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1.
《高分子科学杂志,A辑:纯化学与应用化学》2013,50(11):1361-1368
ABSTRACT The polymer-bound Schiff base ternary cobalt complexes (PS-SalPhe-Co-L (L=Phen, Bipy and 8HQ)) have been prepared from the polymer bound Schiff base ligand, cobalt salt and the second ligand, such as 1,10-phenanthroline(phen), 2,2′-bipyridyl(bipy) and 8-quinolinol(8HQ). The polymer-bound Schiff base ternary cobalt complexes were characterized by the infrared spectra and ICP-AES. The catalytic activity of the complexes has been studied in aerobic epoxidation of long-chain linear aliphatic olefins. It showed that 1-octene or 1-decene can be directly oxidized by molecular oxygen catalyzed by PS-SalPhe-Co-L (L=Phen, Bipy and 8HQ), which afford the 1,2-epoxy alkane. 相似文献
2.
3.
邻香草醛缩丙氨酸盐及邻菲咯啉与Ln(Ⅲ)三元配合物的合成与表征 总被引:3,自引:1,他引:2
某些水扬醛类氨基酸的金属配合物具有特殊的性质和应用[1 ,2 ] ,近年来 ,过渡金属离子的此类希夫碱配合物有不少报道。本工作在无水乙醇体系中 ,用稀土硝酸盐与邻香草醛缩丙氨酸钾及邻菲咯啉作用合成了未见文献报道的三种混配配合物 ,并对其组成和配位方式进行了研究。1 实验部分1 1 主要仪器与试剂美国Bio RadFIS1 65型红外光谱仪 ,KBr压片 ;美国PE2 4 0 0 (Ⅱ )型元素分析仪 ;岛津UV 30 0 0双光束分光光度计 ;DDS 1 1A型电导率仪 ;德国STA40 9ZP热分析仪。Ln2 O3纯度高于 99 9% ;DL α 丙氨酸为生化试剂… 相似文献
4.
P. Venkataiah Y. Laxmi Kumari M. Srinivas Mohan Harinath B. Bathina 《Journal of Chemical Sciences》1994,106(4):813-818
Interaction of adenosine-5′-triphosphate (ATP) with a series of binary Cu(II) complexes (ML) (where L =o-phenanthroline (Phen), 5-nitrophenanthroline (NPhen), 5-methyl phenanthroline (MPhen), 2,9-dimethylphenanthroline (DPhen),
2,9-dimethyl-4,7-diphenylphenanthroline (DPhPhen), 2,2′-bipyridyl (Bipy), bis(imidazol-2-yl) methane (BIM), oxalic acid (Ox),
glycine (Gly), alanine (Ala), valine (Val), phenylalanine (Phe), tryptophan (Trp), methionine (Met), histidine (His) or aspartic
acid (Asp) to form ternary complexes (MLA) was investigated by a pH-metric technique and the formation constants were evaluated
at 35.0°C and μ = 0.2 M (KNO3). The influence exerted by ligand L on the binding of ATP to Cu(II) was quantitatively assessed and ATP was found to bind
more strongly when L = bidentate nitrogen donors, relatively less strongly when L = amino acids and least strongly when L
= a bidentate oxygen donor. With respect to the nitrogen donor ligands the stability of the ternary complexes decreases in
the order NPhen > Phen > Bipy > MPhen > DPhen > BIM ≈ DPhPhen, whereas in ternary complexes containing amino acids the stability
decreases in the order: Phe ≈ Trp > Ala > Gly ≈ Val ≈ Met > His > Asp. The trends in the stability of the various complexes
are discussed in terms of the nature of the metal ion and the two ligands in its coordination sphere. 相似文献
5.
Three Eu(Ⅲ) ternary complexes,Eu(hfa-H) 3(Phen),Eu(hfa-H) 3(Bipy) and Eu(hfa-H) 3(Bath)(hfa = hexafluoroacetylacetonate,Phen = 1,10-phenanthroline,Bipy = 2,2 0-bipyridine,Bath = bathophenanthroline),were synthesized.Their luminescent properties were studied by incorporating deuterated Eu(Ⅲ) complexes in a poly(methylmethacrylate)(PMMA) matrix,and the results indicated that luminescent PMMA including Eu(hfa-D) 3(Bath) showed promising results for applications to novel organic Eu(Ⅲ) devices,such as the high-power laser materials.Additionally,all the three Eu(Ⅲ) complexes exhibited good thermostabilization. 相似文献
6.
