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含氮杂环卡宾配体的半三明治铱(Ⅲ)配合物的合成及抗肿瘤转移作用
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作者 刘金锋 张钧铭 《曲阜师范大学学报(自然科学版)》 CAS 2024年第4期111-116,共6页
铱(Ⅲ)抗肿瘤配合物[(η^(5)-C_(5)MeC_(6)H_(4)C_(6)H_(5))Ir(C∧C)Cl]PF_(6)能够选择性杀伤、抑制肿瘤细胞,但其内在的作用机制尚不完全明确.采用细胞划痕法、迁移及侵袭等实验考察了金属铱(Ⅲ)配合物对A549细胞的抗转移能力,采用免... 铱(Ⅲ)抗肿瘤配合物[(η^(5)-C_(5)MeC_(6)H_(4)C_(6)H_(5))Ir(C∧C)Cl]PF_(6)能够选择性杀伤、抑制肿瘤细胞,但其内在的作用机制尚不完全明确.采用细胞划痕法、迁移及侵袭等实验考察了金属铱(Ⅲ)配合物对A549细胞的抗转移能力,采用免疫组织化学法和蛋白印迹法分析NEDD9、β-catenin表达水平.研究结果显示:金属铱(Ⅲ)配合物对A549细胞有明显的抗转移作用,可能通过作用于NEDD9降低肺癌细胞的增殖和转移.同时该金属配合物也可通过诱发β-catenin蛋白的表达,增加细胞膜表面粘性,降低A549细胞的转移能力. 展开更多
关键词 金属铱()配合物 抗肿瘤 细胞凋亡 抗转移
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Fe(Ⅲ)-XG配合物选择性絮凝微细粒赤铁矿与石英及其机理研究 被引量:1
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作者 韩英棋 杨志超 +4 位作者 滕青 张郭阳 方淑华 张素红 刘生玉 《有色金属(选矿部分)》 CAS 2024年第1期116-125,共10页
基于金属离子配位理论,将FeCl_(3)·6H_(2)O与黄原胶(XG)按一定比例混合制备Fe(Ⅲ)-XG配合物,用于改善微细粒赤铁矿难沉降、回收效果差的问题。采用沉降实验研究了不同条件下Fe(Ⅲ)-XG对微细粒赤铁矿和石英的选择性絮凝行为,结合动... 基于金属离子配位理论,将FeCl_(3)·6H_(2)O与黄原胶(XG)按一定比例混合制备Fe(Ⅲ)-XG配合物,用于改善微细粒赤铁矿难沉降、回收效果差的问题。采用沉降实验研究了不同条件下Fe(Ⅲ)-XG对微细粒赤铁矿和石英的选择性絮凝行为,结合动电位、红外光谱和显微镜分析,揭示Fe(Ⅲ)-XG对赤铁矿的絮凝作用机理。矿物絮凝沉降试验结果表明:以黄原胶和Fe(Ⅲ)为絮凝剂,无法实现赤铁矿与石英的选择性絮凝,而黄原胶与FeCl_(3)·6H_(2)O质量比为1︰9时生成的Fe(Ⅲ)-XG配位絮凝剂,对赤铁矿和石英表现出较强的选择性絮凝作用,pH值为6时两者沉降率差异最大,分别为91.50%和39.96%。显微镜观察结果证实,Fe(Ⅲ)-XG作用下,赤铁矿颗粒形成块状絮体,且絮体密实程度更大,而石英颗粒间未发生团聚作用,处于相对分散的状态。Zeta电位、溶液化学计算、吸附量实验与红外光谱分析结果表明:黄原胶主要通过羧酸基团的羰基C=O与Fe^(3+)发生配位作用形成Fe(Ⅲ)-XG配合物,Fe(Ⅲ)-XG在石英和赤铁矿表面吸附方式不同,因而在两种矿物表面吸附量不同。Fe(Ⅲ)-XG中的羟基氧和赤铁矿表面的铁元素发生化学键合特异性吸附在赤铁矿表面,而在石英表面只有微弱的氢键吸附。通过FeCl_(3)·6H_(2)O与黄原胶配位组装可显著提升微细粒赤铁矿选择性絮凝分离效果,为赤铁矿选择性絮凝分选提供新的策略和理论指导。 展开更多
关键词 Fe()-XG配合物 赤铁矿 石英 絮凝剂 选择性絮凝 微细粒
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Synthesis of Eu(Ⅲ) and Tb(Ⅲ) Complexes with New Aryl Amide Type Tetrapodal Ligand and Their Luminescence Properties 被引量:3
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作者 蔡正洪 谭民裕 《Journal of Rare Earths》 SCIE EI CAS CSCD 2002年第5期382-384,共3页
A new aryl amide type tetrapodal ligand L (1, 1, 1, 1 tetrakis-{[(2 benzylaminoformyl) phenoxyl]methyl}methane) and its europium and terbium nitrate complexes were synthesized. The luminescence properties of these c... A new aryl amide type tetrapodal ligand L (1, 1, 1, 1 tetrakis-{[(2 benzylaminoformyl) phenoxyl]methyl}methane) and its europium and terbium nitrate complexes were synthesized. The luminescence properties of these complexes were also studied. 展开更多
关键词 rare earths aryl amide tetrapodal ligand Eu() and Tb() complexes luminescence property
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Investigation on Molecular and Crystal Structures of Metal Complexes with Aminopolycarboxylic Acids——Synthesis and Structure of K[In~Ⅲ(EDTA)(H_2O)]·2H_2O 被引量:2
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作者 王君 陈冬松 +1 位作者 宋玉林 高敬群 《Rare Metals》 SCIE EI CAS CSCD 1998年第3期54-59,共6页
