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Synthesis And Characterization Of Transition Metal Complexes With Bulky Tin Ligands For Application In Small Molecule Activation
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Book Synopsis Synthesis and Characterization of Transition Metal Complexes with Bulky Tin Ligands for Application in Small Molecule Activation by : Veeranna Yempally
Download or read book Synthesis and Characterization of Transition Metal Complexes with Bulky Tin Ligands for Application in Small Molecule Activation written by Veeranna Yempally and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The role of bulky tin ligands in the stabilization of transition metal complexes with electronic unsaturation has been studied to understand the mode of binding of small molecules at an unsaturated metal center. We were able to isolate electronically unsaturated Pt-Sn bimetallic complexes effective in the reversible activation of small molecules including CO, H2, C2H4, and NH3 at room temperature. We have examined the effect of the modification of ligands in Pt-Sn bimetallic complexes for the activation of small molecules and have observed that the Pt(SnBut3)2(CNBut)2 bimetallic complex reversibly activates hydrogen at room temperature both in the solid state and in solution. Similarly, we have also prepared bimetallic Pt-Sn complexes with an NHC carbine ligand which were also shown to activate hydrogen and alkenes reversibly. A bimetallic Fe-Sn cluster complex, Fe2 ([mu]-SnBut2)2(CO)8, was synthesized from the reaction of But3SnH with the Fe2(CO)9 and shown to be selective at activating the benzylic C-H bond of alkylaromatic solvent molecules. The new complexes containing tin have been characterized spectroscopically to gain an insight into the reaction mechanism involved in small molecule activation.
Book Synopsis The Synthesis and Structural Characterization of Main Group and Transition Metal Complexes Supported by Nitrogen Based Ligands by :
Download or read book The Synthesis and Structural Characterization of Main Group and Transition Metal Complexes Supported by Nitrogen Based Ligands written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis On Being Well-coordinated: A Half-century Of Research On Transition Metal Complexes by : John L Burmeister
Download or read book On Being Well-coordinated: A Half-century Of Research On Transition Metal Complexes written by John L Burmeister and published by World Scientific. This book was released on 2003-10-14 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Synthesis, Characterization, and Reactivity of Transition Metal Complexes Containing Multi-donor Ligands by : John C. Linehan
Download or read book Synthesis, Characterization, and Reactivity of Transition Metal Complexes Containing Multi-donor Ligands written by John C. Linehan and published by . This book was released on 1986 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of Transition Metal Complexes by : Milan M. Milutinović
Download or read book Synthesis and Characterization of Transition Metal Complexes written by Milan M. Milutinović and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transition metals and their complexes have an important impact on chemistry and are found in many application in life in general. Ruthenium and rhodium are two members of noble metals and proved to be suitable for anticancer activity. With the aim of changing the coordination environment in ruthenium and rhodium complexes, this thesis presents a series of Ru(II) polypyridyl and Rh(III) pincer-type complexes. All new Ru(II) and Rh(III) complexes were characterized by NMR spectroscopy, ESI-MS spectrometry and UV-Vis spectrophotometry . For some of the complexes a single crystal X-ray crystallography was performed. The substitution reactions of Ru(II) and Rh(III) complexes with mononucleotides, oligonucleotides and amino acids were studied quantitatively by UV-Vis spectroscopy. Measurements of the activation enthalpies and entropies for all synthesized complexes are supporting an associative mechanism for the substitution process. NMR spectroscopy studies were performed on some Ru(II) complexes where after the hydrolyses of the metal-Cl bond the complexes are capable to interact with guanine derivatives forming monofunctional adducts via N7 atom. The interactions of Ru(II) and Rh(III) complexes with fully complementary 15-mer and 22-mer duplexes of DNA and fully complementary 13-mer duplexes of RNA were studied by UV-Vis spectroscopy. The interactions of ruthenium(II) and rhodium(III) complexes with calf thymus and herring testes DNA were examined by absorption using UV-Vis spectroscopy, fluorescence emission spectral studies by ethidium bromide displacement studies and viscosity measurements. ; eng
Book Synopsis Transition Metal Compounds by : Sajjad Haider
Download or read book Transition Metal Compounds written by Sajjad Haider and published by BoD – Books on Demand. This book was released on 2021-06-09 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores synthesis, structural changes, properties, and potential applications of transition metal (TM) compounds. Over three sections, chapters cover such topics as the synthesis of pentoxide vanadium (V2O5), the effect of TM compounds on structural, dielectric properties and high-temperature superconductors, and TM-doped nanocrystals (NCs).