The study on the effect and mechanism of the second ligands on the luminescence properties of terbium complexes 总被引:1,自引:1,他引:0
Fu Y Zhang J Lv Y Cao W 《Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy》2008,70(3):646-650
The binary complex of Tb(III) with N-phenylanthranilic acid (N-HPA) was synthesized, and the ternary complexes were synthesized by introducing 1,10-phenanthroline (Phen), 2,2'-dipyridyl (Bipy), trioctylphosphine oxide (TPPO) as the second ligand, respectively. These complexes were characterized by infrared spectra, UV spectra and fluorescence spectra. The effect and mechanism of different second ligands on the fluorescent intensity of the terbium N-phenylanthranilic acid complexes was discussed. It showed that all the complexes exhibited ligand-sensitized green emission. The luminescence intensity increased in the sequence of Tb(N-PA)(3)Phen相似文献
7.
Dang F Liu W Zheng J 《Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy》2007,67(3-4):714-718
A new Schiff base ligand: 3-(naphthalene-2-ylimino)-1-phenylbutan-1-one (NPB) was synthesized. Its fluorescence intensity with terbium(III) was greatly enhanced by the addition of 1,10-phenanthroline (Phen) in the chloroform solution. The mechanism of fluorescence enhancement was studied. The results indicate the formation of a ternary NPB-Phen-Tb complex. In the ternary system, Phen can transfer the energy absorbed by Phen and NPB to Tb(3+). 相似文献
8.
Boghaei DM Gharagozlou M 《Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy》2007,67(3-4):944-949
A series of new ternary zinc(II) complexes [Zn(L(1-10))(phen)], where phen is 1,10-phenanthroline and H(2)L(1-10)=tridentate Schiff base ligands derived from the condensation of amino acids (glycine, l-phenylalanine, l-valine, l-alanine, and l-leucine) and salicylaldehyde-5-sulfonates (sodium salicylaldehyde-5-sulfonate and sodium 3-methoxy-salicylaldehyde-5-sulfonate), have been synthesized. The complexes were characterized by elemental analysis, IR, UV-vis, (1)H NMR, and (13)C NMR spectra. The IR spectra of the complexes showed large differences between nu(as)(COO) and nu(s)(COO), Deltanu (nu(as)(COO)-nu(s)(COO)) of 191-225 cm(-1), indicating a monodentate coordination of the carboxylate group. Spectral data showed that in these ternary complexes the zinc atom is coordinated with the Schiff base ligand acts as a tridentate ONO moiety, coordinating to the metal through its phenolic oxygen, imine nitrogen, and carboxyl oxygen, and also with the neutral planar chelating ligand, 1,10-phenanthroline, coordinating through nitrogens. 相似文献
9.
Manikandan R Viswanathamurthi P Muthukumar M 《Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy》2011,83(1):297-303
Ruthenium(II) hydrazone Schiff base complexes of the type [RuCl(CO)(B)(L)] (were B=PPh(3), AsPh(3) or Py; L=hydrazone Schiff base ligands) were synthesized from the reactions of hydrazone Schiff base ligand (obtained from isonicotinoylhydrazide and different hydroxy aldehydes) with [RuHCl(CO)(EPh(3))(2)(B)] (where E=P or As; B=PPh(3), AsPh(3) or Py) in 1:1 molar ratio. All the new complexes have been characterized by analytical and spectral (FT-IR, electronic, (1)H, (13)C and (31)P NMR) data. They have been tentatively assigned an octahedral structure. The synthesized complexes have exhibited catalytic activity for oxidation of benzyl alcohol to benzaldehyde and cyclohexanol to cyclohexanone in the presence of N-methyl morpholine N-oxide (NMO) as co-oxidant. They were also found to catalyze the transfer hydrogenation of aliphatic and aromatic ketones to alcohols in KOH/Isopropanol. 相似文献
10.