The title complex was synthesised and its molecular and crystal structures were determined by single crystal X ray reflection structure analysis. The crystal data are as follows: K[In Ⅲ(EDTA)(H 2O)]·2H 2O (... The title complex was synthesised and its molecular and crystal structures were determined by single crystal X ray reflection structure analysis. The crystal data are as follows: K[In Ⅲ(EDTA)(H 2O)]·2H 2O (EDTA=ethylene diamine N, N, N′, N′ tetraacetate), Monoclinic, C c space group, a=0.9096(2) nm,b=1.1996(2) nm, c =1.5144(3) nm, β =99.40(3)°, V =1.6302(6) 3, Z =3, D c=1.498 g·cm -3 , μ =1.325 mm -1 , F (000)=726, R =0.0320 and R W=0.0903 for 2315 observed independent reflections. The complex anion [In Ⅲ(EDTA)(H 2O)] - has a seven coordinate pseudo pentagonal bipyramidal (PB D 5h ) structure, in which the EDTA serves as a hexadentate ligand with two N atoms and four O atoms and one water molecule (H 2O) directly coordinated to the central metal ion In Ⅲ as a seventh ligand. 〓〓 展开更多
关键词 In Ethylenediaminetetraacetate (EDTA) complex Seven coordinate structures
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Synthesis and Characterization of Some Lanthanide(Ⅲ) Complexes with 4-[N-(2-methoxybenzylimine)formyl]-2, 3-dimethyl-1-phenyl-3-pyazolin-5-one 被引量:2
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作者 G. Rijulal P. Indrasenan 《Journal of Rare Earths》 SCIE EI CAS CSCD 2007年第6期670-673,共4页
A series of seven novel lanthanide(Ⅲ ) nitrato complexes with 4-[ N-(2-methoxybenzylimine)formyl] 1-2, 3- dimethyl-1-phenyl-3-pyazolin-5-one (2mbfa), were synthesized. These complexes were characterized by elem... A series of seven novel lanthanide(Ⅲ ) nitrato complexes with 4-[ N-(2-methoxybenzylimine)formyl] 1-2, 3- dimethyl-1-phenyl-3-pyazolin-5-one (2mbfa), were synthesized. These complexes were characterized by elemental analysis, molecular mass determination, conductance and magnetic moment measurements, IR, UV-visible, and ^13CNMR spectral studies, In these complexes, the Schiff base, 2mbfa, acts as neutral bidentate ligand by utilizing the carbonyl oxygen and azomethine nitrogen as donor sites. All the three nitrate ions are also coordinated unidentately with 7 coordination for the lanthanide(Ⅲ) ions with a tentative monocapped octahedral geometry for the complexes. All the seven lanthanide(Ⅲ) complexes have a general formula, [ Ln(2mbfa):(NO3)3 ]. 展开更多
关键词 synthesis characterization lanthanide( complexes Schiff bases rare earths
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Syntheses and Magnetic Properties of Cu(Ⅱ)-RE(Ⅲ) Heterobinuclear Complexes with N,N′-Bis(3-carboxyisalicylidene)-trimethylenediamine 被引量:4
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作者 TAO Ruo-jie, YU Zliao-wen and ZHOU Xu-ya(Departmeut of Chemistry, Henan University , Kaifeng, 475001 )JIN Dou-man(Hauau Institute of Chemistry . Zhengzhou, 450003 )LIAO Dai-zheng(Department of Chemistry , Nankai University , Tianjin, 300071) 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1994年第3期179-184,共6页
ine heterobinuclear complexes of Cu (Ⅱ)-RE (Ⅲ) with N, N′-bis-(3-car-boxylsalicylidene ) trimetliylenediamine (TS) were syntliesized and characterized bymeans of elemental analyses, molar conductivity, thermogravim... ine heterobinuclear complexes of Cu (Ⅱ)-RE (Ⅲ) with N, N′-bis-(3-car-boxylsalicylidene ) trimetliylenediamine (TS) were syntliesized and characterized bymeans of elemental analyses, molar conductivity, thermogravimetry,IR and elec-tronic spectra. The measurements of variable-temperature magnetic susceptibilitysliow that there exists only a very weak antiferromagnetic spin exchange interactionbetween the ions of Cut(Ⅱ) and RE(Ⅲ) in CuRETSCI . 3H_2O. 展开更多
