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Study on Property of Salicylaldehyde Schiff Base Metal Complexes for Catalytic Oxidation of Model Sulfides 被引量:2
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作者 Jia Chaoyang Liang Shuyuan +4 位作者 Liu Lei Shao Xue Zhang Longli Wang Fangzhu Jiang Cuiyu 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2021年第1期58-66,共9页
Seven kinds of Schiff base metal complexes(C1-C7)were synthesized by the reaction of substituted salicylaldehyde Schiff base with cobalt nitrate,nickel nitrate,and copper nitrate,respectively.The oxygen carrying perfo... Seven kinds of Schiff base metal complexes(C1-C7)were synthesized by the reaction of substituted salicylaldehyde Schiff base with cobalt nitrate,nickel nitrate,and copper nitrate,respectively.The oxygen carrying performance,and the catalytic property of complexes for the oxidation of model sulfides 1-hexanethiol,dibutyl sulfide,and 2-methylthiophene along with their influencing factors were explored,while the oxidized products of the model sulfides were also analyzed and characterized.The results show that the catalytic oxidation property of the complexes is determined by their oxygen carrying performance and solubility in n-octane.The oxygen carrying performance of the complexes is mainly affected by the central ion species,the electronic effects,and the spatial effects of the substituents as well as the degree of conjugation.More specifically,the oxygen carrying performance can be improved by enhancing the oxygenation capacity of the central metal ions,increasing the electron donating ability of the ligand substituent,and diminishing the steric hindrance as well as extending the conjugated chain.Complexes C7 were found to be with high oxygen carrying capacity and high solubility in n-octane,which shows the best catalytic oxidation property,and the oxidation conversion rates for 1-hexylthiol,dibutyl sulfide,and 2-methylthiophene are 74.2%,65.1%,and 22.7%,respectively.Upon using the oxidation catalyst of Schiff base metal complexes,three sulfides can be oxidized by oxygen to form sulfones and sulfoxides.1-Hexanethiol and dibutyl sulfide will continue to be oxidized to form sulfates and sulfites. 展开更多
关键词 schiff base metal complexes 1-hexanethiol dibutyl sulfide 2-methylthiophene catalytic oxidation structureactivity relationship
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Synthesis and characterization of a novel schiff base metal complexes and their application in determination of iron in different types of natural water 被引量:2
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作者 Mostafa M. H. Khalil Eman H. Ismail +2 位作者 Gehad G. Mohamed Ehab M. Zayed Ahmed Badr 《Open Journal of Inorganic Chemistry》 2012年第2期13-21,共9页
A novel, simple approach to the synthesis of macrocyclic Schiff base ligand resulted from the condensation of bisaldehyde and ethylenediamine was prepared (7, 8, 15, 16, 17, 18-hexahydrodibenzo (a, g) (14) annulene) (... A novel, simple approach to the synthesis of macrocyclic Schiff base ligand resulted from the condensation of bisaldehyde and ethylenediamine was prepared (7, 8, 15, 16, 17, 18-hexahydrodibenzo (a, g) (14) annulene) (L) and its complexes were synthesized and characterized using different physicochemical studies as elemental analysis, FT-IR, 1H NMR, conductivity, magnetic properties, thermal analysis, and their biological activities. The spectroscopic data of the complexes suggest their 1:1 complexe structures which are investigated by elemental analysis, FT-IR, 1H NMR, conductivity, magnetic properties, thermal analysis, and their biological activities. The spectroscopic studies suggested the octahedral structure for the all complexes. The spectroscopic data of the complexes suggest their structure in which (N2O2) group act as a tetradentate ligand and two chlorides as monodentate ligands. Also electronic spectra and magnetic susceptibility measurements indicate octahedral structure of these complexes. The synthesized Schiff base and its metal complexes also were screened for their antibacterial and antifungal activity. Here we report the effect of a neutral chelating ligand on the complexation with iron to determine it in different types of natural water using recovery test. The activity data show that the metal complexes to be more potent/ antibacterial than the parent Schiff base ligand against one or more bacterial species. 展开更多