以稀土氯化物、席夫碱水杨醛缩苯丙氨酸和邻菲咯啉为配体,在无水乙醇溶液中反应,制备了一类新型稀土三元配合物,通过元素分析、摩尔电导、核磁共振、红外光谱、拉曼光谱,确定了该配合物的化学组成:RE(L)( Phen) Cl (H2O)(RE= Ce3 ,Sm3 , Eu3 ,Y3 ,Gd 3 ;L=席夫碱水杨醛缩苯丙氨酸;Phen=邻菲咯啉).通过抗菌实验对其抑菌效果进行研究,结果表明配合物对大肠杆菌、金黄色葡萄球菌及白色念珠菌都有较强的抑制作用,抗菌谱广;用流式细胞检测法对配合物使癌细胞凋亡能力做了初步研究,证明其具有使癌细胞凋亡的效果. 相似文献
11.
Duygu İNCİ 《应用有机金属化学》2020,34(12):e6016
NOO-type tridentate Schiff base, N-salicylidene-2-aminobenzoic acid, (H2L), and its ternary Cu (II) complex containing H2L Schiff base and 4,7-dimethyl-1,10-phenanthroline (4,7-dmphen), [Cu(4,7-dmphen)(H2L)]27H2O, have been synthesized and characterized by CHN analysis, ESI-MS, FTIR, and single-crystal X-ray diffraction techniques. The interaction of alone H2L Schiff base ligand and ternary Cu (II) complex with biomacramolecules {calf thymus DNA (CT-DNA) and bovine serum albumin (BSA)} has been investigated by electronic absorption and fluorescence spectroscopy. The experimental results indicate that H2L Schiff base ligand and ternary Cu (II) complex bind to CT-DNA by means of a moderate intercalation mode. Furthermore, the fluorescence quenching mechanism between H2L Schiff base ligand and ternary Cu (II) complex with BSA possesses a static quenching process. Radical scavenging activity of H2L Schiff base ligand and ternary Cu (II) complex was measured in terms of EC50, using the DPPH and H2O2 methods. Biomacromolecule interactions and scavenging activity studies revealed that ternary Cu (II) complex yielded better results than H2L Schiff base ligand alone. 相似文献
12.
Acetaldehyde was introduced onto the side chains of polysulfone, and then Schiff base reactions were carried out between the introduced acetaldehyde and ortho-aminophenol (OAP) or meta-aminophenol (MAP). Two bidentate Schiff base (B) ligands of acetaldehyde/aminophenol type, OAPB and MAPB, were bonded on the side chains of polysulfone, and two new bidentate Schiff base ligand functionalized-polysulfones, PSF-OAPB and PSF-MAPB, were obtained. The triplet state energies of OAPB and MAPB are well matched with the resonant level energy of Tb(III), and the Tb(III) complexes emit the strong characteristic fluorescence of Tb(III) (green luminescence). Complexes of Eu(III) have no fluorescence emission because of the mismatching of the energy levels. In comparison, the fluorescence intensity of the binary complex PSF-(MAPB)3-Tb(III) is stronger than that of the binary complex PSF-(OAPB)3-Tb(III) because of the structured difference of the chelating ring. The ternary complexes PSF-(MAPB)3-Tb(III)-(Phen)1 (Phen represents 1,10-phenanthroline) and PSF-(OAPB)3-Tb(III)-(Phen)1 have stronger fluorescence emissions than the corresponding binary complexes. The fluorescence emission intensities of solid films of the complexes are stronger than that of their solutions. The prepared luminescent polymer-Tb(III) complexes containing acetaldehyde/aminophenol type bidentate Schiff base ligands have very high quantum yields (80–86%), reflecting the high intramolecular energy transfer efficiencies from the ligands to Tb(III). 相似文献
13.
Two new zinc(II) complexes, [Zn2L2Cl4]·2[ZnL(CH3OH)Cl2] 1 and [ZnL2(NO3)2] 2, were synthesized by reacting ZnX2·nH2O (X = Cl-, NO3-) and a Schiff base ligand 2-[(4-me- thylphenylimino)methyl]-6-methoxyphenol (C15H15NO2, L) which was obtained by the condensation of o-vanillin (2-hydroxy-3-methoxybenzaldehyde) with p-toluidine. Both 1 and 2 were characterized by single-crystal X-ray diffraction technique, elemental analysis, molar conductance, FT-IR, UV-Vis, 1H-NMR spectra and thermogravimetric analysis. The Schiff base ligand and its zinc(II) complexes have been tested in vitro to evaluate their antibacterial activity against bacteria, viz., Escherichia Coli, Staphylococcus aureus and Bacillus Subtilis. The results show that these complexes have higher activity than the corresponding free Schiff base ligand against the same bacteria. 相似文献
14.
