Synthesis of Thiourea and Guanidine Containing Cobalt (II), Rhodium (III), Platinum (II) Complexes, and Binding Studies of Their Second-sphere H-bonding Host-guest System PDF Download
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Author: Weihao Da
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Supramolecular chemistry has seen a burgeoning interest over the last few decades for the fascinating findings that lie beyond the molecule. Supramolecular chemistry can also offer a fresh interface with biological and materials science. My research project is focused on designing, synthesizing, and exploring the intrinsic properties of complexes based on cobalt, rhodium, and platinum. In each case, thiourea/guanidine derivatives are our ligands of choice to confer H-bonding sites for second-sphere coordination of guest molecules. Second-sphere H-bonding interactions with three different guest molecules were analyzed to obtain association constants (K[subscript a] values) from ~ 10[superscript 2] M[superscript-1] to ~10[superscript 4] M[superscript -1] via UV-vis titration studies. Five sets of single crystal X-Ray diffraction data of our novel complexes were also acquired, alongside the result of a thermochromism test of one of our cobalt complexes. Obtained interesting features include self-recognition and self-assembled structures. Overall, six novel thiourea/guanidine ligand-containing complexes – two for each of cobalt (II), rhodium (III) and platinum (II) - were synthesized. Through these dynamic H-bonding interactions, we see potential applications of our molecules across the fields of medicine, biology, agriculture, and more. Our Host-Guest studies prove that these complexes are able to bind with DNA nucleobase-like molecules via hydrogen bonding, meaning that anticancer assays of our platinum (II) and rhodium (III) thiourea/guanidine-containing compounds are promising avenues for future evaluation. Results of dilution studies show potential supramolecular oligomer structures formed in dynamic system. Finally, testing our compounds within the arena of organometallic catalysis for specific reactions is also promising work that lies ahead.
Author: Weihao Da
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Supramolecular chemistry has seen a burgeoning interest over the last few decades for the fascinating findings that lie beyond the molecule. Supramolecular chemistry can also offer a fresh interface with biological and materials science. My research project is focused on designing, synthesizing, and exploring the intrinsic properties of complexes based on cobalt, rhodium, and platinum. In each case, thiourea/guanidine derivatives are our ligands of choice to confer H-bonding sites for second-sphere coordination of guest molecules. Second-sphere H-bonding interactions with three different guest molecules were analyzed to obtain association constants (K[subscript a] values) from ~ 10[superscript 2] M[superscript-1] to ~10[superscript 4] M[superscript -1] via UV-vis titration studies. Five sets of single crystal X-Ray diffraction data of our novel complexes were also acquired, alongside the result of a thermochromism test of one of our cobalt complexes. Obtained interesting features include self-recognition and self-assembled structures. Overall, six novel thiourea/guanidine ligand-containing complexes – two for each of cobalt (II), rhodium (III) and platinum (II) - were synthesized. Through these dynamic H-bonding interactions, we see potential applications of our molecules across the fields of medicine, biology, agriculture, and more. Our Host-Guest studies prove that these complexes are able to bind with DNA nucleobase-like molecules via hydrogen bonding, meaning that anticancer assays of our platinum (II) and rhodium (III) thiourea/guanidine-containing compounds are promising avenues for future evaluation. Results of dilution studies show potential supramolecular oligomer structures formed in dynamic system. Finally, testing our compounds within the arena of organometallic catalysis for specific reactions is also promising work that lies ahead.
Author: Tsutomu Ishikawa
Publisher: John Wiley & Sons
ISBN: 9780470740866
Category : Science
Languages : en
Pages : 336
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Book Description
Guanidines, amidines and phosphazenes have been attracting attention in organic synthesis due to their potential functionality resulting from their extremely strong basicity. They are also promising catalysts because of their potential for easy molecular modification, possible recyclability, and reduced or zero toxicity. Importantly, these molecules can be derived as natural products – valuable as scientists move towards “sustainable chemistry”, where reagents and catalysts are derived from biomaterial sources. Superbases for Organic Synthesis is an essential guide to these important molecules for preparative organic synthesis. Topics covered include the following aspects: an introduction to organosuperbases physicochemical properties of organic superbases amidines and guanidines in organic synthesis phosphazene: preparation, reaction and catalytic role polymer-supported organosuperbases application of organosuperbases to total synthesis related organocatalysts: proton sponges and urea derivatives amidines and guanidines in natural products and medicines Superbases for Organic Synthesis is a comprehensive, authoritative and up-to-date guide to these important reagents for organic chemists, drug discovery researchers and those interested in the chemistry of natural products.