关键词 NOVEL schiff base Transition metal complexES and NATURAL Water
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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 of Chiral Schiff Base Metal Complex Inducing CD and Elucidation of Structure of Adsorption on Surface of Gold Nanoparticles 被引量:1
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作者 Minako Oshima Minoru Matsuno +3 位作者 Tsutsumi Yuki Sunaga Nobumitsu Tomoyuki Haraguchi Takashiro Akitsu 《International Journal of Organic Chemistry》 2017年第2期153-170,共18页
We have prepared supramolecular systems of chiral Schiff base Ni(II), Cu(II), Zn(II) complexes and colloidal gold nanoparticles (AuNP) of 10 nm diameters. They demonstrated that direct adsorption of chiral Schiff base... We have prepared supramolecular systems of chiral Schiff base Ni(II), Cu(II), Zn(II) complexes and colloidal gold nanoparticles (AuNP) of 10 nm diameters. They demonstrated that direct adsorption of chiral Schiff base metal complex on the surface of AuNP owing to observation of clear induced CD spectra for the first time. We observed and discussed induced CD bands on AuNP from chiral Schiff base Ni(II), Cu(II), Zn(II) complexes. 展开更多
关键词 CHIRAL schiff base metal complex Gold Nanoparticle
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Synthesis and Characterization of Schiff Base Metal Complexes Derived from Cefotaxime with 1<i>H</i>-indole-2,3-dione (Isatin) and 4-N,N-dimethyl-aminobenzaldehyde
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作者 Ahlam Jameel Abdulghani Rasha Khuder Hussain 《Open Journal of Inorganic Chemistry》 2015年第4期83-101,共19页
This work involved the synthesis of two Schiff base derivatives of cefotaxime antibiotic (CFX) namely: [sodium3-(acetoxymethyl)-7-((Z)-2-(methoxyimino)-2-(2-((E)-2–oxoindolin-3-ylide-neamino) thiazol-4-yl)acetamido)-... This work involved the synthesis of two Schiff base derivatives of cefotaxime antibiotic (CFX) namely: [sodium3-(acetoxymethyl)-7-((Z)-2-(methoxyimino)-2-(2-((E)-2–oxoindolin-3-ylide-neamino) thiazol-4-yl)acetamido)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate]. (0.5) Methanol (LI) and [sodium3-(acetoxymethyl)-7-((2Z)-2-(2-(4-dimethylamino) benzylideneamino) thiazol-4-yl)-2-(methoxyimino)acetamido)-8-oxo-5-thia-1-azabicyclo [4.2.0] oct-2-ene-2-carboxylate]. (0.5) Methanol (LII) from the condensation reaction of the antibiotic with 1H-Indole-2,3-dione(isatin) and -N, N-dimethyl amino benzaldehyde respectively. Metal complexes of the two Schiff base ligands with Co(II), Ni(II), Cu(II), Cd(II), Pd(II) and Pt(IV) ions were prepared by reacting each ligand with the metal salts in refluxing ethanol. The chemical structures of the two ligands as well as the stereo-chemical structures and geometries of the studied metal complexes were suggested depending the results obtained from CHN and TG analysis, NMR, FTIR, and atomic absorption spectrophotometry, electronic spectra, magnetic moments and conductivity measurements. The mole ratio of the ligands to the metal ion was 1:1 with tridentate bonding behaviors of the coordinating ligands with the metal ions. 展开更多
关键词 CEFOTAXIME schiff bases metal complexes Antibacterial Activity
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Antioxidant activity of bovine serum albumin binding amino acid Schiff-bases metal complexes 被引量:2
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作者 Rong Min Wang Juan Juan Mao Jing Feng Song Cai Xia Huo Yu Feng He 《Chinese Chemical Letters》 SCIE CAS CSCD 2007年第11期1416-1418,共3页
Glutamic acid-salicylaldehyde Schiff-base metal complexes are bound into bovine serum albumin (BSA), which afforded BSA binding Schiff-base metal complexes (BSA-SalGluM, M=Cu, Co, Ni, Zn). The BSA binding metal co... Glutamic acid-salicylaldehyde Schiff-base metal complexes are bound into bovine serum albumin (BSA), which afforded BSA binding Schiff-base metal complexes (BSA-SalGluM, M=Cu, Co, Ni, Zn). The BSA binding metal complexes were characterized by UV-vis spectra and Native PAGE. It showed that the protein structures of BSA kept after coordinating amino acid Schiff-bases metal complexes. The effect of the antioxidant activity was investigated. The results indicate that the antioxidant capacity of BSA increased more than 10 times after binding Schiff-base metal complexes. 展开更多