关键词 Schiff base Cu(Ⅱ)-RE() Heterobinuclear complex Variable-tem-perature magnetic susceptibility
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Hydrothermal Syntheses and Crystal Structures of Three Lanthanide(Ⅲ)Complexes Based on Carboxyl Derivatives of 1,10-Phenanthroline 被引量:5
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作者 乔宇 尉兵 +5 位作者 李秀颖 车广波 刘春波 张兴晶 朱恩伟 刘凤 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2017年第1期73-81,共9页
Three lanthanide(III) complexes [Ln(4-NCP)(1,4-BDC)]n·xn H2O(Ln = Pr(1), Sm(2), Nd(3). 4-HNCP = 2-(4-carboxyphenyl)imidazo(4,5-f)(1,10)phenanthroline, 1,4-H2 BDC = benzene-1,4-dicarboxylic acid... Three lanthanide(III) complexes [Ln(4-NCP)(1,4-BDC)]n·xn H2O(Ln = Pr(1), Sm(2), Nd(3). 4-HNCP = 2-(4-carboxyphenyl)imidazo(4,5-f)(1,10)phenanthroline, 1,4-H2 BDC = benzene-1,4-dicarboxylic acid) have been hydrothermally synthesized and characterized via elemental analysis, infrared spectrometry and single-crystal X-ray diffraction. Structural analyses revealed that complexes 1~3 possess similar porous three-dimensional frameworks with the point symbol {4^(12)·6~3}. Meanwhile, complexes 1~3 exhibit excellent thermal stabilities and complex 2 exhibits characteristic luminescent property. 展开更多
关键词 lanthanide( complex 2-(4-carboxyphenyl)imidazo(4 5-f)(1 10)phenanthroline benzene-1 4-dicarboxylic acid crystal structure luminescence
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Stability Constants and Fluorescence of Terbium(Ⅲ) Complexes with Polyaminopolycarboxylates in Aqueous Solution 被引量:1
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作者 GONG Meng lian WU Wei ning +3 位作者 SHI Hua hong LEI Heng yi MENG Jian xin YANG Yan sheng 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1998年第4期11-16,共6页
IntroductionAvarietyofnewpolyaminopolycarboxylateligandsandtheirlanthanidecomplexeshavebeensynthesizedinrece... IntroductionAvarietyofnewpolyaminopolycarboxylateligandsandtheirlanthanidecomplexeshavebeensynthesizedinrecentyearsbecauseoft... 展开更多
关键词 Terbium() Polyaminopolycarboxylate complex Stability constant FLUORESCENCE
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羟胺强化Fe(Ⅲ)-NTA络合物活化过二硫酸盐降解磺胺甲恶唑 被引量:3
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作者 王真然 彭藴斓 +1 位作者 刘义青 付永胜 《安全与环境学报》 CAS CSCD 北大核心 2024年第3期1163-1172,共10页
针对Fe(Ⅱ)/过二硫酸盐(Peroxydisulfate,PDS)高级氧化技术存在的pH值应用范围窄、铁泥产量大等缺陷,研究构建Fe(Ⅲ)-氨三乙酸(Nitrilotriacetic Acid,NTA)/羟胺(Hydroxylamine,HAm)/PDS体系,以在中性条件下高效降解水中新污染物磺胺甲... 针对Fe(Ⅱ)/过二硫酸盐(Peroxydisulfate,PDS)高级氧化技术存在的pH值应用范围窄、铁泥产量大等缺陷,研究构建Fe(Ⅲ)-氨三乙酸(Nitrilotriacetic Acid,NTA)/羟胺(Hydroxylamine,HAm)/PDS体系,以在中性条件下高效降解水中新污染物磺胺甲恶唑(Sulfamethoxazole,SMX)。研究结果显示,Fe(Ⅲ)-NTA/HAm/PDS体系在pH=7条件下对SMX的降解率可达91%,该体系降解SMX的主要活性物种为·SO_(4)^(-)和·OH。SMX在Fe(Ⅲ)-NTA/HAm/PDS体系中的降解效率随溶液pH值的升高而降低,且增加Fe(Ⅲ)、PDS的用量会加速SMX降解。NTA的引入可将Fe(Ⅱ)/PDS体系的pH值应用范围由酸性拓展至弱碱性,与此同时,向体系内加入HAm可有效减少铁泥的产量。根据检测到的降解产物,提出SMX在Fe(Ⅲ)-NTA/HAm/PDS体系中可能的降解途径包括断键反应、羟基化反应、氨基氧化反应。双酚AF、双氯芬酸、土霉素等其他新污染物也能在Fe(Ⅲ)-NTA/HAm/PDS体系中被高效去除,表明该体系在新污染物的降解领域有较大的应用潜力。 展开更多
关键词 环境工程学 磺胺甲恶唑 羟胺 Fe()-NTA络合物 过二硫酸盐
