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Microcalorimetric Character of Inhibition of Salicylaldehyde Glucosamine Schiff Base SG on Bacterial Metabolism 被引量:1
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作者 HUANG Zai-ying QU Song-sheng FENG Ying 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1999年第1期49-53,共5页
The power time curves of the reaction of E.coli with SG at different temperatures were determined by microcalorimetric method and the mutliplication rate constant k , generation time G , ratio I , and ther... The power time curves of the reaction of E.coli with SG at different temperatures were determined by microcalorimetric method and the mutliplication rate constant k , generation time G , ratio I , and thermogenetic quantity Q , Q 0 and 0 were calculated.The function formulas have been established. It was found that P max , t g, t and 0 can be used to characterize the bacterial growth metabolism of E.coli and the antibacterial activity of SG. 展开更多
关键词 salicylaldehyde glucosamine schiff base Microcalorimetrey E.COLI
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Microwave Preparation and Spectroscopic Investigation of Binuclear Schiff Base Metal Complexes Derived from 2,6-Diaminopyridine with Salicylaldehyde 被引量:2
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作者 Hasan A. Mohammed Nihad Ismeal Taha 《International Journal of Organic Chemistry》 2017年第4期412-419,共8页
The binuclear Schiff base complexes prepared by condensation 2,6-diamino-pyridine and salicylaldehyde (LH) by using microwave and adding metal salts to ligand by same ratio. The Schiff base ligand was checked by infra... The binuclear Schiff base complexes prepared by condensation 2,6-diamino-pyridine and salicylaldehyde (LH) by using microwave and adding metal salts to ligand by same ratio. The Schiff base ligand was checked by infrared, electronic spectra and 1HNMR spectroscopy and prepared complexes characterized by molar conductivity, infrared, electronic spectra and susceptibility measurements. The values of molar conductivities reveal that the complexes are non-electrolytes, from obtained data of electronic spectra and magnetic moment, an octahedral geometry was suggested, coordinated to the metal ions in a manner with N donor sites of imine groups, and oxygen of phenolic OH group. 展开更多
关键词 schiff base biNUCLEAR Metal Complexes 2 6-Diaminopyridine salicylaldehyde
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Synthesis, Characterization and Thermodecomposition Kinetics of Terbium(Ⅲ) Complex with Novel Schiff Base Salicylaldehyde-Taurine and 1,10-Phenanthroline 被引量:1
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作者 杨立荣 毕彩丰 +2 位作者 范玉华 何雪涛 肖艳 《Journal of Rare Earths》 SCIE EI CAS CSCD 2005年第S1期77-81,共5页
A complex of terbium(Ⅲ) with Schiff base salicylaldehyde-taurine and 1,10-phenanthroline was synthesized. The molecular formula was [Tb (sal-taurine) (1,10-phen) (NO_3)]·2H_2O (sal=salicylaldehyde, 1,10-phen=1,1... A complex of terbium(Ⅲ) with Schiff base salicylaldehyde-taurine and 1,10-phenanthroline was synthesized. The molecular formula was [Tb (sal-taurine) (1,10-phen) (NO_3)]·2H_2O (sal=salicylaldehyde, 1,10-phen=1,10-phenanthroline). The composition of the title complex was determined by elemental analysis and EDTA volumetic analysis. IR, Molar conductivity and X-ray powder diffraction were performed for its characterizations. The thermal decomposition kinetics of the complex were investigated under non-isothermal condition using the Achar differential method and the Coats-Redfern integral method. The kinetic equation for the second step corresponds to the mechanisms of the Zhuralev, Lesokin and Templman equation were obtained. 展开更多
