The Synthesis And Structural Characterization Of Main Group And Transition Metal Complexes Supported By Nitrogen Based Ligands
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The Synthesis And Structural Characterization Of Main Group And Transition Metal Complexes Supported By Nitrogen Based Ligands
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Author :
language : en
Publisher:
Release Date : 2001
The Synthesis And Structural Characterization Of Main Group And Transition Metal Complexes Supported By Nitrogen Based Ligands written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
Nitrogen based monodentate and bidentate chelating ligands have captured a significant interest due to their ability to coordinate to a wide variety of elements. The â-diketimine, â-ketoiminato, formamidine, pyridineselenolate, and pyrazinecarboxamide ligands have all been employed in this study to further investigate the coordination preferences among main group and transition metals. Steric and electronic properties of these ligands can easily be altered by manipulating the substituents attached, thus leading to predictable structures with potential for many useful and significant applications. Investigations have shown that temperature, solvent, and metal halide employed are all key factors in the reaction outcomes. All of the complexes obtained throughout these studies have been characterized by X-ray crystallography along with other spectroscopic techniques, including NMR, IR, UV/Vis, and M/S. â-diketiminato ligands, [{N(R)C(Me)}2C(H)] where R = Dipp, Mes, commonly referred to as nacnac, have played an important role in the synthesis of novel pnictogenium complexes. Results show that through manipulation of the halide precursor, reaction stoichiometry, and the R substituent on the nacnac both N, N'- and N, C'-metal chelated complexes can be achieved. Additionally, â-ketiminato ligands, [RN(H)(C(Me))2C(Me)=O] where R = Dipp, and [RN(H)C(Me)CHC(Me)=O] where R = C2H4NEt2, have been studied. Both ligands were investigated with a range of d and p block metal halides and alkyls in order to compare and contrast the bulky, flexible, and even multi-dentate nature of each ligand. The preferred metal geometry remains constant for products with either ligand, but the steric protection offered by the individual ligands governs the nuclearity of the products, ranging from tetrameric cages to simple adducts. The formamidinate ligand, [RN(H)C(H)NR] where R = Dipp, was employed in synthesizing several aluminum and zinc complexes. In addition to their numerous applications as cata.
Main Group And Transition Metal Complexes Supported By Multidentate Tripodal Ligands That Feature Nitrogen Oxygen And Sulfur Donors
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Author :
language : en
Publisher:
Release Date : 2013
Main Group And Transition Metal Complexes Supported By Multidentate Tripodal Ligands That Feature Nitrogen Oxygen And Sulfur Donors written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
Chapter 5 describes two multidentate, L3X type ligands, which feature [CN3] and [CNO2] donors, namely tris(2 pyridylseleno)methane, [Tpsem]H, and bis(2-pyridonyl)(pyridin-2-yloxy)methane, [O-poBpom]H. They have been synthesized, characterized, and employed in the synthesis of zinc and cadmium complexes. Chapter 6 describes the synthesis and structural characterization of a new [Tp] ligand featuring an allyl substituent on the central boron atom, namely [allylTpBut]Li is reported. The compound reacts steadily with CH3CH2SH under 350 nm UV light via a thiol-ene click reaction. The resulting [CH3CH2S(CH2)3TpBut]Li complex can further react with metal halide. For example, the reaction of [CH3CH2S(CH2)3TpBut]Li with ZnI2 produced [CH3CH2S(CH2)3TpBut]ZnI at room temperature. This study provides a simple model on the immobilization of [Tp] metal complexes to the polymer chains with -SH terminals.
Transition Metal Dinitrogen Complexes
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Author : Yoshiaki Nishibayashi
language : en
Publisher: John Wiley & Sons
Release Date : 2019-05-06
Transition Metal Dinitrogen Complexes written by Yoshiaki Nishibayashi and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-05-06 with Science categories.
A comprehensive book that explores nitrogen fixation by using transition metal-dinitrogen complexes Nitrogen fixation is one of the most prominent fields of research in chemistry. This book puts the focus on the development of catalytic ammonia formation from nitrogen gas under ambient reaction conditions that has been recently repowered by some research groups. With contributions from noted experts in the field, Transition Metal-Dinitrogen Complexes offers an important guide and comprehensive resource to the most recent research and developments on the topic of nitrogen fixation by using transition metal-dinitrogen. The book is filled with the information needed to understand the synthesis of transition metal-dinitrogen complexes and their reactivity. This important book: -Offers a resource for understanding nitrogen fixation chemistry that is essential for explosives, pharmaceuticals, dyes, and all forms of life -Includes the information needed for anyone interested in the field of nitrogen fixation by using transition metal-dinitrogen complexes -Contains state-of-the-art research on synthesis of transition metal-dinitrogen complexes and their reactivity in nitrogen fixation -Incorporates contributions from well-known specialists and experts with an editor who is an innovator in the field of dinitrogen chemistry Written for chemists and scientists with an interest in nitrogen fixation, Transition Metal-Dinitrogen Complexes is a must-have resource to the burgeoning field of nitrogen fixation by using transition metal-dinitrogen complexes.
Synthesis And Structural Characterization Of Main Group Metal Complexes Of A Substituted Fulvalene Ligand 5 14 H Bisindeno 2 3 F H Naphthalene
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Author : Dennis Malaba
language : en
Publisher:
Release Date : 1995
Synthesis And Structural Characterization Of Main Group Metal Complexes Of A Substituted Fulvalene Ligand 5 14 H Bisindeno 2 3 F H Naphthalene written by Dennis Malaba and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Ligands categories.