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Eu(Ⅲ) complexes involving 1,3,5-triazine diphosphine oxides 被引量:1
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作者 O.Pietraszkiewicz M.Pietraszkiewicz +1 位作者 J.Karpiuk M.Jesień 《Journal of Rare Earths》 SCIE EI CAS CSCD 2009年第4期584-587,共4页
The 1,3,5-triazine diphosphine oxide ligands with donor-acceptor properties formed strong complexes with europium(Ⅲ) ion in acetonitrile. Spectrophotometric titrations and mass spectra indicated that two ligands co... The 1,3,5-triazine diphosphine oxide ligands with donor-acceptor properties formed strong complexes with europium(Ⅲ) ion in acetonitrile. Spectrophotometric titrations and mass spectra indicated that two ligands coordinated to one europium ion. The stability constants varied from 11.64 to 14.60 (log 13). Binary complexes exhibited rather weak luminescence in solution. 1,3,5-triazine diphosphine oxides engaged as co-ligands in Eu(Ⅲ) (2-thenoyltrifluoroacetonate)3 complex contributed to the overall photoluminescence and allowed for excitation with longer wavelengths than the parent complex. 展开更多
关键词 Eu( complexes 1 3 5-TRIAZINE diphosphine oxide SPECTROSCOPY rare earths
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Microwave assisted synthesis, spectroscopic, thermal, and antifungal studies of some lanthanide(Ⅲ) complexes with a heterocyclic bishydrazone 被引量:1
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作者 K. Mohanan B. Sindhu Kumari G. Rijulal 《Journal of Rare Earths》 SCIE EI CAS CSCD 2008年第1期16-21,共6页
A bishydrazone formed by the condensation of isatinmonohydrazone and salicylaldehyde reacted with lanthanide(Ⅲ) chloride to form complexes of the type [Ln(HISA)2Cl3], where, Ln=La(Ⅲ), Ce(Ⅲ), Pr(Ⅲ), Nd(... A bishydrazone formed by the condensation of isatinmonohydrazone and salicylaldehyde reacted with lanthanide(Ⅲ) chloride to form complexes of the type [Ln(HISA)2Cl3], where, Ln=La(Ⅲ), Ce(Ⅲ), Pr(Ⅲ), Nd(Ⅲ), Sm(Ⅲ), Eu(Ⅲ), or Gd(Ⅲ) and HISA= [(2-hydroxybenzaldehyde)-3-isatin]bishydrazone. Both reactions were carried out under microwave conditions. The ligand and the metal complexes were characterized on the basis of elemental analysis, molar conductance, magnetic susceptibility measurements, UV visible, infrared, far infrared, and proton NMR spectral data. The ligand acted as neutral tridentate, coordinating through the carbonyl oxygen, azomethine nitrogen, and phenolic oxygen without deprotonation. The ligand and lanthanum(Ⅲ) complex were subjected to X-ray diffraction studies. The X-ray diffraction pattern of ligand exhibited its crystalline nature and that of the lanthanum(Ⅲ) complex indicated its amorphous character. The thermal decomposition behaviour of the complex, [La(HISA)2Cl3], was examined in the temperature range of 40-800 ℃ using TG, DTG, and DTA. The ligand and the metal complexes were screened for their antifungal activities. 展开更多
关键词 microwave synthesis bishydrazones lanthanum( complex thermal decomposition antifungal activity rare earths
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Synthesis,Structure and Magnetic Properties of Novel Carboxylato-bridged Pentanuclear Copper(Ⅱ)-Lanthanoid(Ⅲ)Complexes 被引量:1