关键词 terbium(Ⅲ) complex TAURINE salicylaldehyde schiff-base thermodecomposition kinetics
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Synthesis, Characterization and Bioactivity of Complexes of Rare Earth with Bis-Schiff Base from Furoylpyrazolone 被引量:4
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作者 李锦州 李刚 于文锦 《Journal of Rare Earths》 SCIE EI CAS CSCD 2000年第3期233-236,共4页
Eleven new complexes of rare earths with bis-Schiff base derived from N,N'-bis[(1-phenyl-3-methyl-5-oxo-4-pyrazolinyl) alpha-furylmethylidyne] ethylenediimine ((HPM alpha FP)(2)en) were synthesized. On the basis o... Eleven new complexes of rare earths with bis-Schiff base derived from N,N'-bis[(1-phenyl-3-methyl-5-oxo-4-pyrazolinyl) alpha-furylmethylidyne] ethylenediimine ((HPM alpha FP)(2)en) were synthesized. On the basis of elemental analysis and molar conductance, a general formula of the complexes, [RE(HPM alpha FP)(2)en(NO3)(2)]NO3(RE = La, Pr, Nd, Sm, Eu, Th, Dy, Ho, Er, Yb,Y), was given. The complexes were characterized by IR, UV-visible, H-1 NMR, C-13 NMR and fluorescence. The results show that the bis-Schiff base is a quadridentate ligand and the rare earth ions exhibit coordination of eight in the complexes. The antibacterial experiments indicate that they have high antibacterial activities against S. aureus, B. subtillis, E. coli, E. carotovora, C. flaccumfaciens. 展开更多
关键词 rare earths FUROYLPYRAZOLONE bis-schiff base bioactivity
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A Novel Potassium Complex Based on the Taurine-salicylaldehyde Schiff Base:Synthesis,Crystal Structure and Spectroscopy 被引量:1
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作者 冯勋 赵建社 +2 位作者 王利亚 师新阁 孙倩 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2010年第5期706-711,共6页
A novel two-dimensional self-assembly network formulated as [K(TSSB)]n (TSSB= taurine-salicylaldehyde Schiff base) has been synthesized via the reaction of salicylaldehyde with taurine at the presence of potassium... A novel two-dimensional self-assembly network formulated as [K(TSSB)]n (TSSB= taurine-salicylaldehyde Schiff base) has been synthesized via the reaction of salicylaldehyde with taurine at the presence of potassium hydroxide in water-methanol solution,and was structurally characterized by elemental analysis,IR,UV-VIS spectra and X-ray diffraction.It crystallizes in the monoclinic system,space group P21/c with a=20.245(3),b=7.2905(9),c=7.5458(10),β= 94.1920(10)o,V=1110.8(2)3,Mr=267.34,Z=4,Dc=1.599 g/cm3,μ(MoKα)=0.663 mm-1 and F(000)=552.The units of K[TSSB] are linked into a one-dimensional double chain structure via the sulfonic groups from the taurine-salicylaldelyde Schiff base,and such chains are further extended through O-K-O bond interactions resulting in a two-dimensional supramolecular architecture.In the complex,the K(I) ion displays a slightly distorted dodecahedral geometry with an eight-coordination number. 展开更多
关键词 crystal structure potassium(I) complex taurine-salicylaldehyde schiff base hydrogen bond interactions
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Synthesis and spectral studies of macrocyclic Pb(Ⅱ),Zn(Ⅱ),Cd(Ⅱ)and La(Ⅲ) complexes derived from 1,4-bis(3-aminopropoxy)butane with metal nitrate and salicylaldehyde derivatives
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作者 Salih Ilhan Hamdi Temel Salih Pasa 《Chinese Chemical Letters》 SCIE CAS CSCD 2009年第3期339-343,共5页