Author: Anne M. Coghill
Publisher: American Chemical Society
ISBN: 9780841239494
Category : Authorship
Languages : en
Pages : 0
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Book Description
In the time since the second edition of The ACS Style Guide was published, the rapid growth of electronic communication has dramatically changed the scientific, technical, and medical (STM) publication world. This dynamic mode of dissemination is enabling scientists, engineers, and medicalpractitioners all over the world to obtain and transmit information quickly and easily. An essential constant in this changing environment is the requirement that information remain accurate, clear, unambiguous, and ethically sound.This extensive revision of The ACS Style Guide thoroughly examines electronic tools now available to assist STM writers in preparing manuscripts and communicating with publishers. Valuable updates include discussions of markup languages, citation of electronic sources, online submission ofmanuscripts, and preparation of figures, tables, and structures. In keeping current with the changing environment, this edition also contains references to many resources on the internet.With this wealth of new information, The ACS Style Guide's Third Edition continues its long tradition of providing invaluable insight on ethics in scientific communication, the editorial process, copyright, conventions in chemistry, grammar, punctuation, spelling, and writing style for any STMauthor, reviewer, or editor. The Third Edition is the definitive source for all information needed to write, review, submit, and edit scholarly and scientific manuscripts.
Author: Florencio Zaragoza Dörwald
Publisher: John Wiley & Sons
ISBN: 3527604987
Category : Science
Languages : en
Pages : 389
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Book Description
Most syntheses in the chemical research laboratory fail and usually require several attempts before proceeding satisfactorily. Failed syntheses are not only discouraging and frustrating, but also cost a lot of time and money. Many failures may, however, be avoided by understanding the structure-reactivity relationship of organic compounds. This textbook highlights the competing processes and limitations of the most important reactions used in organic synthesis. By allowing chemists to quickly recognize potential problems this book will help to improve their efficiency and success-rate. A must for every graduate student but also for every chemist in industry and academia. Contents: 1 Organic Synthesis: General Remarks 2 Stereoelectronic Effects and Reactivity 3 The Stability of Organic Compounds 4 Aliphatic Nucleophilic Substitutions: Problematic Electrophiles 5 The Alkylation of Carbanions 6 The Alkylation of Heteroatoms 7 The Acylation of Heteroatoms 8 Palladium-Catalyzed C-C Bond Formation 9 Cyclizations 10 Monofunctionalization of Symmetric Difunctional Substrates
Author: Anthony E. Hughes
Publisher: Springer
ISBN: 9401775400
Category : Technology & Engineering
Languages : en
Pages : 429
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Book Description
This book covers a broad range of materials science that has been brought to bear on providing solutions to the challenges of developing self-healing and protective coatings for a range of metals. The book has a strong emphasis on characterisation techniques, particularly new techniques that are beginning to be used in the coatings area. It features many contributions written by experts from various industrial sectors which examine the needs of the sectors and the state of the art. The development of self-healing and protective coatings has been an expanding field in recent years and applies a lot of new knowledge gained from other fields as well as other areas of materials science to the development of coatings. It has borrowed from fields such as the food and pharmaceutical industries who have used, polymer techniques, sol-gel science and colloidosome technology for a range encapsulation techniques. It has also borrowed from fields like hydrogen storage such as from the development of hierarchical and other materials based on organic templating as “nanocontainers” for the delivery of inhibitors. In materials science, recent developments in high throughput and other characterisation techniques, such as those available from synchrotrons, are being increasing used for novel characterisation – one only needs to look at the application of these techniques in self healing polymers to gauge wealth of new information that has been gained from these techniques. This work is largely driven by the need to replace environmental pollutants and hazardous chemicals that represent risk to humans such as chromate inhibitors which are still used in some applications.
