An Ordering Concept On The Basis Of Alternative Principles In Chemistry

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An Ordering Concept on the Basis of Alternative Principles in Chemistry

Author : Paul Heimbach,Tamas Bartik
Publisher : Springer Science & Business Media
Page : 227 pages
File Size : 45,5 Mb
Release : 2012-12-06
Category : Science
ISBN : 9783642838064

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An Ordering Concept on the Basis of Alternative Principles in Chemistry by Paul Heimbach,Tamas Bartik Pdf

Considering aspects of symmetry rules in chemistry, one is faced with con tradictory terms as for example, "90 % concertedness" sometimes being used in literature. To accept conservation of orbital symmetry to be as controlled as inversion by alternative principles seems far more promising. The intention of this book is aimed at introducing a qualitative understanding of phase rela tions in electromagnetic interactions. Avoiding one-sided dogmatism we tried to demonstrate the importance of alternative principles as guidelines to the evolution of alternative order in chemical systems. Passing through the jungle of information it became extremly important to control again and again our insights into the ordering phenomena by experi ments under conditions as coherent as possible. We became more aware of the fact that chemistry - the science of "becoming" in complex systems - can not be understood by mechanistic details, i. e. THROUGHPUT-studies alone, because the mechanism is only true for the special system under inves tigation and does not offer a tool for the evolution of opposite order. We had to accept chemistry as a mediator between molecular physics and general epistemology. This quite unusual combination was directed by excel lent teachers and the realizations were made possible by enthusiastic, open minded coworkers (see references). The next target we will strive for on this journey will be to quantify the alternative principles, that means obtaining the order parameters of H. Haken (e. g. in asymmetric synthesis).

An Ordering Concept on the Basis of Alternative Principles in Chemistry

Author : Paul Heimbach,Tamas Bartik
Publisher : Springer
Page : 214 pages
File Size : 52,5 Mb
Release : 2011-12-16
Category : Science
ISBN : 3642838073

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An Ordering Concept on the Basis of Alternative Principles in Chemistry by Paul Heimbach,Tamas Bartik Pdf

Considering aspects of symmetry rules in chemistry, one is faced with con tradictory terms as for example, "90 % concertedness" sometimes being used in literature. To accept conservation of orbital symmetry to be as controlled as inversion by alternative principles seems far more promising. The intention of this book is aimed at introducing a qualitative understanding of phase rela tions in electromagnetic interactions. Avoiding one-sided dogmatism we tried to demonstrate the importance of alternative principles as guidelines to the evolution of alternative order in chemical systems. Passing through the jungle of information it became extremly important to control again and again our insights into the ordering phenomena by experi ments under conditions as coherent as possible. We became more aware of the fact that chemistry - the science of "becoming" in complex systems - can not be understood by mechanistic details, i. e. THROUGHPUT-studies alone, because the mechanism is only true for the special system under inves tigation and does not offer a tool for the evolution of opposite order. We had to accept chemistry as a mediator between molecular physics and general epistemology. This quite unusual combination was directed by excel lent teachers and the realizations were made possible by enthusiastic, open minded coworkers (see references). The next target we will strive for on this journey will be to quantify the alternative principles, that means obtaining the order parameters of H. Haken (e. g. in asymmetric synthesis).

Chirality

Author : Rudolf Janoschek
Publisher : Springer Science & Business Media
Page : 258 pages
File Size : 42,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9783642765698

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Chirality by Rudolf Janoschek Pdf

The phenomenon of chirality occurs in many disciplines of natural sciences, such as elementary particle physics, chemistry of molecules, biopolymers and crystals, pharmacology, biology (snails, winding plants), and medicine (handedness). Review articles are widely available for most of these fields and written for the respective experts. This book gives for the first time an interdisciplinary comprehensive treatment of chirality. Ten well-known scientists describe the present state of the art in different fields in introductory review articles without going into detail. Most importantly, the book is more than an accumulation of different chapters insofar as biomolecular homochirality is traced back to the chirality of elementary particles in atomic nuclei. The authors have attempted to present chemistry for physicists and physics for chemists, etc. Any scientist who is engaged in chirality may benefit from the present survey.