关键词 Natural polymer schiff-base metal complexes Glutamic acid Bovine serum albumin (BSA) ANTIOXIDANTS Hydroxyl radicals
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Synthesis, Characterization and Antimicrobial Activities of Sulfadiazine Schiff Base and Phenyl Dithiocarbamate Mixed Ligand Metal Complexes
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作者 Benjamin Chibuzo Ejelonu Sulaiman Adeoye Olagboye +2 位作者 Oluwatoba Emmanuel Oyeneyin Oladipo Adebayo Ebiesuwa Oluwatomisin Emmanuel Bada 《Open Journal of Applied Sciences》 2018年第8期346-354,共9页
Sulfadiazine Schiff base and Phenyl dithiocarbamate mixed ligand metal complexes have been synthesized and characterized. The characterization of metal complexes is based on the results of the solubility, colour, melt... Sulfadiazine Schiff base and Phenyl dithiocarbamate mixed ligand metal complexes have been synthesized and characterized. The characterization of metal complexes is based on the results of the solubility, colour, melting points and elemental analysis as well as the spectroscopic studies. The results obtained from the spectroscopic spectra revealed from the UV-visible showed the presence of chromophoric groups while the FTIR results confirmed that the metals coordinated through the two nitrogen atoms of Sulfadiazine Schiff base and sulphur atom of the N-phenyl dithiocarbamate. Also the antimicrobial activities of the metal complexes proved that the metal complexes are more active than the parent ligands. 展开更多
关键词 SULFADIAZINE schiff base PHENYL DITHIOCARBAMATE metal complexes Antimicrobial Activities Spectral Studies
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CHARACTERIZATION OF SOME SCHIFF BASES OF HETEROCYCLIC COMPOUNDS AND THEIR TRANSITION METAL COMPLEXES
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作者 Geng ZHANG Jun Ming TANG Quan Ling LOU Zan SHI Department of Chemistry,Henan Normal University,Xinxiang,453002 《Chinese Chemical Letters》 SCIE CAS CSCD 1991年第9期681-682,共2页
Some new Schiff bases were synthesized by the condensation of equimolar quantities of salicylaldehyde and 2-amino-5-phenylazo-pyridine or its derivatives in dry benzene(1):Metal complexes of the type ML_2and M'L_3... Some new Schiff bases were synthesized by the condensation of equimolar quantities of salicylaldehyde and 2-amino-5-phenylazo-pyridine or its derivatives in dry benzene(1):Metal complexes of the type ML_2and M'L_3 where M=Cu^(2+),Co^(2+),Ni^(2+),Mn^(2+)Pd^(2+),M'=Fe^(3+)and L=different newly synthesized monobasic Schiff bases were prepared in absolute ethanolic medium(2)and characterized by elementary analysis,conductance measurements,infrared spectra,electronic spectra,magnetic moments studies. 展开更多
关键词 CHARACTERIZATION OF SOME schiff baseS OF HETEROCYCLIC COMPOUNDS AND THEIR TRANSITION metal complexES
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Optical Properties of Chiral Azo-Schiff Base Mn(II) and Zn(II) Complexes with Silver Nanoparticles
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作者 Kazuya Saiga Tomoyuki Haraguchi +6 位作者 Yasutaka Kitahama Takuya Hosokai Hiroyuki Matsuzaki Dohyun Moon Mutsumi Sugiyama Michikazu Hara Takashiro Akitsu 《Journal of Materials Science and Chemical Engineering》 2021年第4期1-10,共10页
<div style="text-align:justify;"> Herein we have originally designed chiral azo-salen Mn(II) and Zn(II) complexes for interacting silver nanoparticles (AgNPs) exhibiting localized surface plasmon reson... <div style="text-align:justify;"> Herein we have originally designed chiral azo-salen Mn(II) and Zn(II) complexes for interacting silver nanoparticles (AgNPs) exhibiting localized surface plasmon resonance (LSPR). Understanding excited state and reaction intermediate during light irradiation to return to ground state may be important for such composite systems. Therefore, we investigated such optical properties for systems using time-resolved luminescence and transient absorption measurements. DMSO solutions of the four newly prepared and characterized complexes (<strong>MMn</strong><strong>, MZn, CMn,</strong> and <strong>CZn</strong>) and ethanol solutions of the composite materials of each complex with AgNPs were served for optical measurements. The time-correlated single photon counting (TCSPC), the streak camera which is much shorter period of time than TCSPC and transient absorption measurement, was performed for the eight samples. The fluorescence lifetime of the sole complexes and the composite materials with AgNPs was derived from curve-fitting analysis of luminescence decay curves of TCSPC. Lifetime of the composite systems with AgNPs was longer than that of the corresponding sole metal complexes for three cases. It was revealed that composite systems may go through three reaction intermediates during relaxation from excited state to ground state. </div> 展开更多
关键词 schiff base metal complexes AZOBENZENE Silver Nanoparticles Fluorescence Lifetime
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Biological Activities of Schiff Bases and Their Complexes: A Review of Recent Works 被引量:1
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作者 Wail Al Zoubi 《International Journal of Organic Chemistry》 2013年第3期73-95,共23页
Schiff bases are the most widely used organic compounds. They have been shown to exhibit a broad range of biological activities, including antifungal, antibacterial, antimalarial, antiproliferative, anti-inflammatory,... Schiff bases are the most widely used organic compounds. They have been shown to exhibit a broad range of biological activities, including antifungal, antibacterial, antimalarial, antiproliferative, anti-inflammatory, antiviral, and antipyretic properties. This review summarizes the synthesis and biological activities of Schiff bases and their complexes. 展开更多
关键词 schiff baseS metal complexES ANTIBACTERIAL BIOLOGICAL ACTIVITIES
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Synthesis, Characterization and Biological Activity of Transition Metals with Schiff Base Derived from Adamantaneamineand o-Vanillin 被引量:2
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作者 ZHAO Guoliang LI Liangchao LIU Xinghai ZHANG Pinghua 《Wuhan University Journal of Natural Sciences》 EI CAS 2006年第2期427-431,共5页
Five new solid complexes were synthesized about transition metals with Schiff base( L, C18H23NO2 ) derived from adamantaneamine and o-vanillin, and characterized by elemental analysis, molar conductance, infrared sp... Five new solid complexes were synthesized about transition metals with Schiff base( L, C18H23NO2 ) derived from adamantaneamine and o-vanillin, and characterized by elemental analysis, molar conductance, infrared spectra, UV-vis spectra, thermal analysis. Their chemical formula are [ML2](ClO4)2 ( M= Mn, Co, Ni, Cu, Zn), and the coordination numbers are four, The antibacterial activity of Schiff base ligand and its complexes was studied. 展开更多
关键词 transition metal complex schiff base adamantaneamine crvanillin biological activity
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Preparation, Characterization and Antimicrobial Studies of Mn(II) and Fe(II) Complexes with Schiff Base Ligand Derived from 2-aminophenol and 3-formyl-2-hydroxy-6-methoxyquinoline 被引量:1
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作者 Abubakar Muhammad Jabbi Habu Nuhu Aliyu +1 位作者 Sulaiman Isyaku Abdullahi Muhammad Kabir 《Open Journal of Inorganic Chemistry》 2020年第2期15-24,共10页
Schiff base derived from 2-aminophenol and 3-formyl-2-hydroxy-6-methoxyquinoline and its Mn(II) and Fe(II) complexes were synthesized and characterized by melting point and decomposition temperature, elemental analysi... Schiff base derived from 2-aminophenol and 3-formyl-2-hydroxy-6-methoxyquinoline and its Mn(II) and Fe(II) complexes were synthesized and characterized by melting point and decomposition temperature, elemental analysis, molar conductivity, infrared (IR) spectral analysis, atomic absorption spectroscopy (AAS) analysis, solubility test, and magnetic susceptibility. The Fourier-transform infrared spectroscopy (FTIR) spectral data of the Schiff base determined showed <span><span style="font-family:Verdana;">a band at 1622 cm</span><sup><span style="font-family:Verdana;"><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8722;</span></span></span>1</span></sup><span