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Phone 23672080 81 82 9899107446 9911310888 Fax 91 11 23677446. Shop at schandgroup com e mail info schandgroup com. AHMEDABAD 1st Floor Heritage Near Gujarat Vidhyapeeth Ashram Road Ahmedabad 380 014. Ph 27541965 27542369 ahmedabad schandgroup com, BENGALURU No 6 Ahuja Chambers 1st Cross Kumara Krupa Road Bengaluru 560 001. Ph 22268048 22354008 bangalore schandgroup com, BHOPAL Bajaj Tower Plot No 2 3 Lala Lajpat Rai Colony Raisen Road Bhopal 462 011. Ph 4274723 4209587 bhopal schandgroup com, CHANDIGARH S C O 2419 20 First Floor Sector 22 C Near Aroma Hotel Chandigarh 160 022. Ph 2725443 2725446 chandigarh schandgroup com, CHENNAI No 1 Whites Road Opposite Express Avenue Royapettah Chennai 600014. Ph 28410027 28410058 chennai schandgroup com, COIMBATORE 1790 Trichy Road LGB Colony Ramanathapuram Coimbatore 6410045.
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All rights reserved No part of this publication may be reproduced or copied in any material form including photo. copying or storing it in any medium in form of graphics electronic or mechanical means and whether or not. transient or incidental to some other use of this publication without written permission of the copyright owner. Any breach of this will entail legal action and prosecution without further notice. Jurisdiction All disputes with respect to this publication shall be subject to the jurisdiction of the Courts tribunals. and forums of New Delhi India only,First Edition 1980. Subsequent Editions and Reprints 1984 86 89 90 92 93 94 95 96 97 99 2000 2001 2002. Fourth Revised and Enlarged Multicolour Edition 2007 Reprints 2008 2009 Twice 2010 2011 Twice 2012. Fifth Revised Edition 2013,ISBN 81 219 2884 2 Code 04A 305. printed in india, By Rajendra Ravindra Printers Pvt Ltd 7361 Ram Nagar New Delhi 110 055. and published by S Chand Company Pvt Ltd 7361 Ram Nagar New Delhi 110 055. Undergraduate education in Chemistry seems to be in the midst of a major revolution in. India Sophisticated topics are increasingly being introduced into the college chemistry courses. In Organic Chemistry this trend is apparent in the new text books However it has been found. that a single text no matter how well written is not the best medium of presenting glimpses of. these sophisticated topics in addition to the necessary basic chemistry Spectroscopic techniques. viz UV IR and NMR are parts of the subjects which are regarded as essential and common to. all universities in degree and postgraduate courses Thus the publishers and the author felt the. need to write a separate book on these few techniques. I have gone through the whole of the text entitled Elementary Organic Absorption. Spectroscopy and find it an interesting reading The presentation of the subject in a lucid style. and simple language speaks of the hard work done by the author Sh Y R Sharma Post graduate. Department of Chemistry D A V College Jalandhar All explanations have well attended reasons. and are supplemented by appropriate data to bring home the point The inclusion of a large. number of worked examples and problems gives ample insight into the topics dealt with The. presentation of the subject matter is systematic and has made the book useful not only to students. but also to the workers engaged in organic synthesis in chemical and allied industries. Relatively newer techniques like C13 NMR spectroscopy have also been incorporated for the. benefit of students engaged in advanced studies Ample space devoted to the spectra of some. important solvents and their effects on the spectra merit special attention. I think that a long felt need for such a book by an Indian author has been fulfilled I wish. the book a great success,Chandigarh O P VIG,PREFACE TO THE FIFTH EDITION. The warm reception accorded to the fourth edition of Elementary Organic Spectroscopy. and its subsequent reprints has provided me a great deal of encouragement to present the fourth. edition of this book The subject matter presented in the book is sufficiently comprehensive and. the knowledge gained through it will make easy to identify an unknown compound The massive. scope of the subject dictates that all possible visual assistance be available to the students This. has been done by presenting a large number of spectral diagrams which have been added in. this edition Their interpretation serve to reinforce as well as assist the students in learning the. subject This attempt also helps the students to develop an intutive feel in using spectroscopy to. solve structural problems The main features of the present edition are. Multichoice questions are added in each chapter Some numerical problems are also. included where required, A chapter on Raman Spectroscopy has been added to meet the demand of a large.
number of students and teachers This technique forms a part of curriculum in most of. the universities and is dealt here in reasonable detail. Each chapter in the text is made more elaborate by induction of suitable material in. the form of applications numerical problems and explanation of new spectra Important. features for each technique Short Question with Answers Important problems Solved. form special features of the fifth edition, A number of problems have been given for the students to check their competence. Extensive summarises have been placed at the end of each shapter in order to review. each topic and highlight the main points, Every attempt is made to retain the comprehensive character of the text so as to ensure. that it continues to be one volume text for the students studying Organic Chemistry at. the Graduate and Postgraduate levels, A large number of new figures have been added in the text and all old figures have. been redesigned, In the ultra violet spectroscopy Polycyclic hydrocarbons and their spectra have been. discussed and proton nuclear magnetic resonance spectra of carbocations have been. I express my gratitude to my colleagues and friends who gave useful suggestions and took. keen interest in the revision of the book Thanks are due to my wife Mrs Saroj Sharma for the. secretarial assistance which she rendered during the revision of the book I will welcome suggestions. and healthy criticism of the subject matter and style for the further improvement of this book. Jalandhar Y R SHARMA,Ph 0181 2250012,e mail sharma yr1940 ymail com.