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作者 TONG Ming-liang WU Yu-luan +2 位作者 CHEN Xiao-ming SUN Zi-ming David N.Hendrickson 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1998年第3期8-13,共6页
Six novel pentanuclear complexes [Cu 3Ln 2(ClCH 2CO 2) 12 (H 2O) 8]·2H 2O (Ln=La, Pr, Sm, Gd, Dy, or Er) were synthesized by the reaction of chloroacetic acid with Cu and Ln ions in aqueous solutions. ... Six novel pentanuclear complexes [Cu 3Ln 2(ClCH 2CO 2) 12 (H 2O) 8]·2H 2O (Ln=La, Pr, Sm, Gd, Dy, or Er) were synthesized by the reaction of chloroacetic acid with Cu and Ln ions in aqueous solutions. The X ray crystallography established the structure of the Gd complex, which contains a pair of quadruply acetato bridged CuGd dinuclear subunits, and each of them is linked to the central Cu atom by a single acetato bridge. The coordination sphere of each Gd atom is completed by three aqua ligands [Gd-O=0.242 8(5)-0.244 4(4) nm] to form an 8 coordinated distorted square antiprism. The central Cu atom is coordinated by two oxygen atoms from the two bridging acetato groups and two oxygen atoms from the two monodentate acetato groups in a slightly distorted square planar fashion, while each terminal Cu atom is coordinated by the four acetato oxygen atoms at the basal plane and an aqua ligand at the apical position to form a square pyramid. The variable temperature (4 320 K) magnetic susceptibility data of the Gd complex were measured, and fitted to the Curie Weiss law with C =16.38 K cm 3·mol -1 and θ =-1.55 K, indicating very weak antiferromagnetic interaction. 展开更多
关键词 Heterometallic complex Copper(Ⅱ) Lanthanoid() Antiferromagnetic interaction
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Preparation,Characterization and Properties of Two New Lanthanide(Ⅲ)-5-(2-pyridyl)tetrazolate Complexes 被引量:1
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作者 ZHOU Yun-shan XU Dong-hua ZHANG Li-juan 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2010年第6期866-870,共5页
Two new mononuclear lanthanide(Ⅲ) complexes Ln(pytz)3(H2O)3·(H2O)3.5[Ln=Tb(1);Eu(2);Hpytz=5-(2-pyridyl)tetrazole] were synthesized by reacting Hpytz with the corresponding lanthanide(Ⅲ) ions and... Two new mononuclear lanthanide(Ⅲ) complexes Ln(pytz)3(H2O)3·(H2O)3.5[Ln=Tb(1);Eu(2);Hpytz=5-(2-pyridyl)tetrazole] were synthesized by reacting Hpytz with the corresponding lanthanide(Ⅲ) ions and characterized.The single crystal X-ray diffraction analysis reveals that complexes 1 and 2 are isostructural and the lanthanide(Ⅲ) ions in both complexes 1 and 2 are nine-coordinated,with three oxygen atoms of three coordination water molecules and six nitrogen atoms of three pytz ligands,forming a monocapped square antiprism.Extensive hydrogen bonds exist,resulting in a three-dimensional supramolecular network structure by hydrogen-bonds in both complexes 1 and 2,respectively.Complex 1 exhibits typical green fluorescence of Tb(Ⅲ) ion and complex 2 red fluorescence of Eu(Ⅲ) ion,in solid state at room temperature. 展开更多
关键词 Crystal structure FLUORESCENCE Lanthanide( complex
