(1, H2 pda = 1,4-phenylenediacetic acid, pyz = pyrazine) have been synthesized and structurally characterized. Crystal data for the title complex are as follows: orthorh... A new coordination complex [Cd(pda)(pyz)(H2O)2]n(1, H2 pda = 1,4-phenylenediacetic acid, pyz = pyrazine) have been synthesized and structurally characterized. Crystal data for the title complex are as follows: orthorhombic system, space group Ccmb with a = 11.5245(3) b = 19.5069(5) c = 11.4231(3) A, V = 2568.00(12) A3, Mr = 188.31, Z = 16, F(000) = 1480, Dc = 1.948 g/cm3, μ(Mo Kα) = 1.725 mm-1, R = 0.0195 and w R = 0.0462 for 1357 observed reflections with I 】 2σ(I). In the title complex, the central Cd(II) ion is located in a distorted octahedral coordination environment. Two Cd(II) ions are bridged by two pda2- ligands and one pyz ligand to form a bi-loop structure. Luminescent property of the complex has also been studied. 展开更多
关键词 coordination complex crystal structure LUMINESCENCE 1 4-phenylenediacetic acid
下载PDF
A novel decomposition and coordination algorithm for complex networks and its application to power grids 被引量:3
4
作者 Xiangping NI Shengwei MEI 《控制理论与应用(英文版)》 EI 2008年第1期53-58,共6页
To analyze and control complex networks effectively, this paper puts forward a new kind of scheme, which takes control separately in each area and can achieve the network’s coordinated optimality. The proposed algori... To analyze and control complex networks effectively, this paper puts forward a new kind of scheme, which takes control separately in each area and can achieve the network’s coordinated optimality. The proposed algorithm is made up of two parts: the first part decomposes the network into several independent areas based on community structure and decouples the information flow and control power among areas; the second part selects the center nodes from each area with the help of the control centrality index. As long as the status of center nodes is kept on a satisfactory level in each area, the whole system is under effective control. Finally, the algorithm is applied to power grids, and the simulations prove its effectiveness. 展开更多
关键词 复杂网络 网络结构 调和算法 电力网络
下载PDF
Thermochemical Study on Coordination Complex of Neodymium Trichloroacetic Acid with 8-Hydroxyquinoline
5
作者 李强国 屈松生 刘义 《Journal of Rare Earths》 SCIE EI CAS CSCD 2002年第5期443-448,共6页
Two coordinate reactions, NdCl 3·6H 2O(s) +3CCl 3COOH(s)( or TCA) =Nd(TCA) 3·3H 2O(s) +3HCl(g) +3H 2O(l) and Nd(TCA) 3·3H 2O(s) +2C 9H 7NO(s)= Nd(TCA)(C 9H 6NO) 2 (s) +2CCl 3COOH(s) +3H ... Two coordinate reactions, NdCl 3·6H 2O(s) +3CCl 3COOH(s)( or TCA) =Nd(TCA) 3·3H 2O(s) +3HCl(g) +3H 2O(l) and Nd(TCA) 3·3H 2O(s) +2C 9H 7NO(s)= Nd(TCA)(C 9H 6NO) 2 (s) +2CCl 3COOH(s) +3H 2O(l), were studied by the classical solution calorimetry at 298.15K. The molar dissolution enthalpies of the reactants and the products in certain solvent (the first reaction in 1 mol·L -1 HCl, the second in a mixed solution consisting of absolute ethyl alcohol, dimethyl sulfoxide and 4 mol·L -1 HCl ) were measured by using an isoperibol calorimeter at 298.15K . From the results and other auxiliary quantities, the standard molar formation enthalpies of [Nd(TCA) 3·3H 2O,s,298.15K] and [Nd(TCA) (C 9H 6NO) 2 ,s, 298.15K] are determined as Δ fH m °[Nd(TCA) 3·3H 2O,s,298.15K]= -3053.3 kJ·mol -1 and Δ fH m° [Nd(TCA) (C 9H 6NO) 2 ,s, 298.15K] = -1355.6 kJ·mol -1 . 展开更多
