Synthesis and Reactivity in Inorganic and Metal-organic Chemistry最新文献_第3页

Template Synthesis and Characterization of 12 and 14‐Membered Pendant‐Armed Tetraazamacrocyclic Transition Metal Complexes: A Photoelectron Spectroscopic Study 12和14元垂臂四氮杂环过渡金属配合物的模板合成和表征:光电子能谱研究

Synthesis and Reactivity in Inorganic and Metal-organic Chemistry Pub Date : 2004-11-01 DOI: 10.1081/SIM-200026581

S. Srivastava, A. Kalam

引用次数: 9

Synthesis and Spectroscopic Study of a New Lanthanum(III) Complex of 3,3′‐Benzylidenedi‐4‐hydroxycoumarin 一种新的3,3 ' -苄基二烯- 4 -羟基香豆素镧(III)配合物的合成与光谱研究

Synthesis and Reactivity in Inorganic and Metal-organic Chemistry Pub Date : 2004-11-01 DOI: 10.1081/SIM-200026618

N. Trendafilova, I. Kostova, I. Manolov, G. Bauer, T. Mihaylov, I. Georgieva

引用次数: 7

Labile Ligand‐Substitution Reactions of Intermediate‐Spin Six‐Coordinate Cobalt(III) Complexes 中间自旋六配位钴(III)配合物的不稳定配体取代反应

Synthesis and Reactivity in Inorganic and Metal-organic Chemistry Pub Date : 2004-11-01 DOI: 10.1081/SIM-200026582

C. Becker

引用次数: 1

A Novel Method for the Synthesis of Rare Earth Carbonates 合成稀土碳酸盐的新方法

Synthesis and Reactivity in Inorganic and Metal-organic Chemistry Pub Date : 2004-11-01 DOI: 10.1081/SIM-200026601

M. Refat

引用次数: 15

The Template Synthesis, Characterization, and Thermal Investigation of New Heterocyclic Binucleating Schiff Base Complexes 新型杂环双核席夫碱配合物的模板合成、表征及热表征

Synthesis and Reactivity in Inorganic and Metal-organic Chemistry Pub Date : 2004-11-01 DOI: 10.1081/SIM-200026585

M. Sönmez, M. Şekerci

引用次数: 8

Green Chemistry Approaches to Condensation Reactions of Formylferrocene with Active Methylene Containing Compounds 二茂甲酰基铁与活性含亚甲基化合物缩合反应的绿色化学途径

Synthesis and Reactivity in Inorganic and Metal-organic Chemistry Pub Date : 2004-09-01 DOI: 10.1081/SIM-200026298

Yinjuan Bai, Jun Lu, Haiying Gan, Zhenjun Wang, Zhen Shi

引用次数: 4

Synthesis, IR, Magnetic, Solid Reflectance, and Thermal Characterization of Transition Metal Chelates with 2‐(5‐Acetylamino‐2‐hydroxyphenylazo)‐benzoic Acid 2 -(5 -乙酰氨基- 2 -羟基苯基偶氮)-苯甲酸过渡金属螯合物的合成、红外、磁性、固体反射率和热表征

Synthesis and Reactivity in Inorganic and Metal-organic Chemistry Pub Date : 2004-09-01 DOI: 10.1081/SIM-200026299

G. Mohamed, Z. Zaki

{"title":"Synthesis, IR, Magnetic, Solid Reflectance, and Thermal Characterization of Transition Metal Chelates with 2‐(5‐Acetylamino‐2‐hydroxyphenylazo)‐benzoic Acid","authors":"G. Mohamed, Z. Zaki","doi":"10.1081/SIM-200026299","DOIUrl":"https://doi.org/10.1081/SIM-200026299","url":null,"abstract":"Abstract The azo ligand 2‐(5‐acetylamino‐2‐hydroxyphenylazo)benzoic acid (H2L) is derived from the diazotization of 4‐acetamidophenol with anthranilic acid. Metal(II) and (III) chelates were prepared and characterized by elemental and thermal analyses, conductance, IR, mass, magnetic, and diffuse reflectance spectra. The complexes were found to have the formulae [Cr(HL)2]Cl · H2O; [Cd(HL)2] · 2H2O; [M(HL)(H2O) z ]X · nH2O for M = Co(II) (X = Cl, z = 1, n = 2), M = Ni(II) (X = Cl, z = 1, n = 2.5); M = Cu(II) (X = AcO, z = 2, n = 2), and M = Zn(II) (X = AcO, z = 1, n = 2); and [Fe(HL)Cl2(H2O)] · 2H2O. The molar conductance data reveal that the Cd(II) and Fe(III) chelates are non‐electrolytes, while the Cr(III), Co(II), Ni(II), Cu(II), and Zn(II) chelates are 1:1 electrolytes. IR spectra show that the ligand is coordinated to the metal ions in a terdentate manner with ONO donor sites of the phenolic OH, azo–N, and carboxylic OH. Magnetic and solid reflectance spectra were used to infer the coordinating capacity of the ligand and the geometrical structure of these complexes. The mass spectra give the possible molecular ion fragments resulting from the fragmentation of the chelates. The thermal behavior of these chelates shows that water molecules (coordinated and uncoordinated) and anions are removed in two successive steps followed immediately by decomposition of the ligand molecule in the subsequent steps. The relative thermal stability of the anhydrous chelates is evaluated. The final decomposition products are found to be the corresponding metal oxides. The thermodynamic activation parameters, such as, E*, ΔH*, ΔS*, and ΔG* are calculated from the TG curves and discussed.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82754524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Synthesis and Characterization of New Transition and Actinide Metal Complexes of a Hydrazone Ligand. Mixed‐Ligand Complexes, Pyrolysis Products, and Biological Activity 新型过渡金属和锕系金属腙配体的合成与表征。混合配体配合物、热解产物和生物活性