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Degradation of Azo Dyes by Photocatalysis of Fe(Ⅲ)-oxalate Complexes/H_2O_2 in Aqueous Non-ionic Surfactant Triton X-100 Solution 被引量:1
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作者 董永春 王秋芳 +2 位作者 刘春燕 潘巧斌 徐天标 《Journal of Donghua University(English Edition)》 EI CAS 2010年第4期535-543,共9页
Two azo dyes,C.I.Reactive Red 195(RR195)and C.I.Acid Black 234(AB234)were degraded by photocatalysis of Fe(Ⅲ)-oxalate complexes/H2O2 in aqueous non-ionic surfactant,Triton X-100(TX-100)solution.Some factors affecting... Two azo dyes,C.I.Reactive Red 195(RR195)and C.I.Acid Black 234(AB234)were degraded by photocatalysis of Fe(Ⅲ)-oxalate complexes/H2O2 in aqueous non-ionic surfactant,Triton X-100(TX-100)solution.Some factors affecting the dye degradation such as TX-100 concentration,irradiation intensity,and sodium chloride were investigated.The interaction and competition between dye and TX-100 during the degradation were also examined using spectrophotometry and maximum bubble pressure method,respectively.The results indicated that TX-100 showed a significant reduction effect on degradation of two azo dyes,but which was largely confined to TX-100 concentration below the Critical Micellar Concentration(CMC).And the reduction was considerably decreased above the CMC,especially in the case of AB234.Moreover,the reducing effect of TX-100 on dye degradation almost did not vary with irradiation intensity.And the impact of sodium chloride on dye degradation was limited by the addition of TX-100. 展开更多
关键词 azo dyes Triton X-100 DEGRADATION Fe()-oxalate complexes H2O2
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Electric Conductivity Study of o-Substituted Phenoxo Iron (Ⅲ) Complexes 被引量:2
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作者 Ramadan Ali Bawa 《Journal of Chemistry and Chemical Engineering》 2010年第5期54-58,共5页
The coordination nature of a number of substituted sodiumphenoxides to iron (Ⅲ) ion has been studied. The o-nitrosodiumphenoxide was found to have different coordination behaviour from that the sodium salts of sali... The coordination nature of a number of substituted sodiumphenoxides to iron (Ⅲ) ion has been studied. The o-nitrosodiumphenoxide was found to have different coordination behaviour from that the sodium salts of salicylic acid and methylsalicylate showed. The structure of the complexes, the number of the ligands being coordinated to the metal ion, has also been determined by titration, uv-vis spectroscopy, atomic absorption and the flame test. In addition, other sodium phenoxides were also involved in this study for comparison. An electric conductivity study on the resulting complexes was carried out and all complexes were found to be semiconductors. 展开更多
关键词 Iron ion complexes COORDINATION electric conductivity SEMICONDUCTORS
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Synthesis, Characterization and Antibacterial Activity of New Ln(Ⅲ) Complexes with an Unsymmetrical Schiff Base Ligand 被引量:1
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作者 BI Caifeng YAN Liangliang FAN Yuhua ZHANG Xia WANG Aidong 《Journal of Ocean University of China》 SCIE CAS 2006年第3期235-238,共4页