关键词 rare earths neodymium chloride six hydrate trichloroacetic acid 8 hydroxyquinoline coordination complex THERMOCHEMISTRY
下载PDF
The First Hybrid Wells-Dawson-type Polytungstate Monosupported by Cd-coordination Complex via Di-bridging O-atom 被引量:2
6
作者 陈武华 张著森 +1 位作者 胡志彪 宓锦校 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2014年第10期1550-1559,共10页
Polyoxometalates(POMs) with Cd-coordination complexes acting as supporting units are rarely reported. The linkage of the supporting units with inorganic building block(polyanion) is generally established on termin... Polyoxometalates(POMs) with Cd-coordination complexes acting as supporting units are rarely reported. The linkage of the supporting units with inorganic building block(polyanion) is generally established on terminal O-atoms, but scarcely via bridging O-atoms. By introducing liquid small organic molecule(pyridine, C5NH5) as assistant "structure-directing agent", we obtained a novel organic-inorganic hybrid polytungstate,(Hpy)4[Cd(phen)2(P2W18O62)]·nH2O(1, n ≈ 3, py = pyridine, phen = 1,10-phenanthroline), under hydrothermal conditions. The single-crystal X-ray diffraction analysis shows that 1 is the first compound containing an asymmetric heteropolyanion, [Cd(phen)2(P2W18O62)]4–, a Wells-Dawson-type polyanion monosupported by Cd-coordination complex via di-bridging O-atoms. 展开更多
关键词 hybrid compound Wells-Dawson-type Cd-coordination complex monosupported structure bi-bridging O-atom
下载PDF
Investigations of the electron paramagnetic resonance parameters and the tetragonal local structure for (VCl_6)^(4-) coordination complex in MCl:V^(2+) (M=Na,K,Rb) systems
7
作者 祁林 邝小渝 +2 位作者 柴瑞鹏 段美玲 张彩霞 《Chinese Physics B》 SCIE EI CAS CSCD 2009年第4期1586-1593,共8页
By simulating the electron paramagnetic resonance (EPR) and optical spectra on the basis of the 120 × 120 complete energy matrix, this paper determines the local lattice structure parameters R1 and R2 for MCl... By simulating the electron paramagnetic resonance (EPR) and optical spectra on the basis of the 120 × 120 complete energy matrix, this paper determines the local lattice structure parameters R1 and R2 for MCl:V2+ (M=Na, K, Rb) systems at 77K, 195 K and RT (room temperature 295 K or 302 K), respectively. The theoretical results indicate that there exists a compressed distortion in MCl:V2+ systems. Meanwhile, it finds that the structure parameters R1, R2 and |△R|( = R1 - R2) increase with the rising temperature. Subsequently, from the analysis it concludes that the relation of EPR parameter D vs. △R is approximately linear. Finally, the effects of orbital reduction factor k on the g factors for the three systems have been discussed. 展开更多
关键词 complete energy matrix EPR parameters (VCl6)4- coordination complex local structure
下载PDF
Syntheses,Structures,and Properties of Two Cobalt(Ⅱ)Coordination Complexes Based on(Fluorene-9,9-diyl)dipropanoic Acid and 1,3-Bis(imidazol-1-yl)butane Ligands
8
作者 田雨滨 王梦 +4 位作者 张文 宋楠楠 宋新建 胡卫兵 冯驸 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2018年第7期1139-1145,共7页