Eight new macrocyclic complexes were synthesized by template reaction of 1,4-bis(3-aminopropoxy)butane with metal nitrate and 1,3-bis(2-formylphenyl)propane or 1,4-bis(2-formylphenyl)butane and their structures ... Eight new macrocyclic complexes were synthesized by template reaction of 1,4-bis(3-aminopropoxy)butane with metal nitrate and 1,3-bis(2-formylphenyl)propane or 1,4-bis(2-formylphenyl)butane and their structures were proposed on the basis of elemental analysis, FTIR, UV-vis, molar conductivity measurements, ^1H NMR and mass spectra. The metals to ligand molar ratios of the complexes were found to be 1: 1. The complexes are 1:2 electrolytes for Pb(II), Zn(II) and Cd(II) complexes and 1:3 electrolytes for La(III) as shown by their molar conductivities (Am) in DMSO at 10^-3 mol L^-1. Due to the existence of free ions in these complexes, such complexes are electrically conductive. The configurations of La(III) and Pb(II) were proposed to probably octahedral and Zn(II) and Cd(II) complexes were proposed to probably tetrahedral. 展开更多
关键词 Macrocyclic schiff base Macrocyclic complexes salicylaldehyde derivatives 1 4-bis(3-aminopropoxy)butane
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Two Cobalt(II) Complexes Derived from the Hydrolysis Product of Di-Schiff Base Ligand N,N'-Bis-(1-benzimidazo-2-yl-ethylidene)-ethane-1,2-diamine:Preparation,Characterization and Crystal Structure of the 6-Coordinate Species [CoL_2]X·H_2O (X = ClO_4^-, N 被引量:1
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作者 夏昌坤 吴小园 +2 位作者 吴鼎铭 蒋晓瑜 卢灿忠 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2008年第7期805-811,共7页
The reactions of Co(C1O4)2·6H2O and Co(NO3)2.6H2O with the di-Schiff base ligand N,N'-bis-(1-benzimidazo-2-yl-ethylidene)-ethane-1,2-diamine (LA) in ethanol have been investigated. The reactions of LA wi... The reactions of Co(C1O4)2·6H2O and Co(NO3)2.6H2O with the di-Schiff base ligand N,N'-bis-(1-benzimidazo-2-yl-ethylidene)-ethane-1,2-diamine (LA) in ethanol have been investigated. The reactions of LA with excess amount of cobalt salts yield the six-coordinate complexes [CoL2](ClO4)E·H2O 1 and [CoL2](NO3)E·H2O 2 as isolatable products (L= N-(1- benzimidazo-2-yl-ethylidene)-ethane-1,2-diamine), where L is a tri-dentate mono-Schiff base ligand, resulting from the hydrolysis of the precursor di-Schiff base LA. Both complexes were characterized by X-ray crystallography. Crystal data for complex 1: monoclinic, space group P21/c, a = 11.9214(10), b = 23.5828(17), c = 14.0387(12)A, β = 135.219(4)°, C22H30Cl2CoN8O9, Mr = 680.37, V = 2780.1(4) A^3 ,Z = 4, Dc = 1.625 g/cm^3,μ(MoKa) = 0.876 mm^-1, F(000) = 1404, the final R = 0.0725 and wR = 0.1530 for 5726 observed reflections (I 〉 2σ(I)). Crystal data for complex 2: monoclinic, space group P21/c, a = 18.2162(16), b = 10.0610(6), c = 18.593(2)A, β = 130.099(3)°, C22H30CoN10O7, Mr = 605.49, V = 2606.5(4) A3 Z = 4, Dc = 1.543 g/cm^3,μ(MoKa) = 0.722 mm^-1, F(000) = 1260, the final R = 0.0619 and wR = 0.1429 for 5194 observed reflections (I 〉 2σ(I)). X-ray diffraction analysis reveals that each cobalt atom in the two complexes is chelated by six nitrogen atoms from two tridentate iigands L, exhibiting a slightly distorted octahedral coordination sphere. In both complexes, the strong hydrogen-bonding interactions between the lattice waters and N-H groups of the ligands result in 1D chains which are further connected by ClO4^- (or NO3^-) groups to form a 3D framework. In complex 2, the strong π-π interactions increase the stability of the structure. 展开更多
关键词 2-acetylbenzimidazole di-schiff base ligand crystal structure hydrolysis hydrogen-bonding interactions coordination complex N N -bis-(1-benzimidazo-2-yl-ethylidene)-ethane- 1 2-diamine N-(1-benzimidazo-2-yl-ethylidene)-ethane- 1 2-diamine