style="font-family:Verdana;"> and this was assigned to the </span><i><span style="font-family:Verdana;">v </span></i><span style="font-family:Verdana;">(C=N), which is a feature of azomethine group. The same band was observed to shift to lower frequencies 1577 and 1599 cm</span><sup><span style="font-family:Verdana;"><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8722;</span></span></span>1</span></sup><span style="font-family:Verdana;"> in the complexes suggesting coordination of the Schiff base with the respective metal(II) ions. Molar conductan</span></span><span><span style="font-family:Verdana;">ce values 14.58 and 12.65 Ω</span><sup><span style="font-family:Verdana;"><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8722;</span></span></span>1</span></sup><span style="font-family:Verdana;"><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span></span>cm</span><sup><span style="font-family:Verdana;">2</span></sup><span style="font-family:Verdana;"><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span></span>mol</span><sup><span style="font-family:Verdana;"><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8722;</span></span></span>1</span></sup><span style="font-family:Verdana;"> show that the metal complexes were non-electrolyte in nature. The magnetic susceptibility of the complexes was determined and the gram magnetic susceptibility of the complexes was found to be positive, revealing that they are paramagnetic. The elemental analysis of the complexes for C, N and H determined suggested 1:1 metal to ligand ratio. The result of the antimicrobial studies showed that, the metal(II) complexes exhibited better antibacterial and antifungal activity than the Schiff base.</span></span> 展开更多
关键词 metal(II) complexes schiff base Antibacterial and Antifungal Studies
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Synthesis, Spectral Characterization and Thermal Behavior of Newly Derived La(III), Co(III) and Mn(II) Complexes with Schiff Base Derived from Methionine and Salicylaldehyde
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作者 Shariful Islam A. K. M. Nur Alam Siddiki +1 位作者 Shahida Begum Md. Abdus Salam 《Open Journal of Inorganic Chemistry》 2018年第2期55-69,共15页
Many metal complexes of Schiff base derived from different amino acids are widely employed as biologically active materials, especially as antibacterial agents. Three new metal [Co(III), Mn(II) and La(III)] complexes ... Many metal complexes of Schiff base derived from different amino acids are widely employed as biologically active materials, especially as antibacterial agents. Three new metal [Co(III), Mn(II) and La(III)] complexes with the Schiff base (L) derived from salicylaldehyde and amino acid (methionine) were synthesized and investigated by using various physico-chemical techniques such as elemental analysis, FTIR, UV-visible spectroscopy, magnetic measurement, thermo gravimetric analysis (TGA) and X-ray powder diffraction (XRD) method. From spectral studies, it has been concluded that the synthesized ligand acts as a tetra-dentate molecule, coordinates metal through azomethine nitrogen, sulfur, phenolic oxygen and carboxylate oxygen. UV-visible spectrophotometry showed the characteristic absorption bands corresponding to a square planar geometry for La(III) and Mn(II) metal complexes and tetrahedral geometry for Co(III) complex. The XRD data demonstrated that the manganese and cobalt complexes were crystalline but the lanthanum complex was amorphous in nature. The empirical formula of the synthesized complexes based on analytical data were [Co(C12H13SNO3)]·(NO3), [La(C12H13SNO3)](Cl)(H2O) and [Mn (C12H13SNO3)]. 展开更多
关键词 schiff base metal complexES Spectral Studies Thermal Behavior X-Ray Powder Diffraction
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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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Schiff bases及配合物的研究进展 被引量:8
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作者 焦元红 张前 《黄石理工学院学报》 2007年第3期38-41,共4页
希夫碱配体及与后过渡金属元素所形成的配合物,以其多样的结构和广泛的用途愈来愈受到人们的重视。文章综述了Schiff base配体及配合物的发展状况以及在生物化学、催化化学、分析化学、材料化学等方面的研究与应用,并指出了它的美好前景。
关键词 schiff base 配体 金属配合物
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L-苯丙氨酸Schiff Base金属铜配合物的合成、表征及理论研究