A new unsymmetrical Schiff base ligand (H2LLi) was synthesized using L-lysine, salicylaldehyde and 2-hydroxy-1-naphthaldehyde. Three solid metal complexes of this ligand \[Ln(H2L)(NO3)\] NO3·2H2O (Ln=La, Sm, Ho) ... A new unsymmetrical Schiff base ligand (H2LLi) was synthesized using L-lysine, salicylaldehyde and 2-hydroxy-1-naphthaldehyde. Three solid metal complexes of this ligand \[Ln(H2L)(NO3)\] NO3·2H2O (Ln=La, Sm, Ho) have been prepared and characterized by elemental analyses, IR spectra, UV spectra, TG-DTG and molar conductance. The antibacterial activities of the ligand and its complexes are also studied. The antibacterial experiments indicate that the ligand and its complexes possess antibacterial activity against Escherichia coli, Staphylococcus aureus and Bacillus subtilis and that the complexes have higher activity than those of the ligand. 展开更多
关键词 unsymmetrical Schiff base Ln( complex SYNTHESIS CHARACTERIZATION antibacterial action
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Synthesis and fluorescence properties of Tb(Ⅲ) complexes with pyridine-2,6-dicarboxylic acid derivatives 被引量:2
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作者 唐瑞仁 郑由浒 顾国梁 《Journal of Central South University of Technology》 2008年第5期599-605,共7页
Two novel ligands named 4-styrylpyridine-2,6-dicarboxylic acid (4-SPDA) and 4-(4-(2-(2, 6-dicarboxypyridin-4-yl)- vinyl)styryl)pyridine-2,6-dicarboxylic acid(DSPDA) and their complexes with Tb(Ⅲ) were synthesized and... Two novel ligands named 4-styrylpyridine-2,6-dicarboxylic acid (4-SPDA) and 4-(4-(2-(2, 6-dicarboxypyridin-4-yl)- vinyl)styryl)pyridine-2,6-dicarboxylic acid(DSPDA) and their complexes with Tb(Ⅲ) were synthesized and characterized by infrared spectrometry, 1H nuclear magnetic resonance, elemental analysis and gas chromatograph-mass spectrometry. The ligand synthetic route was optimized. The fluorescence properties of the complex in solid state, in different kind of solvents and in solutions with different pH values were investigated in detail. The results show that the yields of DSPDA and 4-SPDA reach over 78% by Wittig-Horner reaction and other eight pyridine-2, 6-dicarboxylic acid derivatives with different substituents on pyridine ring, and their complexes with Tb(Ⅲ) are also obtained. The fluorescence intensities of the complexes with electron-donating groups are more intense than those of the complexes with electron-withdrawing groups on pyridine ring; fluorescence intensities of the complexes are the strongest in neutral solution (pH=7), and the less the dipole moment of solvent molecule is, the stronger the fluorescence intensity is. It is found that the two ligands (4-APDA and DSPDA) are the good sensitizers for Tb(Ⅲ) ion. 展开更多
关键词 Tb( complexes pyridine-2 6-dicarboxylic acid derivatives SYNTHESIS fluorescence property
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综合化学实验设计:氧桥三核铁(Ⅲ)配合物的便捷制备与表征
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作者 楚进锋 王艺澄 +5 位作者 齐继 刘余霖 李言 靳兰 何蕾 宋宇飞 《大学化学》 CAS 2024年第7期299-306,共8页