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Bis Crown Ethers( Ⅸ)——Caesium Selective PVC Membrane Electrodes Based on Schif f Base Type of Bis Crown Ethers
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作者 Chen Xiaochun, Wang Defen , Wang Denjing and Hu Hongwen (Department of Chemistry, Nanjing University, Nanjing) 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1991年第4期255-260,共6页
Recently, much attention has been focused on the use of neutral carrier species as membrane components to extract ions from aqueous solution into a hydrophobic membrane phase. Some potassium-or caesium-selective elect... Recently, much attention has been focused on the use of neutral carrier species as membrane components to extract ions from aqueous solution into a hydrophobic membrane phase. Some potassium-or caesium-selective electrodes based on bis-benzo-15-crown-5 or bis-benzo-18-crown-6 containing ester or other linkage were prepared by K. Kimura and K. W. Fung. The selective coefficients K;, K;,or K;, K were 2.6×10;, 1.9×10;and 1.7×10;, respectively. 展开更多
关键词 CAESIUM schiff base bis crown ether Neutral carriers
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Synthesis, Characterizations, Biological, and Molecular Docking Studies of Some Amino Acid Schiff Bases with Their Cobalt(II) Complexes
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作者 Mabrouk M. Salama Soad G. Ahmed Safaa S. Hassan 《Advances in Biological Chemistry》 2017年第5期182-194,共13页
The synthesis and structural characterization of cobalt(II) complexes of amino acid Schiff bases was prepared from Salicylaldehyde and three amino acid (Valine, Leucine, and Isoleucine)?in basic medium. The metal comp... The synthesis and structural characterization of cobalt(II) complexes of amino acid Schiff bases was prepared from Salicylaldehyde and three amino acid (Valine, Leucine, and Isoleucine)?in basic medium. The metal complexes was synthesized by treating an ethanolic solution of the ligand with appropriate amount of metal salts [1:2] [M:L] ratio. The synthesized Schiff bases and their metal complexes have been investigated on the bases of elemental chemical analysis, FTIR, electronic spectral,?1HNMR,?13CNMR, MS, molar conductance and magnetic susceptibility measurements. The electronic spectra of the metal complexes and their magnetic susceptibility measurements suggest octahedral structures are the probable coordination geometries for the isolated complexes. The Schiff bases and their metal complexes were preliminary scanned against various strains of microbes to study their biological effect. 展开更多
关键词 schiff base salicylaldehyde CO(II) Metal Complex Spectroscopic Techniques biOLOGICAL Effect MOLECULAR Docking
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对羟基苯甲醛Schiff碱的合成、表征及生物活性
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作者 吴江萌 刘泽含 +6 位作者 杨雪丽 段旺达 陈宣博 吴蕙臣 张叶松 任思梦 许瑞波 《合成化学》 CAS 2024年第10期874-880,共7页
Schiff是优良配体,并具有抑菌、抗氧化和抗肿瘤等生物活性。以对羟基苯甲醛为原料,分别与4-甲基、5-甲基-2-氨基吡啶反应,合成了2个对羟基苯甲醛Schiff碱,即对羟基苯甲醛缩4-甲基-2-氨基吡啶(1)和对羟基苯甲醛缩5-甲基-2-氨基吡啶(2)。... Schiff是优良配体,并具有抑菌、抗氧化和抗肿瘤等生物活性。以对羟基苯甲醛为原料,分别与4-甲基、5-甲基-2-氨基吡啶反应,合成了2个对羟基苯甲醛Schiff碱,即对羟基苯甲醛缩4-甲基-2-氨基吡啶(1)和对羟基苯甲醛缩5-甲基-2-氨基吡啶(2)。采用熔点、红外光谱、紫外可见光谱、核磁共振氢谱和碳谱以及高分辨质谱等对产物结构进行了全面表征。利用微量肉汤稀释法研究其抑菌活性,结果标明:化合物1和化合物2对大肠杆菌、金黄色葡萄球菌和枯草芽孢杆菌的最小抑菌浓度(MIC)为0.500 mg/mL,对溶藻性弧菌、副溶血性弧菌的MIC为0.250 mg/mL。采用DPPH·法研究了化合物1的抗氧化活性,发现其对DPPH·自由基清除率为68.1%。 展开更多
关键词 对羟基苯甲醛schiff 2-氨基吡啶 水杨醛schiff 抑菌作用 抗氧化活性
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含香豆素骨架水杨醛Schiff base荧光材料的制备及光谱性能研究 被引量:4