Luminescence of Nanosized Supramolecular Material of Mesoporous Molecular Sieve and Samarium (Ⅲ) Complex 总被引:2,自引:0,他引:2
YIN Wei ZHANG Mai-sheng ** School of Chemistry Chemical Engineering Sun Yat-sen 《高等学校化学研究》2003,19(4):504-507
IntroductionThe synthesis of mesoporous silica has greatlyexpanded the possibilities for the design of the porestructure materials[1] . Because of their large sur-face areas and porosity,these materials have greatpotential application in environmental and industri-al fields.A greatmany significant advanced resultshave been achieved in this field including the syn-theses of the related materials[2— 4] ,the develop-ment of the novel properties[5— 8] ,the discovery ofnew theories on synthetic c… 相似文献
15.
Vidya Rani Chandrasekhar Kesavan Mookkandi Palsamy Ravi Lokesh Daniel Thangadurai T. Indra Gandhi N. Rajesh Jegathalaprathaban Rajagopal Gurusamy 《应用有机金属化学》2019,33(3)
Three new metal complexes [Cu(L)2] (1), [Co(L)2] (2) and [Zn(L)2] (3) have been prepared by the reaction of hydrated salts of metal (II) acetate with new Schiff base ligand HL, [2‐((4‐(dimethylamino)phenylimino)methyl)‐4,6‐di‐t‐butylphenol] and characterized by different physico‐chemical analyses such as elemental analysis, single XRD, 1H NMR, FTIR and UV–Vis spectroscopic techniques. Their biomolecular docking, antimicrobial and cytotoxicity studies have also been demonstrated. The proposed structure of Schiff base ligand HL and complex 2 are confirmed by Single crystal X‐ray crystallography study. This analysis revealed that metal (II) complexes remain in distorted tetrahedral coordination environments. The electronic properties such as HOMO and LUMO energies are carried out by gaseous phase DFT/B3LYP calculations using Gaussian 09 program. Complex 1 showed a good binding propensity to the DNA and HSA, during the assessment of docking studies. Schiff base ligand HL and its metal (II) complexes, 1–3 screened for their in vitro antimicrobial activities using the disc diffusion method against selected microbes. Complex 1 shows higher antimicrobial activity than complexes 2, 3 and Schiff base ligand HL. According to the results obtained from the cytotoxic studies, Schiff base ligand HL and its metal (II) complexes 1–3 have better cytotoxicity against MCF‐7 cell lines with potency higher than the currently used chemotherapeutic agent cyclophosphamide. 相似文献
16.
首次报道了新型Schiff碱配合物-双[N,N'-亚乙基-2,2'-(苯亚甲基)二(3,4-二甲基吡咯-5-醛缩亚胺)]合单金属配合物MH~2[M-Mn(Ⅱ)、Fe(Ⅲ)Cl、Cr(Ⅲ)Cl、Cu(Ⅱ)、Co(Ⅱ)、Ni(Ⅱ)、Zn(Ⅱ)的合成方法及光谱特征。 相似文献
17.
Two new zinc(Ⅱ) complexes, [Zn2L2aCl4]·2[ZnL(CH3OH)Cl2] 1 and [ZnL2(NO3)2] 2,were synthesized by reacting ZnX2·nH2O (X = Cl-, NO3-) and a Schiff base ligand 2-[(4-me-thylphenylimino)methyl]-6-methoxyphenol (C15H15NO2, L) which was obtained by the condensation of o-vanillin (2-hydroxy-3-methoxybenzaldehyde) with p-toluidine. Both 1 and 2 were characterized by single-crystal X-ray diffraction technique, elemental analysis, molar conductance, FT-IR, UV-Vis,1H-NMR spectra and thermogravimetric analysis. The Schiff base ligand and its zinc(Ⅱ) complexes have been tested in vitro to evaluate their antibacterial activity against bacteria, viz., Escherichia Coli,Staphylococcus aureus and Bacillus Subtilis. The results show that these complexes have higher activity than the corresponding free Schiff base ligand against the same bacteria. 相似文献
18.