目前本科化学实验教学内容在配合物制备实验方面主要涵盖了单核配合物,而对配合物家族中占有重要地位的多核配合物却很少涉及。基于此,我们依据科研成果设计了一个关于三核铁(Ⅲ)配合物的综合化学实验,以期通过该实验加深学生对配合物... 目前本科化学实验教学内容在配合物制备实验方面主要涵盖了单核配合物,而对配合物家族中占有重要地位的多核配合物却很少涉及。基于此,我们依据科研成果设计了一个关于三核铁(Ⅲ)配合物的综合化学实验,以期通过该实验加深学生对配合物有关知识的理解和运用。本设计以廉价易得的九水合硝酸铁与三水合乙酸钠为原料,通过水浴加热反应、冷却结晶等步骤制备了一种氧桥三核铁(Ⅲ)配合物[Fe_(3)O(CH_(3)COO)_(6)(H_(2)O)_(3)]NO_(3)·4H_(2)O,通过配位滴定法测定了其铁元素含量,并对其进行了红外、热重、粉末X射线衍射和电子顺磁共振等表征测试。该实验制备方法简单快捷,易于操作,环保无污染。实验内容蕴含思政元素,目标配合物结构新颖,富有对称美,实验教学时亦可培养学生的审美意识,使其领略化学之美。本设计科教融合,有助于培养学生分析解决问题的能力,为本科生的综合化学实验教学提供了一个可行案例。 展开更多
关键词 综合化学实验 氧桥三核铁()配合物 对称结构 电子顺磁共振
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Photodegradation of bisphenol A in Fe(Ⅲ)-oxalate complexes solution
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作者 ZHAN Man-jun YANG Xi +1 位作者 XIAN Qi-ming KONG Ling-ren 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2006年第4期771-776,共6页
The aqueous photodegradation of bisphenol A (BPA) in the presence of Fe(Ⅲ)-oxalate complexes (Fe(Ⅲ)-Ox), which are common compositions of natural water, was investigated in this study. BPA underwent rapid in... The aqueous photodegradation of bisphenol A (BPA) in the presence of Fe(Ⅲ)-oxalate complexes (Fe(Ⅲ)-Ox), which are common compositions of natural water, was investigated in this study. BPA underwent rapid indirect photolysis in Fe(Ⅲ)-Ox solution under simulated solar irradiation, proceeding pseudo-first-order kinetics. The photolysis rate increased with decreasing pH or initial BPA level and increasing Fe(Ⅲ)/oxalate concentration ratio. Hydroxyl radicals (·OH), which were generated from the photochemical processes of Fe(Ⅲ)-Ox complexes and contributed to the photooxidation of BPA, were determined by molecular probe and electron spin resonance (ESR) methods with the steady-state concentration of 2.56 × 10^-14 mol/L. Superoxide anion radical (O2^·-) was considered as the precursor of. OH and qualitatively determined by adding nitro blue tetrazolium as well as ESR experiments. Based on the structural analysis of the intermediate photoproducts of BPA in Fe(Ⅲ)-Ox complexes solution, the possible degradation pathways of BPA were proposed, involving ·OH addition, alkyl scission and alky oxidation. The results indicate that the photochemical reactivity of Fe(Ⅲ) may affect the environmental fate of BPA in natural water significantly. 展开更多
关键词 bisphenol A Fe()-oxalate complexes PHOTOOXIDATION reactive oxygen species
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Syntheses and Magnetism of Binuclear Tb(Ⅲ)-Tb(Ⅲ)Complexes with Dianion of Chloranilic Acid as Bridging Ligand
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作者 JIANG Zong-hui, LIU Zong-ming, LIAO Dai-zheng and WANG Geng-lin (Department of Chemistry, Nankai University, Tianjin, 300071) 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1992年第2期143-146,共4页
The syntheses, spec(?) complexes are of significance for understanding mechanisms of magnetic interaction between metal ions and the exploitation of the synthesis of molecular magnetic materials. There were a few work... The syntheses, spec(?) complexes are of significance for understanding mechanisms of magnetic interaction between metal ions and the exploitation of the synthesis of molecular magnetic materials. There were a few works reported previously on the syntheses and magnetic in- 展开更多
关键词 Chloranilic acid Binuclear Tb( )-Tb( ) complexes MAGNETISM
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