Book Synopsis Preparation, Characterisation and Reactivity of Low Oxidation State d-Block Metal Complexes Stabilised by Extremely Bulky Amide Ligands by : Jamie Hicks
Download or read book Preparation, Characterisation and Reactivity of Low Oxidation State d-Block Metal Complexes Stabilised by Extremely Bulky Amide Ligands written by Jamie Hicks and published by Springer. This book was released on 2016-10-24 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes the synthesis and characterization of numerous metal-metal bonded complexes that are stabilized by extremely bulky amide ligands. It provides a comprehensive overview of the field, including discussions on groundbreaking complexes and reactions, before presenting in detail, exciting new findings from the PhD studies. The thesis appeals to researchers, professors and chemistry undergraduates with an interest in inorganic and/or organometallic chemistry.
Book Synopsis Linear Two-coordinate Transition Metal Complexes − Synthesis, Characterization, Spectroscopy, Magnetism and Reactivity by : Chun-Yi Lin
Download or read book Linear Two-coordinate Transition Metal Complexes − Synthesis, Characterization, Spectroscopy, Magnetism and Reactivity written by Chun-Yi Lin and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation primarily focuses on the synthesis, characterization and reactivity studies of a series of linear two-coordinate, late transition metal complexes. Except Chapter 1, all the chapters were published as peer-reviewed articles in academic journals. Chapter 1 consists of two parts: the first part provides a brief introduction and review on the current state of the field for two-coordinate, open-shell transition metal complexes. Chapter 2 details the synthesis, spectroscopic characterization of three strictly linearly coordinated Fe, Co and Ni complexes of formula M{N(SiMee3)Dipp}2. It was found from dispersion-corrected DFT calculations that attractive dispersion forces played an important role in stabilizing these species with unusual geometries. SQUID magnetic measurement showed that both Fe{N(SiMe3)Dipp}2 and Co{N(SiMe3)Dipp}2 have high magnetic moments compared to their spin-only value, which is due to the unquenched orbital angular momentum (OAM) contribution. Several collaborating efforts that resulted in a number of different publications are also included. Slow magnetic relaxation studies on Fe{N(SiMe3)Dipp}2 revealed a spin reversal barrier (U[subscript eff]) of 181 cm−1, a second highest value to date (June 2017) for a mononuclear transition metal complex. 57Fe Mößbauer spectroscopy showed a record high internal field of 162 T created by the unquenched OAM, which is the highest internal field reported so far for any Fe containing compound. Chapter 3 gives details of the reduction of M{N(SiMe3)Dipp}2 (M = Fe, Co, Ni). It was found that these species can be reduced to their +1 oxidation state and at the same time, remain two-coordinate at the metal center. These complexes, with formula of [K(18-crown-6)][M{N(SiMe3)Dipp}2], formed a rare series of the two-coordinate M(I) complexes. SQUID magnetic measurement showed that Fe and Co species had a high magnetic moment compared to their spin-only value, which is again due to the unquenched orbital angular momentum. In a similar fashion, chapter 4 reports the reduction of the first two-coordinate transition metal complexes, Mn{C(SiMe3)3}2, which was originally reported by Eaborn and coworkers in 1985. Mn{C(SiMe3)3}2 was reduced with KC8 in the presence of two different alkali metal ion complexing agents, 18-crown-6 and 15-crown-5. It was found that although the anion remained two-coordinate, the geometries differ due to the shallow potential well for the C−Mn−C coordination. In addition, although they have near-linear manganese coordination but the orbital magnetism is almost completely quenched as a result of 4s−3d[subscript z]2 orbital mixing which affords a non-degenerate ground state. Chapter 5 presents a serendipitous finding during our course of investigating the magnetic properties of three-coordinate transition metal complexes, M{N(SiMe3)Dipp}2(L) (M = Fe, Co, Ni; L = Lewis base), we found that the complexation of the Lewis bases are reversible. Using electronic and NMR spectroscopy, we were able to determine the binding constants of THF, THT (tetrahydrothiophene), pyridine, DMAP (4-dimethylaminopyridine), PMe3, PCy3 and IMes (1,3-bis(1,3,5-trimethylphenyl)imidazol-2-ylidene) to M{N(SiMe3)Dipp}2 and the binding strengths was found to be in the order of DMAP > pyridine > PMe3 > PCy3 ≈ IMes > THF > THT and those of the respective metals was in the order of Fe > Co > Ni. Finally, Chapter 6 is a Review that stems from our interest in two-coordinate transition metal complexes of +1 oxidation state. In particular, although Ni(I) complexes are far less numerous than complexes of its neighboring oxidation states (Ni(0) and Ni(II)), they have many applications that include small molecule activation, catalysis and magnetism.