Two new cobalt(II) coordination complexes, namely [Co(HL)2(biim)(H2O)2]n·n H2O(1) and [Co(Et L)2(biim)]n·3 n(H2O)·2 n(Et HL)(2)(H2L =(fluorene-9,9-diyl)dipropanoic acid, biim = 1,... Two new cobalt(II) coordination complexes, namely [Co(HL)2(biim)(H2O)2]n·n H2O(1) and [Co(Et L)2(biim)]n·3 n(H2O)·2 n(Et HL)(2)(H2L =(fluorene-9,9-diyl)dipropanoic acid, biim = 1,3-bis(imidazol-1-yl)butane), have been synthesized using the same starting reactants but different solvent medium. The two complexes exhibit distinctly different structures. Compound 1 exhibits a one-dimensional linear chain structure. However, complex 2 reveals a one-dimensional zigzag chain structure. Thermogravimetric analyses(TGA) and luminescent properties of these two complexes have been discussed. 展开更多
关键词 coordination complexes FLUORENE luminescent properties
下载PDF
Hetero-bimetallic Complex of a 2D Coordination Network Constructed by Sodium Ion and p-Sulfonatothiacalix[4]arene
9
作者 郭倩玲 屈一新 马淑兰 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2008年第7期767-772,共6页
A 2D coordination polymer built by sodium ion and water-soluble p-sulfonatothiacalix[4]arene of trivalent yttrium complex [Na(H2O)2Y(H2O)6(DMF) (p-sulfonatothiaca lix[4]arene)]-9H2O is reported. The complex be... A 2D coordination polymer built by sodium ion and water-soluble p-sulfonatothiacalix[4]arene of trivalent yttrium complex [Na(H2O)2Y(H2O)6(DMF) (p-sulfonatothiaca lix[4]arene)]-9H2O is reported. The complex belongs to the monoclinic system, space group P2 1/c, with a = 16.703(3), b = 17.819(4), c = 17.357(4)A, β = 106.23(3)°, Z = 4, V = 4960.0(17)A^3, Mr = 1304.08, Dc = 1.746 g/cm^3,μ= 1.624 mm^-1, F(000) = 2688, the final R = 0.0398 and wR = 0.1132 for 7534 observed reflections with I 〉 2σ(I). One yttrium(Ⅲ) ion is coordinated by the thiacalixarene ligand via the sulfonato group, and also ligated by an oxygen atom of a DMF molecule occupying the cavity of thiacalixarene and six aqua ligands. 展开更多
关键词 arene hetero-bimetallic complex 2D coordination network crystal structure
下载PDF
Syntheses and Crystal Structures of Three Coordination Complexes Based on Ln(Ⅲ) and mpca-Ligand
10
作者 徐基贵 卢振中 +1 位作者 卓馨 郑和根 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2010年第8期1213-1218,共6页
Three complexes obtained by the reaction of Pr(Ⅲ) or Nd(Ⅲ) salts with 5-methyl-2-pyrazinecarboxylic acid(Hmpca) are structurally determined by single-crystal X-ray diffraction.Complex [Pr(mpca-)3(H2O)2]2&#... Three complexes obtained by the reaction of Pr(Ⅲ) or Nd(Ⅲ) salts with 5-methyl-2-pyrazinecarboxylic acid(Hmpca) are structurally determined by single-crystal X-ray diffraction.Complex [Pr(mpca-)3(H2O)2]2·6H2O(1) is composed of dinuclear Pr(Ⅲ) units with two metal centers bridged by two anionic mpca-ligands in a κ^3O,O':O' bridging mode.Complexes [Pr(mpca-)3]n(2) and [Nd(mpca-)3]n(3) are isostructures,and they consist of polymeric chains based on Ln(Ⅲ) and mpca-ligands.Each pair of adjacent metal centers is linked by three mpca-molecules in a κ^3N,O:O bridging mode. 展开更多
关键词 crystal structure lanthanide complex coordination polymer
下载PDF
Synthesis and Crystal Structure of a 1-D Chain Coordination Complex {[Mn_2(HCAM)_3(H_2bipy)]·5H_2O}_n
11
