Studies of Transition Metal Complexes Using a New Unsymmetric Multidentate Chelate Ligand

Studies of Transition Metal Complexes Using a New Unsymmetric Multidentate Chelate Ligand PDF Author: Satcher, Jr. (Joe Harold)
Publisher:
ISBN:
Category :
Languages : en
Pages : 622

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Studies of Transition Metal Complexes Using a New Unsymmetric Multidentate Chelate Ligand

Studies of Transition Metal Complexes Using a New Unsymmetric Multidentate Chelate Ligand PDF Author: Satcher, Jr. (Joe Harold)
Publisher:
ISBN:
Category :
Languages : en
Pages : 622

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On Being Well-coordinated: A Half-century Of Research On Transition Metal Complexes

On Being Well-coordinated: A Half-century Of Research On Transition Metal Complexes PDF Author: John L Burmeister
Publisher: World Scientific
ISBN: 9814488003
Category : Science
Languages : en
Pages : 654

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This invaluable book distils the research accomplishments of Professor Fred Basolo during the five decades when he served as a world leader in the modern renaissance of inorganic chemistry. Its primary focus is on the very important area of chemistry known as coordination chemistry.Most of the elements in the periodic table are metals, and most of the chemistry of metals involves coordination chemistry. This is the case in the currently significant areas of research, including organometallic homogenous catalysis, biological reactions of metalloproteins, and even the solid state extended structures of new materials. In these systems, the metals are of primary importance because they are the sites of ligand substitution or redox reactions. In the solid materials, the coordination number of the metal and its stereochemistry are of major importance.Some fifty years of research on transition metal complexes carried out in the laboratory of Professor Basolo at Northwestern University is recorded here as selected scientific publications. The book is divided into three different major research areas, each dealing with some aspect of coordination chemistry. In each case, introductory remarks are presented which indicate what prompted the research projects and what the major accomplishments were. Although the research was of the academic, curiosity-driven type, some aspects have proven to be useful to others involved in projects that were much more applied in nature.

Studies of the Coordination Number of Transition Metal Ions in Complexes of Multidentate -pyridyl Ligands

Studies of the Coordination Number of Transition Metal Ions in Complexes of Multidentate -pyridyl Ligands PDF Author: Daniel Patrick Madden
Publisher:
ISBN:
Category :
Languages : en
Pages :

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The Synthesis and Structural Characterization of Main Group and Transition Metal Complexes Supported by Nitrogen Based Ligands

The Synthesis and Structural Characterization of Main Group and Transition Metal Complexes Supported by Nitrogen Based Ligands PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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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.

Transition Metal Complexes with P,N-Ligands and Silylenes: Synthesis and Catalytic Studies

Transition Metal Complexes with P,N-Ligands and Silylenes: Synthesis and Catalytic Studies PDF Author: Eva Neumann
Publisher: Cuvillier Verlag
ISBN: 3736918011
Category : Science
Languages : en
Pages : 244

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The term ligand [latin, ligare = bind] has its origin in coordination chemistry. It denotes a molecule that is able to bind to a metal center in most cases via one or several free electron pairs.[1] Ligands can be described by the number of electron-pair donor atoms as monodentate, bidentate, tridentate etc. ligands. The latter are also called chelating ligands [greek, chele = (crab’s) claw]. A typical classification of ligands is according to their electronic properties. They serve either as a σ-donating, σ-donating/π-accepting, or σ,π-donating/π-accepting ligands.[2] A more practical, often encountered approach is the classification of ligands according to their donor atoms, especially when larger molecules and molecules containing heteroatoms are regarded (compare 1.2). Coordination chemistry was already established in the 19th century. In 1893 Alfred Werner suggested an octahedral arrangement of ligands coordinated to a central metal ion for many compounds. This explained, for example, the appearance and reactivity of four different cobalt(III) complexes (Figure 1.1), when CoCl2 is dissolved in aqueous ammonia and then oxidized by air to the +3 oxidation state. The formulas of these complexes can be written as depicted in Figure 1.1. Werner’s work was rewarded with the Nobel prize in 1913.[3]

Electrochemical Studies on Transition Metal Complexes of Some N-heterocyclic Multidentate Ligands

Electrochemical Studies on Transition Metal Complexes of Some N-heterocyclic Multidentate Ligands PDF Author: Pham Dai Hung
Publisher:
ISBN:
Category : Organometallic compounds
Languages : en
Pages : 372

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Metal-Ligand Multiple Bonds

Metal-Ligand Multiple Bonds PDF Author: William A. Nugent
Publisher: Wiley-Interscience
ISBN:
Category : Science
Languages : en
Pages : 360

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Book Description
The only comprehensive one-volume text/reference on metal-ligand multiple bonds. Stresses the unified nature of the field and includes handy new tabulations of data. The flow within each subtopic is oxygen to nitrogen to carbon. Coverage is up-to-date--virtually every subtopic leads to interesting questions for future research. Presents information otherwise scattered through hundreds of publications.

New Transition Metal Complexes with Chelating Nitrogen Ligands

New Transition Metal Complexes with Chelating Nitrogen Ligands PDF Author: Sarah Al-Benna
Publisher:
ISBN:
Category :
Languages : en
Pages : 326

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Transition Metal Complexes of Neutral eta1-Carbon Ligands

Transition Metal Complexes of Neutral eta1-Carbon Ligands PDF Author: Remi Chauvin
Publisher: Springer
ISBN: 364204722X
Category : Science
Languages : en
Pages : 260

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Contents: Yves Canac and Remi Chauvin: Neutral eta1-carbon ligands: beyond carbon monoxide; Esteban P. Urriolabeitia: Ylide Ligands; Wolfgang Petz and Gernot Frenking: Carbodiphosphoranes and related ligands; Mareike C. Jahnke and F. Ekkehardt Hahn: Chemistry of N-Heterocyclic Carbene Ligands; Tsuyoshi Kato, Eddy Maerten, Antoine Baceiredo: Non-NHCs stable singlet carbene ligands; Victorio Cadierno, Sergio E. García-Garrido: All-Carbon-Substituted Allenylidene and Related Cumulenylidene Ligands; Victorio Cadierno, Sergio E. García-Garrido: Heteroatom-Conjugated Allenylidene and Related Cumulenylidene Ligands.

Transition Metal Complexes — Structures and Spectra

Transition Metal Complexes — Structures and Spectra PDF Author:
Publisher: Springer
ISBN: 354038751X
Category : Science
Languages : en
Pages : 211

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