Synthesis and Reactivity in Inorganic and Metal-organic Chemistry Pub Date : 2004-09-01 DOI: 10.1081/SIM-200026202

M. Mashaly, Atef T. Ramadan, B. A. El‐Shetary, Areej K. Dawoud

{"title":"Synthesis and Characterization of New Transition and Actinide Metal Complexes of a Hydrazone Ligand. Mixed‐Ligand Complexes, Pyrolysis Products, and Biological Activity","authors":"M. Mashaly, Atef T. Ramadan, B. A. El‐Shetary, Areej K. Dawoud","doi":"10.1081/SIM-200026202","DOIUrl":"https://doi.org/10.1081/SIM-200026202","url":null,"abstract":"Abstract The chelating properties the hydrazone ligand 2‐carboxyphenylhydrazo‐ethylcyanoacetate (H2L) have been studied. A new series of binary mononuclear complexes were prepared from the reaction of the hydrazone ligand (H2L) with the metal ions, Cd(II), Cu(II), Ni(II), Co(II), Th(IV), and UO2(VI), in the presence of LiOH as a deprotonating agent. The binary Cu(II) complex of H2L was reacted with the ligands 1,10‐phenanthroline or 2‐aminopyridine to form mixed‐ligand complexes. The binary complexes of Cu(II) and Ni(II) are suggested to have octahedral configurations. The Cd(II) and Co(II) complexes are suggested to have tetrahedral and/or square‐planar geometries, respectively. The Th(IV) and UO2(VI) complexes are suggested to have octahedral and dodecahedral geometries, respectively. The mixed‐ligand complexes have octahedral configurations. Also, new complexes were obtained pyrolytically as the previous complexes decompose through several isolable as well as non‐isolable intermediates during heating. The structures of all complexes and the corresponding thermal products were elucidated by elemental analyses, conductance, IR and electronic absorption spectra, magnetic moments, 1H NMR and TG–DSC measurements, as well as by mass spectroscopy. The ligand and some of the metal complexes were found to activate the enzyme pectinlyase.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75568015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Synthesis, Magnetic and Spectral Studies on Copper(II) Complexes with Bidentate Thiosemicarbazones 双齿硫代氨基脲铜配合物的合成、磁性及波谱研究

Synthesis and Reactivity in Inorganic and Metal-organic Chemistry Pub Date : 2004-09-01 DOI: 10.1081/SIM-200026270

S. Chandra, U. Kumar

引用次数: 6

Synthesis, Structural, and Thermal Aspects of Dioxouranium(VI) Coordination Compounds of Semicarbazones Derived from 4‐Aminoantipyrine 4 -氨基安替比林衍生的缩氨基脲类二氧铀(VI)配位化合物的合成、结构和热性能

Synthesis and Reactivity in Inorganic and Metal-organic Chemistry Pub Date : 2004-09-01 DOI: 10.1081/SIM-200026288

R. Agarwal, I. Chakraborti, H. Agarwal

{"title":"Synthesis, Structural, and Thermal Aspects of Dioxouranium(VI) Coordination Compounds of Semicarbazones Derived from 4‐Aminoantipyrine","authors":"R. Agarwal, I. Chakraborti, H. Agarwal","doi":"10.1081/SIM-200026288","DOIUrl":"https://doi.org/10.1081/SIM-200026288","url":null,"abstract":"Abstract A series of 18 new coordination compounds of dioxouranium(VI) with semicarbazones of 4‐aminoantipyrine, viz., 4[N‐(p‐dimethylaminobenzylidene)amino]antipyrine semicarbazone (DABAAPS), 4[N‐(2′‐nitrobenzylidene)amino]antipyrine semicarbazone (2′‐NO2BAAPS), and 4[N‐(3′‐nitrobenzylidene)amino]antipyrine semicarbazone (3′‐NO2BAAPS) of the general composition [UO2L2X2] (X = Br, I, or NCS), [UO2L2](ClO4)2, [UO2L(NO3)2], and [UO2L(OOCCH3)2] (L = DABAAPS, 2′‐NO2BAAPS, and 3′‐NO2BAAPS) were synthesized in non‐aqueous solution and characterized on the basis of elemental analyses, electrical conductivity, magnetic moments, and IR spectral studies. In all of the complexes, these ligands act as neutral tridentate (N, N, O) ligands. In all dioxouranium(VI) complexes, the ν1 and ν3 modes are assigned to 845–825 cm−1 and 930–910 cm−1, respectively. Wilson's G‐F matrix method was used to determine the stretching and interaction force constants from which the U–O bond distances were calculated using Badger's formula. The probable coordination number of U(VI) varies from 8–10 in these complexes. The thermal properties of these compounds are also discussed.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78174468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3