作者 孙亚光 荣书婷 +4 位作者 吴勇丽 于菀 王传胜 张万忠 高恩君 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2009年第9期1131-1135,共5页
The 1-D chain coordination complex of {[Mn2(HCAM)3(H2bipy)]·5H2O}n (H3CAM = 4-hydroxypyridine-2,6-dicarboxylic acid, bipy = 4,4'-bipyridine) has been synthesized by the reaction of 4-hydroxypyridine-2,6-di... The 1-D chain coordination complex of {[Mn2(HCAM)3(H2bipy)]·5H2O}n (H3CAM = 4-hydroxypyridine-2,6-dicarboxylic acid, bipy = 4,4'-bipyridine) has been synthesized by the reaction of 4-hydroxypyridine-2,6-dicarboxylic acid, 4,4'-bipyridine and manganese carbonate under hydrothermal conditions, and its crystal structure was determined by X-ray diffraction method The crystal belongs to the monoclinic system, space group P21/n with a = 10.110(2), b = 20.159(4), c = 17.861(4)A,β = 99.67(3)°, V = 3.5884(12) nm3, Mr= 901.47, Z = 4, Dc= 1.669 g.cm^-3, μ= 0.798 mm^-1, F(000) = 1840, the final R = 0.0713 and ωR = 0.1853. The complex forms a 1-D chain bridged by HCAM, protonated 4,4-bipyridines link the 1-D chains to construct 2-D networks via N-H...O hydrogen bonds, and networks are further extended via π-π stacking and hydrogen bonds into 3-D supramolecular framework. 展开更多
关键词 coordination complex Mn(Ⅱ crystal structure
下载PDF
Synthesis and Crystal Structure of Two Coordination Complexes Based on H_(2)dpa and Tmd Ligands
12
作者 卓馨 徐基贵 +1 位作者 张莉 刘超 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2010年第11期1743-1748,共6页
Two new transition metal compounds, [Mn(dpa)2(tmd)2]n (1, H2dpa = 4-hydroxy-phenyl-acetic acid, tmd = 4,4-trimethylenedipyridine) and [Co4(dpa)6(tmd)4(H2O)4]n·nH2O·nCl2 (2), have been synthesiz... Two new transition metal compounds, [Mn(dpa)2(tmd)2]n (1, H2dpa = 4-hydroxy-phenyl-acetic acid, tmd = 4,4-trimethylenedipyridine) and [Co4(dpa)6(tmd)4(H2O)4]n·nH2O·nCl2 (2), have been synthesized by hydrothermal synthesis. Compound 1 crystallizes in the monoclinic system, space group P21/n with a = 9.828(3), b = 17.493(5), c = 11.616(4), β = 110.146(6)o, V = 1874.9(10)3, C42H42MnN4O6, Mr = 753.74, Z = 2, Dc = 1.335 g/cm3, μ = 0.406 mm-1, F(000) = 790, the final R = 0.1047 and wR = 0.2021 for 2698 observed reflections (I 〉 2σ(I)). Compound 2 crystallizes in the monoclinic system, space group P21/c with a = 11.7214(13), b = 17.1582(19), c = 24.625(3), β = 103.055(3)o, V = 4824.4(9)3, C100H104Cl2Co4N8O23, Mr = 2094.55, Z = 2, Dc = 1.443 g/cm3, μ = 0.809 mm-1, F(000) = 2180, the final R = 0.0550 and wR = 0.0673 for 4104 observed reflections (I 〉 2σ(I)). These complexes were characterized by elemental analysis, IR spectroscopy, and X-ray single-crystal diffraction. The structural analyses show that the two compounds are both one-dimensional chain structures. However, compounds 1 and 2 form threedimensional supramolecular structures by hydrogen bonds, respectively. 展开更多
关键词 crystal structure coordination complex network structure
下载PDF
Syntheses of Coordination Compounds of 2-Amino-3-Methylbutanoic Acid Their Mixed Ligand Complexes and Antibacterial Activities
13
作者 Temitayo O. Aiyelabola Iyanuoluwa E. Okunade +1 位作者 Johan H. L. Jordaan Daniel P. Otto 《Advances in Biological Chemistry》 2020年第3期67-85,共19页