SUN Hong-liang 《高等学校化学研究》2005,21(1)
The stability constants of some ternary mixed-ligand complexes, Pt(Phen)(CA) , where Phen=1,10-phenanthroline and CA- =carboxylate, were determined by means of potentiometric pH titration in aqueous solutions(I=0.1 mol/L, KNO3; 25 ℃), and the stability of them was compared with that of the corresponding binary complexes. It was revealed that the ternary complexes containing phenylalkane carboxylates ligands(PCA-) are much more stable than those formed with formate and acetate. The results indicate that there exist the intramolecular aromatic-ring interactions between the phenanthroline ring of Phen and the phenyl moiety of ligand PCA- in the ternary mixed-ligand Pt(Phen)(PCA)- complexes. The extent of the stacking interactions, which depends on the number of methylene groups between the phenyl moieties and the coordinated phenylalkane carboxylate groups, was calculated. The best-fitted stack was obtained for the complexes with 2-phenylacetate and 3-phenylpropionate as the ligands. 相似文献
19.
以1,4-二氯甲氧基丁烷为氯甲基化试剂,制备了氯甲基化聚苯乙烯(CMPS),使CMPS的氯甲基与对羟基苯甲醛(HBA)发生亲核取代反应,将苯甲醛(BA)键合在聚苯乙烯侧链,制得改性聚苯乙烯PS-BA;使PS-BA的醛基与3-氨基吡啶(AP)的伯氨基发生席夫碱反应,在聚苯乙烯侧链合成与键合了双齿席夫碱(SB)配基,制得了侧链键合有双齿席夫碱配基的功能化聚苯乙烯PS-SB。 采用红外光谱(FTIR)和核磁共振氢谱(1H NMR)对其结构进行了表征。 以大分子PS-SB为第一配体,以邻菲罗啉(Phen)为第二配体,与Eu(Ⅲ)离子配位,分别制得了二元和三元高分子-稀土配合物PS-(SB)3-Eu(Ⅲ)和PS-(SB)3-Eu(Ⅲ)-(Phen),初步探索了配合物的荧光发射性能。 实验结果表明,对于CMPS与HBA之间的亲核取代反应,使用极性较强的N,N-二甲基乙酰胺为溶剂比较适宜,80 ℃为适宜的反应温度。 大分子配体PS-SB对Eu(Ⅲ)离子的荧光发射可产生明显的敏化作用,二元和三元高分子-稀土配合物均发射出较强的Eu(Ⅲ)离子的特征荧光。 相似文献
20.
Al-Sha'alan NH 《Molecules (Basel, Switzerland)》2007,12(5):1080-1091
A series of new copper(II), cobalt(II), nickel(II), manganese(II), iron(III), and uranyl(VI) complexes of the Schiff base hydrazone 7-chloro-4-(benzylidene-hydrazo)quinoline (HL) were prepared and characterized. The Schiff base behaves as a monobasic bidentate ligand. Mononuclear complexes with the general composition [ML2(Cl)m(H2O)2(OEt)n] x xEtOH (M = Cu(II), Co(II), Ni(II), Mn(II), Fe(III) or UO2(VI); m and n = 0-1; x = 1-3) were obtained in the presence of Li(OH) as a deprotonating agent. The nature of bonding and the stereochemistry of the complexes have been deduced from elemental analyses, infrared, electronic spectra, magnetic susceptibility and conductivity measurements. An octahedral geometry was suggested for all the complexes except the Cu(II) and UO2(VI) ones. The Cu(II) complex has a square-planar geometry distorted towards tetrahedral, while the UO2(VI) complex displays its favored heptacoordination. The Schiff base ligand, HL, and its complexes were tested against one strain gram +ve bacteria (Staphylococcus aureus), gram -ve bacteria (Escherichia coli), and Fungi (Candida albicans). The prepared metal complexes exhibited higher antibacterial activities than the parent ligand and their biopotency is discussed. 相似文献