Bibliography of Agriculture

Author : Anonim
Publisher : Unknown
Page : 1120 pages
File Size : 51,7 Mb
Release : 1990
Category : Agriculture
ISBN : UIUC:30112102098123

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Bibliography of Agriculture by Anonim Pdf

Cumulative Book Index

Author : Anonim
Publisher : Unknown
Page : 2280 pages
File Size : 46,8 Mb
Release : 1990
Category : American literature
ISBN : UOM:39015058373815

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Cumulative Book Index by Anonim Pdf

A world list of books in the English language.

Management Principles of Sustainable Industrial Chemistry

Author : Genserik L. L. Reniers,Kenneth Sörensen,Karl Vrancken
Publisher : John Wiley & Sons
Page : 263 pages
File Size : 40,8 Mb
Release : 2013-03-20
Category : Technology & Engineering
ISBN : 9783527649501

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Management Principles of Sustainable Industrial Chemistry by Genserik L. L. Reniers,Kenneth Sörensen,Karl Vrancken Pdf

Approaching sustainability from the perspectives of engineering and multiple scientific disciplines, this book incorporates the concepts of intergenerational equity and ecological capabilities, while promoting scientific rigor for the analysis of sustainability and the use of appropriate metrics to determine the comparative merits of alternatives. The chapters are organized around the key non-technological themes of sustainable industrial chemistry and provide an overview of the managerial principles to enhance sustainability in the chemicals sector. The book strives to provide an intellectual forum and stimulus for defining the roles chemical engineers can play in achieving sustainable development. Suitable for industry and graduate education, this is the one-stop guide to greener, cleaner, economically viable and more efficient chemical industries.

Charge Sensitivity Approach to Electronic Structure and Chemical Reactivity

Author : Roman F. Nalewajski,Jacek Korchowiec
Publisher : World Scientific
Page : 316 pages
File Size : 41,9 Mb
Release : 1997
Category : Science
ISBN : 9810222459

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Charge Sensitivity Approach to Electronic Structure and Chemical Reactivity by Roman F. Nalewajski,Jacek Korchowiec Pdf

Charge Sensitivity Analysis (CSA) represents a linear response treatment of molecular systems, based upon the chemical potential and hardness/softness concepts established within density functional theory (DFT). Recently, it has been shown to provide an attractive framework leading to novel approaches to chemical reactivity of open systems. The monograph presents the conceptual and methodological basis of the CSA covering its DFT roots, alternative resolutions and representations, sensitivities of closed and open atomic and molecular systems, charge stability criteria and relaxational effects due to the system environment, and alternative collective modes of charge redistribution. The CSA interaction energy in donor-acceptor systems is investigated in the second-order approximation. In particular, the relaxational contributions to the chemical potential, hardness and softness quantities are examined and their physical implications are summarized. The charge sensitivity concepts for reactive systems include: one- and two-reactant reactivity criteria, mapping relations between equilibrium displacements in the electron population and nuclear position spaces, the intersecting state model of charge transfer processes, intermediate hardness decoupling modes and the minimum energy coordinates, all defined in the electron population space. The conceptual developments are illustrated using recent qualitative and quantitative results on selected molecules, catalytic clusters and chemisorption systems. The CSA description is shown to connect directly to intuitive concepts and rules of chemistry, e.g., those related to interactions between hard/soft acids and bases.

Charge Sensitivity Approach to Electronic Structure and Chemical Reactivity

Author : Roman F Nalewajski,Jacek Korchowiec
Publisher : World Scientific
Page : 312 pages
File Size : 42,5 Mb
Release : 1997-01-03
Category : Science
ISBN : 9789814500487

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Charge Sensitivity Approach to Electronic Structure and Chemical Reactivity by Roman F Nalewajski,Jacek Korchowiec Pdf