<span style="font-family:Verdana;">Coordination compounds of 2-amino-3-methylbutanoic acid were synthesized with chromium(III) and oxovanadium(IV) ions. M:L;1:2. Adducts of these complexes using 1,10-p... <span style="font-family:Verdana;">Coordination compounds of 2-amino-3-methylbutanoic acid were synthesized with chromium(III) and oxovanadium(IV) ions. M:L;1:2. Adducts of these complexes using 1,10-phenantroline and ethylenediamine were further synthesized, M:L, (1:2). These compounds were characterized using electronic, infra-red spectrophotometry, magnetic susceptibility measurement and percentage metal analyses. The zones of inhibition and minimum inhibitory concentrations of the compounds against eight microbes were studied. The results obtained indicated an octahedral geometry for the Cr(III) complexes, indicative of additional coordination of two water molecules. On the other hand a square pyramid geometry was obtained for the binary oxovanadium complex and its 1,10-phenantroline adduct. However</span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">,</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> for the oxovanadium ethylenediamine adduct a distorted octahedral geometry was proposed. The result for the antibacterial studies indicated that both mixed ligand complexes of 1,10-phenantroline exhibited good antibacterial activity, and in some cases better activity than the standard, streptomycin.</span></span></span> 展开更多
关键词 coordination Compounds 2-Amino-3-Methylbutanoic Acid Mixed Ligand complexes Minimum Inhibitory Concentration 1 10-Phenantroline ETHYLENEDIAMINE
下载PDF
Synthesis and Characterization of a Novel Coordination Complex Based on Fluorescein
14
作者 张冠华 吴小园 +2 位作者 王洒洒 蒋晓瑜 卢灿忠 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2018年第1期113-118,共6页
A novel coordination complex,{[Cd)2(C(20)H(10)O5)2(H2O)4]·10H2O}n,has been synthesized based on fluorescein(2-(6-hydroxy-3-oxo-3 H-xanthen-9-yl) benzoic acid) and systematically characterized by elem... A novel coordination complex,{[Cd)2(C(20)H(10)O5)2(H2O)4]·10H2O}n,has been synthesized based on fluorescein(2-(6-hydroxy-3-oxo-3 H-xanthen-9-yl) benzoic acid) and systematically characterized by elemental analysis,infrared(IR) spectrum,thermo gravimetric analysis(TGA),powder X-ray diffraction(PXRD) and single-crystal X-ray diffraction.Compound 1 crystallizes in monoclinic,space group P2/n with a = 20.428(5),b = 8.084(2),c = 21.689(5)A,β = 96.360(5)°,Mr = 993.46,V = 3559.7(15)A^3,Z = 4,Dx = 1.845 g/cm^3,μ = 1.276 mm^-1,F(000) = 1974,GOOF = 1.044,λ(Mo Kα) = 0.71073 ?,the final R = 0.0553 and wR = 0.1720 for 7245 observed reflections with I 〉 2σ(I). 展开更多
关键词 crystal structure coordination complex fluorescein
下载PDF
Syntheses, Characterization and Biological Activity of Coordination Compounds of 3-Hydroxy-2-methyl-4<i>H</i>-pyran-4-one and Its Mixed Ligand Complexes with 1,2-Diaminocyclohexane
15
作者 Temitayo O. Aiyelabola 《Advances in Biological Chemistry》 2021年第3期106-125,共20页