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作者 冯雷 禹兴海 +2 位作者 金淑萍 徐建斌 刘娜 《化学试剂》 CAS CSCD 北大核心 2012年第3期257-260,共4页
以间苯二酚和乙酰乙酸乙酯为原料,草酸做催化剂,在无溶剂的条件下,经Pechmann反应催化合成了7-羟基-4-甲基香豆素,再经硝化、还原得到3-氨基7-羟基-4-甲基香豆素。利用3-氨基7-羟基-4-甲基香豆素与水杨醛缩合反应,制备了新型的含香豆素... 以间苯二酚和乙酰乙酸乙酯为原料,草酸做催化剂,在无溶剂的条件下,经Pechmann反应催化合成了7-羟基-4-甲基香豆素,再经硝化、还原得到3-氨基7-羟基-4-甲基香豆素。利用3-氨基7-羟基-4-甲基香豆素与水杨醛缩合反应,制备了新型的含香豆素骨架水杨醛Schiff base衍生物,其结构由IR、1HNMR和元素分析确证。通过研究化合物紫外吸收光谱及荧光光谱发现该化合物具有优异光学活性。 展开更多
关键词 7-羟基-4-甲基香豆素 水杨醛 schiff base 光学性能
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双Schiff-Base取代的3,5-二(芳亚甲基)-4-哌啶酮衍生物的合成及活性研究
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作者 姚彬荣 刘方正 +5 位作者 刘岩 杨威 侯迷 陈琴 王春华 侯桂革 《分析测试学报》 CAS CSCD 北大核心 2018年第4期411-418,共8页
通过Claisen-Schmidt缩合、Sn Cl2/HCl还原和Schiff-Base缩合反应得到9个双Schiff-Base取代的3,5-二(芳亚甲基)-4-哌啶酮衍生物(3a-i),并通过核磁共振(NMR)、傅立叶变换红外光谱(FTIR)、元素分析进行结构表征,采用MTT法,评价其对SGC-79... 通过Claisen-Schmidt缩合、Sn Cl2/HCl还原和Schiff-Base缩合反应得到9个双Schiff-Base取代的3,5-二(芳亚甲基)-4-哌啶酮衍生物(3a-i),并通过核磁共振(NMR)、傅立叶变换红外光谱(FTIR)、元素分析进行结构表征,采用MTT法,评价其对SGC-7901(胃癌细胞)、A549(肺癌细胞)、HCT116(结肠癌)、He La(宫颈癌细胞)、He PG2(肝癌细胞)、K562(人慢性骨髓性白血病细胞)、THP-1(人急性单核粒细胞白血病细胞)、U937(组织细胞淋巴瘤细胞)、MCF-7(乳腺癌细胞)等细胞系的抗肿瘤活性以及对LO2(人正常肝细胞)的细胞毒性。结果显示,部分化合物对某些细胞的IC50值小于1.0μmol/L。细胞毒性实验显示,化合物3a,d-f对正常细胞LO2的细胞毒性比阿霉素(DOX)小。构效关系显示F取代的化合物3a-c活性优于Br和Cl取代的化合物3d-i。通过PCR、Western Blot以及分子对接模型初步说明3b和3i对Bcl-2蛋白有显著的抑制作用。 展开更多
关键词 3 5-二(芳亚甲基)-4-哌啶酮 席夫碱 抗肿瘤 细胞毒性 分子对接
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Synthesis and Crystal Structure of a Dinuclear Cu(II) Complex with Tridentate Schiff Base and Azido Bridge 被引量:1
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作者 LINHong FENGYunLong GAOShan 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2005年第4期375-378,共4页
A new dinuclear copper(II) complex ([Cu(C12H17N2O)(N3)]2, C24H34Cu2N10O2) has been synthesized and characterized by X-ray structure determination. It crystallizes in the monoclinic system, space group P21/c with a =... A new dinuclear copper(II) complex ([Cu(C12H17N2O)(N3)]2, C24H34Cu2N10O2) has been synthesized and characterized by X-ray structure determination. It crystallizes in the monoclinic system, space group P21/c with a = 18.529(4), b = 10.933(2), c = 14.534(3) ?, β = 111.07(3)°, V = 2748(1) ?3, Z = 4, Mr = 621.69, F(000) = 1288, Dc = 1.503 g/cm3 and μ(MoKα) = 1.590 mm?1. The structure was refined to R = 0.0647 and wR = 0.1846 for 4406 observed reflections (I > 2σ(I)). The asymmetric unit comprises two halfmolecules. The complex is a centrosymmetric dimmer in which the copper atoms are penta-coordinated by three coordination atoms from the corresponding tridentate Schiff base ligand and two bridging azide anions. The Cu(II)…Cu(II) average distance is 3.350(1) ?. 展开更多
关键词 dimethylamino-1-propylamine salicylaldehyde schiff base Cu(II) complex crystal structure bridging azide
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The Rapid Synthesis of Schiff-Base without Solvent under Microwave Irradiation 被引量:1
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作者 HaiJianYANG WenHauSUN 《Chinese Chemical Letters》 SCIE CAS CSCD 2002年第1期3-6,共4页
A microwave-assisted preparation of a series of Schiff-base via efficient condensation of salicylaldehyde and aryl amines without solvent is described in high yield as well as environmental friendship reaction in orga... A microwave-assisted preparation of a series of Schiff-base via efficient condensation of salicylaldehyde and aryl amines without solvent is described in high yield as well as environmental friendship reaction in organic synthesis. 展开更多
关键词 Microwave-assisted reaction schiff-base salicylaldehyde aryl amine.