Book Synopsis The Synthesis and Characterization of Highly Electron Deficient Transition Metal Complexes by : Brendan Dermot Murray
Download or read book The Synthesis and Characterization of Highly Electron Deficient Transition Metal Complexes written by Brendan Dermot Murray and published by . This book was released on 1984 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transition Metal Complexes of M-terphenyl Ligands by : Toby James Blundell
Download or read book Transition Metal Complexes of M-terphenyl Ligands written by Toby James Blundell and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of Transition Metal Complexes Containing Oxazoline and Pyrazole Ligands by : Daniel P. Lisbon
Download or read book Synthesis and Characterization of Transition Metal Complexes Containing Oxazoline and Pyrazole Ligands written by Daniel P. Lisbon and published by . This book was released on 1996 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of Helical Ligand Transition Metal Complexes by : Andrew Fessak
Download or read book Synthesis and Characterization of Helical Ligand Transition Metal Complexes written by Andrew Fessak and published by . This book was released on 1995 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of Ligands and Transition Metal Complexes Containing M-terphenyl Scaffolds by :
Download or read book Synthesis and Characterization of Ligands and Transition Metal Complexes Containing M-terphenyl Scaffolds written by and published by . This book was released on 2007 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of Transition Metal Complexes of the Ligand DDDT−2, 5,6-Dihydro-l,4-dithiin-2,3-dithiolate by : Jane Alena Hanna Welch
Download or read book Synthesis and Characterization of Transition Metal Complexes of the Ligand DDDT−2, 5,6-Dihydro-l,4-dithiin-2,3-dithiolate written by Jane Alena Hanna Welch and published by . This book was released on 1989 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transition Metals in the Synthesis of Complex Organic Molecules by : Louis S. Hegedus
Download or read book Transition Metals in the Synthesis of Complex Organic Molecules written by Louis S. Hegedus and published by . This book was released on 2010 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third edition of Transition Metals in the Synthesis of Complex Organic Molecules is a comprehensive revision and significant expansion of the second edition. The clear and systematic approach to the formation, manipulation, and reactivity of organometallic complexes has been maintained. The book is divided into 10 chapters starting with general formalisms, electron counting, and basic principles of organometallic reaction mechanisms. The organic chemistry of transition metals is then presented by class of metal complex, with many examples of applications in the synthesis of complex natural products and pharmaceuticals. The book is ideal for advanced undergraduate and graduate students as well as all practicing synthetic organic chemists. It is written for organic chemists and offers an easy entry into the field of organotransition metal chemistry without requiring a background in inorganic chemistry.
Book Synopsis Bio-inspired First-row Transition Metal Complexes for Small Molecule Activation by : Yun Ji Park
Download or read book Bio-inspired First-row Transition Metal Complexes for Small Molecule Activation written by Yun Ji Park and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Characterization, and Reactivity of Transition Metal Complexes Supported by Heteropolydentate Ligation by : Adam Ruddy
Download or read book Synthesis, Characterization, and Reactivity of Transition Metal Complexes Supported by Heteropolydentate Ligation written by Adam Ruddy and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