<span style="font-family:Verdana;">Coordination compounds of 3-hydroxy-2-methyl-4</span><i><span style="font-family:Verdana;">H</span></i><span style="fo... <span style="font-family:Verdana;">Coordination compounds of 3-hydroxy-2-methyl-4</span><i><span style="font-family:Verdana;">H</span></i><span style="font-family:Verdana;">-pyran-4-one with </span><span style="font-family:Verdana;">iron(III), cobat(III) and chromium(III) were synthesized with M:L (1:2)</span><span style="font-family:Verdana;">. Mixed ligand coordination compounds of 3-hydroxy-2-methyl-4</span><i><span style="font-family:Verdana;">H</span></i><span style="font-family:Verdana;">-pyran-4-one and 1,2-diaminocyclohexane using the same metal ions were also synthesized </span><b><span style="font-family:Verdana;">M:L1</span></b><span style="font-family:Verdana;">:</span><b><span style="font-family:Verdana;">L2</span></b><span style="font-family:Verdana;"> (1:1:1) where </span><b><span style="font-family:Verdana;">L1</span></b><span style="font-family:Verdana;"> is 3-hydroxy-2-methyl-4</span><i><span style="font-family:Verdana;">H</span></i><span style="font-family:Verdana;">-pyran-4-one and </span><b><span style="font-family:Verdana;">L2</span></b><span style="font-family:Verdana;"> is 1,2-diaminocyclohexane. The coordination compounds obtained were characterized using electronic and infrared spectral analyses, magnetic susceptibility and percentage metal analysis. They were also evaluated for their cytotoxic and antioxidant activities. The result obtained suggested that octahedral geometry was obtained for all the compounds, as a result of additional two molecules of the solvent coordinated to the metal ions. Both the primary and secondary ligands coordinated in a bidentate fashion. The synthesized compounds exhibited moderate cytotoxicity, although none was as active as the standard. The cobalt(III) mixed ligand complex elicited the highest activity. The synthesized compounds all exhibited good to moderate antioxidant activity.</span> 展开更多
关键词 coordination Compounds Cytotoxicity Antioxidant Mixed Ligand complexes 3-Hydroxy-2-methyl-4H-pyran-4-one 1 2-Diaminocyclohexane
下载PDF
STUDIES ON SOLID STATE REACTIONS OF COORDINATION COMPOUNDS(LXⅡ)Solid state synthesis and crystal structure of the complex ICu_(0.84)Au_(0.16)(PPh_3)_2(SC(Ph)NHPh)CIJ·0.5CS_2
16
作者 Shi An BAO Jian Ping LANG Xin Quan XIN Coordination Chemistry Institute,Nanjing University,Nanjing 210008Kai Bei YU Chengdu Center of Analysis and Measurement,Academica Sinica,Chengdu 610015 《Chinese Chemical Letters》 SCIE CAS CSCD 1992年第12期1027-1028,共2页
[Cu_(0.84)Au_(0.16)(PPh_3)_2(SC(Ph)NHPh)Cl]·0.5CS_2=,Mr=895.79,monoclinic,space group P2_1/a,a=17.231(3),b=14.611(2),c=18.000(3) ,β=105.56(2)°,V=4365(1) ~3, Z=4,D_c=1.37g/cm^3.,λ(MoK_α)=0.71073 ,μ=12.15c... [Cu_(0.84)Au_(0.16)(PPh_3)_2(SC(Ph)NHPh)Cl]·0.5CS_2=,Mr=895.79,monoclinic,space group P2_1/a,a=17.231(3),b=14.611(2),c=18.000(3) ,β=105.56(2)°,V=4365(1) ~3, Z=4,D_c=1.37g/cm^3.,λ(MoK_α)=0.71073 ,μ=12.15cm^(-1),F(000)=1855,R=0.052, R_W=0.045 for 3930 observed reflections with Ⅰ>1.5σ(Ⅰ).The central metal atom has a dis. torted tetrahedral geometry with bond lengths Cu-S=2.384(2) (Au-S=2.389(4)), Cu-Cl=2.481(3)(Au-Cl=2.474(1))and Cu-P=2.269(2)-2.289(2)(Au-P=2.270(4)-2.279(4)) . 展开更多
关键词 STUDIES ON SOLID STATE REACTIONS OF coordination COMPOUNDS CS Ph)NHPh)CIJ AU LX PPh3 Solid state synthesis and crystal structure of the complex ICu SC
下载PDF