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Acylhydrazide and Isatin Schiff Bases as Alternate UV-Laser Desorption Ionization (LDI) Matrices for Low Molecular Weight (LMW) Peptides Analysis 被引量:1
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作者 Syed Ghulam Musharraf Aisha Bibi +5 位作者 Najia Shahid Muhammad Najam-ul-Haq Momin Khan Muhammad Taha Uzma Rasool Mughal Khalid Mohammed Khan 《American Journal of Analytical Chemistry》 2012年第12期779-789,共11页
Matrix-assisted laser desorption/ionization (MALDI) is a preferred and widely used mass spectrometric technique for the analysis of macromolecules. Limited UV-LDI matrices are available for the analysis of biomolecule... Matrix-assisted laser desorption/ionization (MALDI) is a preferred and widely used mass spectrometric technique for the analysis of macromolecules. Limited UV-LDI matrices are available for the analysis of biomolecules due to the restricted structural features to serve in the laser desorption/ionization mechanism with a problem of background signals appearing in the low mass region. This paper describes the application of Schiff base derivatives of acylhydrazide and isatin as alternate UV-LDI matrices for the analysis of peptides with significantly low background signals. Thirty one compounds have been successfully employed as matrices for the analysis of low molecular weight (LMW) peptides (α-Cyano-4-hydroxycinnamic acid (HCCA), a preferred choice for peptide analysis. 展开更多
关键词 MALDI-MS LDI Matrix Acylhydrazide schiff baseS bis-schiff baseS of ISATIN schiff baseS of ISATIN PEPTIDES
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Synthesis and Crystal Structure of a Dinuclear Cu(II) Complex [Cu(C_(12)H_(17)N_2O)(NCS)]_2 with Tridentate Schiff Base Ligand N-(Salicylidene)-3-dimethylaminopropylamine
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作者 林鸿 冯云龙 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2005年第3期346-348,共3页
A new dinuclear copper(II) complex (Cu(C12H17N2O)(NCS)2, C26H34Cu2N6O2S2) has been synthesized and characterized by X-ray structure determination. It crystallizes in the triclinic system, space group P1 with a = 11.... A new dinuclear copper(II) complex (Cu(C12H17N2O)(NCS)2, C26H34Cu2N6O2S2) has been synthesized and characterized by X-ray structure determination. It crystallizes in the triclinic system, space group P1 with a = 11.289(2), b = 12.071(2), c = 12.113(2) ?, α = 72.90(3), β = 83.76(3), γ = 65.60(3)°, V = 1436.7(5) ?3, Z = 2, Mr = 653.79, F(000) = 676, Dc = 1.511 g/cm3, μ(MoKα) = 1.660 mm?1, the final R = 0.0334 and wR = 0.0856 for 5047 observed reflections (I > 2σ(I)). The asymmetric unit comprises two half-molecules. The complex is a centrosymmetric dimmer in which each copper(II) is coordinated in the equatorial plane to the N-(salicylidene)-3- dimethylaminopropylamine ligand through the deprotonated phenolic oxygen atom as well as the nitrogen atoms of imine and amine. The fourth coordination site is occupied by the nitrogen atom of NCS?, while the axial one by the symmetrically related phenoxy oxygen of the other monomeric unit. The Cu(II)…Cu(II) average distance is 3.110(1) ?. 展开更多
关键词 dimethylamino-1-propylamine salicylaldehyde schiff base Cu(II) complex crystal structure
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Catalytic Effect of Cobalt and Iron Complexes Incorporating Bis(2-aldiminoethyl)amine Ligands on Ethylene Oligomerization
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作者 WANG Mei DAI Dong +2 位作者 ZHU Hong jun WANG Hui SUN Li cheng 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2003年第2期231-234,共4页
Complexes [MCl 2{CH 3N(CH 2CH 2N[CDS1]CR 1R 2) 2}]((3, M=Co, R 1=H, R 2=Ph ; 4, M=Fe, R 1=H, \{R 2=Ph\}; 5, M=Co, R 1=R 2=Ph) were prepared and characterized by IR spectra and elemental analysis. The combination of ea... Complexes [MCl 2{CH 3N(CH 2CH 2N[CDS1]CR 1R 2) 2}]((3, M=Co, R 1=H, R 2=Ph ; 4, M=Fe, R 1=H, \{R 2=Ph\}; 5, M=Co, R 1=R 2=Ph) were prepared and characterized by IR spectra and elemental analysis. The combination of each of complexes 3-5 with ethylaluminoxane(EAO), respectively, was found to be moderately active for ethylene oligomerization to low carbon olefins. The activity of 113 kg oligomers·mol -1 Co·h -1 for complex 3(100 mol of EAO, 180 ℃ and 1 8 MPa ethylene) was observed with a selectivity of 93% to C 4-10 olefins, of which 96% were linear C4 10 olefins. The catalytic properties of complexes 3-5 were compared with those of analogous P,P coordinated complexes [MCl 2{CH 3N(CH 2CH 2PPh 2) 2}](1, M=Co; 2, \{M=\}Fe). 展开更多