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作者 徐香 田明明 +1 位作者 刘清芝 王玲玲 《中国科技论文》 CAS 北大核心 2018年第18期2110-2116,共7页
氨基酸Schiff Base金属配合物由于在磁学、非线性光学材料、荧光探针、生物活性等诸多领域有着潜在的应用价值,受到了极大的关注。本文采用L-苯丙氨酸与2-乙酰吡啶反应,合成了一种新型Schiff Base。随后用溶剂热合成法制得蓝色的L-苯丙... 氨基酸Schiff Base金属配合物由于在磁学、非线性光学材料、荧光探针、生物活性等诸多领域有着潜在的应用价值,受到了极大的关注。本文采用L-苯丙氨酸与2-乙酰吡啶反应,合成了一种新型Schiff Base。随后用溶剂热合成法制得蓝色的L-苯丙氨酸Schiff Base金属铜的配合物单晶,并通过X射线单晶衍射、红外光谱、热重分析等对实验产物进行了结构解析和性质表征。为进一步了解其内在结构和性质,采用密度泛函理论,在分子水平进行了理论计算,对配合物进行了全优化,并在优化构型的基础上探讨了其平衡结构、NBO电荷分布和转移以及红外光谱等。结果表明,2个金属Cu(Ⅱ)离子分别与配体中的2个N、1个O原子配位,形成中心对称的六配位的弱氯桥双核化合物。该晶体属单斜晶系,晶胞参数a=1.246nm,b=0.886nm,c=1.451nm,α=90°,β=101.982(2)°,γ=90°。通过对单晶结构、NBO电荷、红外光谱的探讨,进一步说明了配位键的形成和配体在配位前后结构的变化,可为氨基酸金属配合物的合成、性质及应用研究提供理论参考。 展开更多
关键词 配位化学 schiffbase金属配合物 合成 表征 密度泛函理论
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Schiff base过渡金属配合物在不对称催化中的应用 被引量:1
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作者 杜向东 俞贤达 《合成化学》 CAS CSCD 1996年第4期372-379,共8页
综述了Schiffbase过渡金属配合物在不对称催化烯烃环氧化、氮杂环丙烷化、环丙烷化和其它催化反应中的应用研究进展,参考文献39篇。
关键词 过渡金属配合物 不对称催化 催化剂
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Synthesis of Enantiom eric Planar Square Ni^(2+) -and Cu^(2+) -Schiff Base Com plexes
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作者 ZHAO Jian-zhang WANG Shu-gang +4 位作者 WANG Xu LIU Ju-zheng QIAO Xiao-guang LI Yao-xian WANG Hua 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1999年第3期248-252,共5页
Enantiomeric four chelated planar square schiff base Cu 2+ and Ni 2+ complexes were synthesized using ( 1R,trans ) and ( 1S,trans) N,N bis(2 hydroxyphenyl methylene) 1,2 diaminocyclohexane. Th... Enantiomeric four chelated planar square schiff base Cu 2+ and Ni 2+ complexes were synthesized using ( 1R,trans ) and ( 1S,trans) N,N bis(2 hydroxyphenyl methylene) 1,2 diaminocyclohexane. The chirality could not be shown by usual UV Vis spectra. The intrinsic chiral difference of the enantiomeric complexes can be displayed by circular dichroism(CD) spectra. The Cotton effect of every polarlight sensitive absorption of one enantiomer will be the opposite of that of the other enantiomer. It was found that no tetrahedron form exists for Ni 2+ complexes, which was determined with UV Vis spectra and Electron Paramagnetic Resonance(EPR) measures. 展开更多
关键词 Chiral transition metal schiff base complex Circular dichroism(CD) Enantiomeric
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Synthesis, characterization and biocidal properties of platinum metal complexes derived from 2,6-diacetylpyridine (bis thiosemicarbazone)
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作者 Monika Tyagi Sulekh Chandra 《Open Journal of Inorganic Chemistry》 2012年第3期41-48,共8页
The coordination compounds of PdII, PtII, RhIII and IrIII metal ions with a Schiff base ligand (L) i.e. 2,6- diacetylpyridine bis(thiosemicarbazone) have been synthesized and characterized by elemental analyses, molar... The coordination compounds of PdII, PtII, RhIII and IrIII metal ions with a Schiff base ligand (L) i.e. 2,6- diacetylpyridine bis(thiosemicarbazone) have been synthesized and characterized by elemental analyses, molar conductance, magnetic susceptibility measurements, IR, NMR and electronic spectral studies. On the basis of molar conductance and elemental analyses the complexes were found to have composition [M(L)]Cl2 and [M’(L)Cl]Cl2, where M = Pd(II), Pt(II) and M’ = Rh(III), Ir(III). The spectral studies reveal that the complexes possess monomeric composition. Complexes of PdII and PtII were found to have four coordinated square planar geometry whereas the complexes of RhIII and IrIII posses six coordinated octahedral geometry. The ligand field parameters were calculated using various energy level diagrams. In vitro synthesized compounds and metal salts have been tested against some species of plant pathogenic fungi and bacteria in order to assess their antimicrobial properties. 展开更多
关键词 schiff base PLATINUM metal complexES Spectral Studies Biological Screening
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D-氨基葡萄糖Schiff碱及其金属配合物的抗菌活性 被引量:17
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作者 冯英 刘义 +5 位作者 谢昌礼 屈松生 乐芝凤 冯长建 沈昊宇 张香才 《物理化学学报》 SCIE CAS CSCD 北大核心 1996年第8期746-750,共5页
关键词 微量量热学 氨基葡萄糖 抗菌活性 席夫碱 配合物
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