Synthesis and Crystal Structure of a New Two-dimensional Manganese Coordination Polymer:[Mn(L)(1,4-bdc)] 被引量:9
17
作者 孔治国 马晓媛 +1 位作者 徐占林 王秀艳 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2011年第7期927-930,共4页
A new coordination polymer, [Mn(L)(1,4-bdc)] (L = 11-fluoro-dipyrido[3,2- a:2",3 "- c]phenazine, 1,4-bdc - benzene-1,4-dicarboxylate), has been synthesized through the hydrothermal method and characterized by... A new coordination polymer, [Mn(L)(1,4-bdc)] (L = 11-fluoro-dipyrido[3,2- a:2",3 "- c]phenazine, 1,4-bdc - benzene-1,4-dicarboxylate), has been synthesized through the hydrothermal method and characterized by elemental analysis, IR and single-crystal X-ray diffraction. It crystallizes in triclinic, space group P1 with a = 9.7544(9), b = 10.8254(10), c = 11.5288(10) A, a = 114.1300(10), β = 96.6110(10), y = 105.0390(10)°, V= 1038.62(16)/k3, Z= 2, C26H13FMnN404, Mr = 519.34, Dc = 1.661 g/cm3, F(000) = 526, ,u(MoKa) = 0.691 mm^-, R = 0.0405 and wR = 0.0977. The 1,4-bdc dianions link the neighboring Mn(II) atoms to yield a two-dimensional layer structure. The L ligands are attached on both sides of the layer. The π-π interactions between the L ligands of neighboring layers result in a three-dimensional supramolecular architecture. 展开更多
关键词 manganese complex crystal structure coordination polymer
下载PDF
Synthesis and Crystal Structure of a New Lead Coordination Polymer: [Pb(L)(1,4-ndc)] 被引量:5
18
作者 孔治国 马晓媛 +1 位作者 徐占林 王秀艳 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2010年第11期1749-1752,共4页
The title coordination polymer, [Pb(L)(1,4-ndc)] 1 (L = 2-(4-fluorophenyl)-1Himidazo[4,5f1,10]phenanthroline, 1,4-ndc = naphthalene-1,4-dicarboxylic acid), has been obtained by using hydrothermal synthesis and... The title coordination polymer, [Pb(L)(1,4-ndc)] 1 (L = 2-(4-fluorophenyl)-1Himidazo[4,5f1,10]phenanthroline, 1,4-ndc = naphthalene-1,4-dicarboxylic acid), has been obtained by using hydrothermal synthesis and characterized by elemental analysis, IR and singlecrystal X-ray diffraction. It crystallizes in monoclinic, space group P21/c with a = 10.1043(11), b = 14.3162(15), c = 17.6061(18), β = 95.3990(10)°, V = 2535.5(5)3, Z = 4, C31H17FN4O4Pb, Mr = 735.68, Dc = 1.927 g/cm3, F(000) = 1416, μ(MoKa) = 6.709 mm-1, R = 0.0201 and wR = 0.0489. The 1,4-ndc dianions link neighboring Pb(II) atoms in a bis-chelating mode, yielding a one-dimensional chain structure along the c axis. The C-H···π interactions between the carbon atom of L ligand and the benzene ring of 1,4-ndc lead the one-dimensional chains to form a two-dimensional supramolecular layer. The π-π interactions between L ligand and 1,4-ndc ligand make the two-dimensional layers generate a three-dimensional supramolecular architecture. Additionally, the N-H···O hydrogen bonds further stabilize the structure of 1. 展开更多
关键词 lead complex crystal structure coordination polymer 2-(4-fluorophenyl)-lH-imidazo [4 5-f] [1 10]phenanthroline
下载PDF
Synthesis,Crystal Structure and Luminescent Property of a New Indium(Ⅲ)Coordination Polymer 被引量:2
19
作者 杨贺 姜阳 +1 位作者 徐波 李村成 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2016年第11期1723-1727,共5页