Author: Takahiko Akiyama
Publisher: John Wiley & Sons
ISBN: 1119736412
Category : Science
Languages : en
Pages : 798
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Book Description
Catalytic Asymmetric Synthesis Seminal text presenting detailed accounts of the most important catalytic asymmetric reactions known today This book covers the preparation of enantiomerically pure or enriched chemical compounds by use of chiral catalyst molecules. While reviewing the most important catalytic methods for asymmetric organic synthesis, this book highlights the most important and recent developments in catalytic asymmetric synthesis. Edited by two well-qualified experts, sample topics covered in the work include: Metal catalysis, organocatalysis, photoredox catalysis, enzyme catalysis C–H bond functionalization reactions Carbon–carbon bond formation reactions, carbon–halogen bond formation reactions, hydrogenations, polymerizations, flow reactions Axially chiral compounds Retaining the best of its predecessors but now thoroughly up to date with the important and recent developments in catalytic asymmetric synthesis, the 4th edition of Catalytic Asymmetric Synthesis serves as an excellent desktop reference and text for researchers and students, from upper-level undergraduates all the way to experienced professionals in industry or academia.
Author: Gérard Jaouen
Publisher: Springer Science & Business Media
ISBN: 3642131840
Category : Science
Languages : en
Pages : 305
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Book Description
Contents: Gérard Jaouen, Nils Metzler-Nolte : Introduction ; Stéphane GIBAUD and Gérard JAOUEN: Arsenic - based drugs: from Fowler’s solution to modern anticancer chemotherapy; Ana M. Pizarro, Abraha Habtemariam and Peter J. Sadler : Activation Mechanisms for Organometallic Anticancer Complexes; Angela Casini, Christian G. Hartinger, Alexey A. Nazarov, Paul J. Dyson : Organometallic antitumour agents with alternative modes of action; Elizabeth A. Hillard, Anne Vessières, Gerard Jaouen : Ferrocene functionalized endocrine modulators for the treatment of cancer; Megan Hogan and Matthias Tacke : Titanocenes – Cytotoxic and Anti-Angiogenic Chemotherapy Against Advanced Renal-Cell Cancer; Seann P. Mulcahy and Eric Meggers : Organometallics as Structural Scaffolds for Enzyme Inhibitor Design; Christophe Biot and Daniel Dive : Bioorganometallic Chemistry and Malaria; Nils Metzler-Nolte : Biomedical applications of organometal-peptide conjugates; Roger Alberto : Organometallic Radiopharmaceuticals; Brian E. Mann : Carbon Monoxide – an essential signaling molecule.
Author: Bruce A. Arndtsen
Publisher: Springer Nature
ISBN: 3030438511
Category : Science
Languages : en
Pages : 211
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Book Description
The series Topics in Current Chemistry Collections presents critical reviews from the journal Topics in Current Chemistry organized in topical volumes. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience.Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field.The chapter "Enamine/Transition Metal Combined Catalysis: Catalytic Transformations Involving Organometallic Electrophilic Intermediates" is available open access under a CC BY 4.0 License via link.springer.com.
Author: Vladimir S Kislik
Publisher: Elsevier
ISBN: 0444537783
Category : Science
Languages : en
Pages : 573
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Book Description
The main challenge in modern solvent extraction separation is that most techniques are mainly empirical, specific and particular for narrow fields of practice and require a large degree of experimentation. This concise and modern book provides a complete overview of both solvent extraction separation techniques and the novel and unified competitive complexation/solvation theory. This novel and unified technique presented in the book provides a key for a preliminary quantitative prediction of suitable extraction systems without experimentation, thus saving researchers time and resources. Analyzes and compares both classical and new competitive models and techniques Offers a novel and unified competitive complexation / solvation theory that permits researchers to standardize some parameters, which decreases the need for experimentation at R&D Presents examples of applications in multiple disciplines such as chemical, biochemical, radiochemical, pharmaceutical and analytical separation Written by an outstanding scientist who is prolific in the field of separation science
Author: Gulzhian I. Dzhardimalieva
Publisher: Springer
ISBN: 3319560247
Category : Technology & Engineering
Languages : en
Pages : 1036
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Book Description
This book deals with the chemistry of polymeric metal chelates. The main results and the production and chemical structure of polymers with chelate units as well as the specificity of metal complex binding of different structure are presented here. This book also reveals the transformations which components undergo in the course of chelation. Special attention is paid not only to synthetic but also to natural (including living) systems. The usage of polymeric metal chelates and their development are examined. The related research was performed for chelates with chain structure. This book is useful to researchers being active in synthesis and design of macromolecular metal chelates