关键词 Cobalt and iron complexes schiff base bis(2-aldiminoethyl)amine Ethylene oligomerization Low carbon olefin
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The Role of Aromatic Schiff Bases in the Dyes Techniques
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作者 Karema Masoude Abuamer Abdussalam Ali Maihub +3 位作者 Marei Miloud El-Ajaily Abdunnaser Mohamed Etorki Mortaja Mohamed Abou-Krisha Majda Albashir Almagani 《International Journal of Organic Chemistry》 2014年第1期7-15,共9页
Anil compounds are Schiff bases derived from aniline moiety containing phenyl or substituted phenyl group, which sometimes called Azo dyes. These Schiff bases can be directly prepared from aromatic amine with aromatic... Anil compounds are Schiff bases derived from aniline moiety containing phenyl or substituted phenyl group, which sometimes called Azo dyes. These Schiff bases can be directly prepared from aromatic amine with aromatic carbonyl groups, which are stable and can be manipulated under different and suitable conditions. The phenomena of coordination of Schiff bases with metal ions give the Schiff bases the good advantages to be introduced in the dyes synthesis. The classification of dyes is based on the chemical structure or on the basis of the chromophoric system. The metal complex dyes are combinations of dyestuff and metal ions, in which the coordination complex can be applied or used to be improvement factors in dye techniques. The investigation and the characterization of the resulted dyes were performed by using different physical techniques. The produced dyes were applied to different fibres, such as sheep wool and goat hair with two Schiff bases synthesised from salicylaldehyde either with 2-aminophenol or 2-aminobenzyl alcohol. Also the investigation includes the effect of mordant type on the dyeing process. 展开更多
关键词 DYES 2-AMINOPHENOL 2-Aminobenzyl Alcohol salicylaldehyde schiff bases COMPLEXATION
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Synthesis and Characterization of Cr(III) &Fe(II) Bis(2-Methoxybenzylidene)Biphenyl-4,4'-Diamine Complexes
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作者 Younis O. Ben Amer Rehab N. El-Daghare +2 位作者 Ahmed N. Hammouda Rashd M. El-Ferjani Fatin M. Elmagbari 《Open Journal of Inorganic Chemistry》 2020年第1期6-14,共9页
Bis(2-methoxybenzylidene)biphenyl-4,4'-diamine Schiff base was prepared by the reaction of benzidine and O-methoxy benzaldehyde 1:2 reaction. Two complexes of this ligand with Cr(III) and Fe(II) were prepared. All... Bis(2-methoxybenzylidene)biphenyl-4,4'-diamine Schiff base was prepared by the reaction of benzidine and O-methoxy benzaldehyde 1:2 reaction. Two complexes of this ligand with Cr(III) and Fe(II) were prepared. All prepared compounds were analysed using elemental analysis, IR, 1H NMR and mass spectroscopy. The formation of proposed structures, including the free ligand and complexes were confirmed. 展开更多
关键词 schiff base Complexes Spectroscopy bis(2-Methoxybenzylidene)biphenyl-4 4'-Diamine
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Synthesis and Properties of Double Calix[4]arene Derivatives Linked by Schiff-base in the Lower Rim
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作者 Hu Shan YUAN Zhi Tang HUANG(Institute of Chemistry The Chinese Academy of Sciences. Beijing 100080) 《Chinese Chemical Letters》 SCIE CAS CSCD 1999年第7期539-542,共4页
25,27-bis-(2-aminoethoxy)-p-tert-butylcalix[4]arene was linked to double calix[4]arene derivatives by the Schiff-base moiety in its lower rim. They behave strong ability to complex with Ph2+, Cu2+ and Co2+.
关键词 25 27-bis-(2-aminoethoxy)-p-tert-butylcalix[4] arenes schiff-base double arene
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