A new coordination complex [In(pda)1.5(bpy)]n (1, H2pda = 1,4-phenylenediacetic acid, bpy = 2,2'-bipyridine) has been synthesized under hydrothermal conditions and characterized by IR spectrum, elemental analys... A new coordination complex [In(pda)1.5(bpy)]n (1, H2pda = 1,4-phenylenediacetic acid, bpy = 2,2'-bipyridine) has been synthesized under hydrothermal conditions and characterized by IR spectrum, elemental analysis, PXRD and single-crystal X-ray diffraction analysis. Crystal data for the title complex are as follows: monoclinic system, space group P21/n with a = 11.8015(7), b = 15.9551(10), c = 11.8858(8)A^°, β = 94.844(6)°, V = 2230.0(2) A^°3, Mr = 559.25, Z = 4, F(000) = 1124, Dc = 1.666 g/cm^3, μ(MoKα) = 1.106 mm^-1, R = 0.0269 and wR = 0.0569 for 4534 observed reflections with I 〉 2σ(I). Complex 1 displays a 3D supermolecular structure based on the 1D zizag chains. Fluorescence spectrum measurement indicates that complex 1 shows strong fluorescence emission with a maximum peak at 447 nm in the solid state at room temperature. 展开更多
关键词 coordination complex crystal structure LUMINESCENCE INDIUM
下载PDF
A Novel Two-dimensional Lead(Ⅱ) Coordination Polymer Based on Dinuclear Lead(Ⅱ) Unit Containing(5-Chloro-quinolin-8-yloxy) Acetate 被引量:3
20
作者 李静 王玉红 宋瑞峰 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2014年第10期1488-1494,共7页
A novel two-dimensional lead(II) coordination polymer 1, [C11H7Cl2NO3Pb]n, has been prepared by solvothermal reaction of new bridging ligand(5-chloro-quinolin-8-yloxy)acetic acid(HL) with PbCl2, and its structur... A novel two-dimensional lead(II) coordination polymer 1, [C11H7Cl2NO3Pb]n, has been prepared by solvothermal reaction of new bridging ligand(5-chloro-quinolin-8-yloxy)acetic acid(HL) with PbCl2, and its structure was characterized by IR, elemental analysis, TG-DTA and single-crystal X-ray diffraction analysis. The crystal is of monoclinic system, space group P21/c with a = 16.7603(7), b = 8.6907(4), c = 8.4745(3)A, β = 101.1110(11)°, C11H7Cl2NO3 Pb, Mr = 479.27, V = 1211.25(9)A3, Z = 4, Dc = 2.628 g/cm^3, F(000) = 880, μ = 14.367 mm^-1, R = 0.0173 and wR = 0.0508. The asymmetric unit contains one lead(II) cation, one(5-chloro-quinolin-8-yloxy)acetate(L) ligand and a chloride ion. The PbII center is hepta-coordinated in a distorted pentagonal bipyramidal geometry. The coordination sphere of the Pb atom is completed by two oxygen atoms and one nitrogen atom of the same L ligand, two bridging chloride ions and two bridging oxygen atoms of two adjacent L ligands. Two PbII centers are linked by the two L ligands to form a C2-symmetric dimer unit with a planar [Pb2O2] ring. Each dimer unit acts as a secondary building unit(SBU) and links adjacent four dimer units by the chloride atoms and oxygen atoms of carboxylate groups of L, forming a two-dimensional array. Such two-dimensional layers are packed through intermolecular C–H…Cl hydrogen bonds into a three-dimensional supramolecular structure. When the dimer unit is viewed as a 4-connected node, 1 is simplified as a 4-nodal 2-D network with square lattices of the diagonal lengths to be 6.079(1)A. The fluorescence emission peak of complex 1 appears near 407 nm. 展开更多
关键词 lead(II) complex crystal structure (5-chloro-quinolin-8-yloxy) acetic acid coordination polymer
下载PDF
上一页 1 2 57 下一页 到第
使用帮助 返回顶部