Charge Sensitivity Analysis (CSA) represents a linear response treatment of molecular systems, based upon the chemical potential and hardness/softness concepts established within density functional theory (DFT). Recently, it has been shown to provide an attractive framework leading to novel approaches to chemical reactivity of open systems. The monograph presents the conceptual and methodological basis of the CSA covering its DFT roots, alternative resolutions and representations, sensitivities of closed and open atomic and molecular systems, charge stability criteria and relaxational effects due to the system environment, and alternative collective modes of charge redistribution. The CSA interaction energy in donor–acceptor systems is investigated in the second-order approximation. In particular, the relaxational contributions to the chemical potential, hardness and softness quantities are examined and their physical implications are summarized. The charge sensitivity concepts for reactive systems include: one- and two-reactant reactivity criteria, mapping relations between equilibrium displacements in the electron population and nuclear position spaces, the intersecting state model of charge transfer processes, intermediate hardness decoupling modes and the minimum energy coordinates, all defined in the electron population space. The conceptual developments are illustrated using recent qualitative and quantitative results on selected molecules, catalytic clusters and chemisorption systems. The CSA description is shown to connect directly to intuitive concepts and rules of chemistry, e.g., those related to interactions between hard/soft acids and bases. Contents:Introductory SurveyAtomic Charge SensitivitiesConcepts and Relations of Molecular Charge Sensitivity AnalysisConcepts for Chemical ReactivityIllustrative Applications to Model Catalytic SystemsCharge Sensitivities in Kohn-Sham TheoryElements of the Orbitally-Resolved CSA Readership: Researchers and graduate students in theoretical and physical chemistry, particularly those studying and modelling elementary processes. keywords:Catalytic/Chemisorption Reaction Meachanisms;Charge-Transfer/Polarization Stages of Chemical Reactions;Charge Sensitivity Criteria of Reactivity;Chemical Reactivity Theory;Chemical Potential/Electronegativity Equalization;Collective Modes for Electronic Structure;Density Functional Theory of Chemical Reactivity;Fukui Functions of Molecular and Reactive Systems;Hardness/Softness Descriptors of Reactivity;Thermodynamic-like Approach to Molecules and Reactants;Molecules and Their Subsystems;Reactivity Concepts and Indices

Patent and Trademark Office Notices

Author : United States. Patent and Trademark Office
Publisher : Unknown
Page : 1022 pages
File Size : 46,5 Mb
Release : 1988
Category : Patents
ISBN : STANFORD:36105131573292

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Patent and Trademark Office Notices by United States. Patent and Trademark Office Pdf

Official Gazette of the United States Patent and Trademark Office

Author : United States. Patent and Trademark Office
Publisher : Unknown
Page : 1178 pages
File Size : 41,7 Mb
Release : 1988
Category : Patents
ISBN : WISC:89050409242

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Official Gazette of the United States Patent and Trademark Office by United States. Patent and Trademark Office Pdf

Chemical Misconceptions

Author : Keith Taber
Publisher : Royal Society of Chemistry
Page : 204 pages
File Size : 45,6 Mb
Release : 2002
Category : Education
ISBN : 0854043861

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Chemical Misconceptions by Keith Taber Pdf

Part one includes information on some of the key alternative conceptions that have been uncovered by research and general ideas for helping students with the development of scientific conceptions.

Concepts and Methods in Modern Theoretical Chemistry

Author : Swapan Kumar Ghosh,Pratim Kumar Chattaraj
Publisher : CRC Press
Page : 489 pages
File Size : 48,8 Mb
Release : 2016-04-19
Category : Science
ISBN : 9781466505315

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Concepts and Methods in Modern Theoretical Chemistry by Swapan Kumar Ghosh,Pratim Kumar Chattaraj Pdf

Concepts and Methods in Modern Theoretical Chemistry: Electronic Structure and Reactivity, the first book in a two-volume set, focuses on the structure and reactivity of systems and phenomena. A new addition to the series Atoms, Molecules, and Clusters, this book offers chapters written by experts in their fields. It enables readers to learn how co

Chemistry from First Principles

Author : Jan C. A. Boeyens
Publisher : Springer Science & Business Media
Page : 321 pages
File Size : 47,8 Mb
Release : 2008-09-18
Category : Science
ISBN : 9781402085468

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Chemistry from First Principles by Jan C. A. Boeyens Pdf

"Chemistry from First Principles" examines the appearance of matter in its most primitive form. It features the empirical rules of chemical affinity that regulate the synthesis and properties of molecular matter, analyzes the compatibility of the theories of chemistry with the quantum and relativity theories of physics, formulates a consistent theory based on clear physical pictures and manageable mathematics to account for chemical concepts such as the structure and stability of atoms and molecules. This text also explains the self-similarity between space-time, nuclear structure, covalent assembly, biological growth, planetary systems, and galactic conformation.

Extraterrestrials

Author : Ben Zuckerman,Michael H. Hart
Publisher : CUP Archive
Page : 260 pages
File Size : 50,6 Mb
Release : 1995-09-28
Category : Nature
ISBN : 0521448034

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Extraterrestrials by Ben Zuckerman,Michael H. Hart Pdf

Experts critically examine the belief that other intelligent life exists in our galaxy.