The Synthesis And Structural Characterization Of Main Group And Lanthanide Metal Compounds Supported By The Multidentate N3c Donor Ligand Tris 1 Isopropylbenzimidazol 2 Yl Dimethylsilyl Methyl Tismpribenz M
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Author : David Alexander Vaccaro
language : en
Publisher:
Release Date : 2023
The Synthesis And Structural Characterization Of Main Group And Lanthanide Metal Compounds Supported By The Multidentate N3c Donor Ligand Tris 1 Isopropylbenzimidazol 2 Yl Dimethylsilyl Methyl Tismpribenz M written by David Alexander Vaccaro and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023 with categories.
Lastly, the ability of the [TismPriBenz]Zn halide series to form ion pair complexes was investigated. [TismPriBenz]ZnI can react with ZnI2 to afford {[TismPriBenz]Zn}2[Zn3I8], which contains the novel zinc halide species [Zn3I8]2−. Additionally, all of the [TismPriBenz]ZnX (X = Cl, Br, I) complexes are able to react with excess ZnX2 in THF to give the series {[TismPriBenz]Zn}[Zn(THF)X3].
Synthesis Structures And Characterization Of Coordination Compounds With The Transition Metals Ni Ii Cu Ii Mn Ii Cr Iii Fe Iii Using Ligands Based On Iminodiacetic Acid And N Heterocycles
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Author : Maria Paula Juanico
language : en
Publisher: Cuvillier Verlag
Release Date : 2003
Synthesis Structures And Characterization Of Coordination Compounds With The Transition Metals Ni Ii Cu Ii Mn Ii Cr Iii Fe Iii Using Ligands Based On Iminodiacetic Acid And N Heterocycles written by Maria Paula Juanico and has been published by Cuvillier Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
Studies Of Low Valent Main Group And Transition Metal Complexes Supported By Nitrogen Based Ligands
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Author : Audra Faye Lugo
language : en
Publisher:
Release Date : 2009
Studies Of Low Valent Main Group And Transition Metal Complexes Supported By Nitrogen Based Ligands written by Audra Faye Lugo and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Chelates categories.
Synthesis Of Group 9 And 10 Metal Complexes Supported By Chelating Nitrogen Based Ligands And Mechanistic Studies Of Their Role In Catalytic Transformations
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Author : Jennifer Lauren McBee
language : en
Publisher:
Release Date : 2009
Synthesis Of Group 9 And 10 Metal Complexes Supported By Chelating Nitrogen Based Ligands And Mechanistic Studies Of Their Role In Catalytic Transformations written by Jennifer Lauren McBee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
Synthesis And Characterization Of New Schiff Bases Ligands With Their Transition And Actinide Metals
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Author : Sali Nabeel Hanna Jabrou
language : en
Publisher:
Release Date : 2019
Synthesis And Characterization Of New Schiff Bases Ligands With Their Transition And Actinide Metals written by Sali Nabeel Hanna Jabrou and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Actinide elements categories.
Over recent years a great deal of interest has developed in new transition metal complexes of Schiff base ligand. The preparation of new ligand is the most important step in the development of metal complexes that exhibit unique properties and novel reactivity. The electron donor and electron acceptor properties of the ligand, the structural function groups and the position of the ligand in the coordination sphere, together with the reactivity of coordination compounds may be the factor for different studies. The synthesis and structural investigations of Schiff bases and their metal complexes are a considerable center of attention because of their potentially beneficial pharmacological properties and a wide variation in their mode of bonding. Metal coordination complexes have a wide variety of technological and industrial application, ranging from catalysis to anticancer drugs. In these compounds the metal atom itself may have a number of roles, based on its coordination geometry, oxidation state, and magnetic electronic and photochemical behaviors. This study presents the synthesis, characterization, and structural studies of different series of Copper and Uranium complexes of salicylaldehyde Schiff base derivatives with various organic amine compounds. The Schiff bases act as neutral and bidentate ligands, which can attach the metal through the azomethine nitrogen and furfural oxygens. These Schiff bases are prepared by iii reacting salicylaldehyde with various organic amines. In the case of most complexation reactions, highly colored precipitates were formed immediately. The complexes were found to have composition ML2 and M2L2, where M is the metal and L the organic ligand. This implies "mononuclear" structures with one metal + 2 ligands, and "binuclear" where the ligands hold two metal atoms in close proximity. The interesting molecular and crystal structural features of the Schiff base ligand called E-2-((benzo[d]thiazol-2-ylimino)methyl)phenol and its Cu(II) complex are presented in Chapter 2. Further investigations on the coordination chemistry of the Schiff base ligands are made by reacting these ligands with copper and uranium, described in Chapter 3. Another series of dicopper(II) complexes and diuranium complex of the Schiff base ligands, containing azomethine nitrogen and furfural oxygen donor group are investigated to evaluate the role of alkoxo bridge on the structures. Making the compounds with two uranium atoms leads to very high molecular weight, as a path to the highest molecular weight liquid crystal. This lays the pathway to future work for making those crystals. These dinuclear complexes are presented in chapter 4. The objective of the present study is to investigate the coordination chemistry of these ligands with Copper and Uranium. For the ligands this was done by a combination of nuclear magnetic resonance spectroscopy, infrared spectroscopy, ultraviolet-visible spectroscopy and single X-ray crystallography. The metal complexes were analyzed by the same techniques, except that in the case of uranium, all efforts to obtain single crystal for X-ray crystallography proved unsuccessful, so the molecular structure had to be ascertained from the other techniques.
The Synthesis And Structural Characterization Of Some Multiple Donor Ligands And Their Metal Complexes
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Author : Steven P. Rowley
language : en
Publisher:
Release Date : 1990
The Synthesis And Structural Characterization Of Some Multiple Donor Ligands And Their Metal Complexes written by Steven P. Rowley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.