PREFACE TO THE FIRST EDITION, Methods based on relationships between structural features and physical properties are now. making an ever increasing contribution to organic chemistry not only in the elucidation of structure. but also in analytical and preoperative work The advantages of these methods are obvious. particularly in the study of tautomeric conformation and other equilibrium It is therefore not. surprising that the growing availability of physical methods has altered both the scope and pace. of organic chemistry Many recent successes in the determination of the structures of complex. natural products would have remained out of reach without them and their contribution in widening. our understanding of the reactivity of organic compounds can hardly be overestimated This. appreciation of the power of these methods prompted the author to venture on this elementary. introduction to the absorption techniques in organic spectroscopy. The book is written specifically for the undergraduate and it is hoped that it will render. valuable help to the postgraduate students as well The primary aim of this introductory book is. to provide a broad survey of the methods and special care is taken on the application of these. methods on selected representative molecules which will give clear insight into the subject. The text will be found to be graded from known to unknown and from very simple to difficult. problems The worked examples and unsolved problems with their answers in the index have. been very carefully selected to cover as many as possible of the important aspects of the subject. matter in the space available It is hoped that the book will be warmly received and will prove. beneficial to the students and the teachers alike, I simply fumble for words to express my heavy debt of gratitude towards Dr O P Vig. Professor and Head Department of Chemistry Punjab University Chandigarh who was gracious. enough for sparing time out of his busy schedule to go through the book and then writing. foreword to it It has of course enhanced its value and prestige. I express my gratitude to my colleagues and friends who by their encouragement interest. and advice helped me to write this book My sincere thanks are particularly due to Dr I R. Trehan Reader in Organic Chemistry Punjab University Chandigarh who took all the pains. in reading the whole of the manuscript and gave valuable suggestions Thanks are also due to. Sh G D Sharma Head of the Post Graduated Deptt of Chemistry D A V College Jalandhar. Dr K D Sharma lecturer in Chemistry Govt College Hoshiarpur and Sh M L Sehgal lecturer. in Chemistry D A V College Jalandhar for making valuable criticisms. I am grateful to Sh Shyam Lal Gupta Managing Director S Chand and Company Ltd. New Delhi and Sh S K Moudgil Branch Manager Jalandhar for the interest they took during. the preparation of the book, Finally I thanks my wife Mrs Saroj Sharma who inspired me during the preparation of the. text I will welcome any criticism of the subject matter and style for further improvement of this. new enterprise,Y R SHARMA,ACKNOWLEDGEMENT, I am extremely grateful to the authorities of Varian Associates Palo Alto California U S A. for their kind permission to reproduce Nuclear magnetic resonance spectra from their catalogues. Vol I and Vol II I am also thankful to the Department of Chemistry Punjab University Chandigarh. for the courtesy shown in scanning some of the spectra for reproduction in the text. Y R SHARMA,CHAPTER 1 INTRODUCTION,1 1 Electro magnetic radiations 1.
1 2 Units 3, 1 3 Electromagnetic Spectrum and Absorption of Radiations 5. Further Readings 8,Review Questions 8,Multiple Choice Questions 8. CHAPTER 2 ULTRA VIOLET AND VISIBLE SPECTROSCOPY,2 1 Introduction 11. 2 2 The Absorption Laws 12,2 3 Measurement of Absorption Intensity 16. 2 4 Instrumentation 16,2 5 Formation of Absorption Bands 18.
2 6 Theory of Electronic Spectroscopy 19,2 7 Types of Electronic Transitions 19. 2 8 Transition Probability 22,2 9 The Chromophore Concept 23. 2 10 Auxochrome 24,2 11 Absorption and Intensity shifts 25. 2 12 Types of Absorption bands 26,2 13 Solvent Effects 27. 2 14 Effect of Temperature and Solvent on the Fineness of Absorption Band 29. 2 15 Conjugated dienes 30, 2 16 Woodward fieser Rules for Calculating Absorption Maximum in Dienes 33.
elementary organic spectroscopy principles and chemical applications for b sc hons postgraduate students of all indian universities and competitive examinations s chand amp company pvt ltd an iso 9001 2008 company ram nagar new delhi 110055 y r sharma postgraduate department of chemistry d a v college jalandhar india

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