er Phil pps- n-Marburg cichardt-Marbur This book ments,data,illustrations,procedural details or other items may inadvertently be inaccurate. First Reprint 2004 Library of Congress Card No.:applied for A catalogue record for this book is available from the British Library. hBibotek lists this publication in the DeutscheNa n in u he Nationalbibliografie:detailed biblio- temet at http://dnb ddb.de ISBN3-527-30618-8 2003 WILEY-VCH Verlag GmbH Co.KGaA,Weinheim d on acid-t those of translation b uced in any form part of this book photo y other m ans r trans s.Reg considered unprotectedby law. s book even ch are not to g K Printing:Strauss Offsetdruck GmbH,Morlenbach Printed in the Federal Republic of Germany. Prof. Dr. Christian Reichardt Fachbereich Chemie der Philipps-Universita¨t Marburg Hans-Meerwein-Straße 35032 Marburg Germany e-mail: Reichardt-Marburg@t-online.de This book was carefully produced. Nevertheless, author and publisher do not warrant the infor￾mation contained therein to be free of errors. Readers are advised to keep in mind that state￾ments, data, illustrations, procedural details or other items may inadvertently be inaccurate. First Reprint 2004 Library of Congress Card No.: applied for A catalogue record for this book is available from the British Library. Bibliographic information published by Die Deutsche Bibliothek Die Deutsche Bibliothek lists this publication in the Deutsche Nationalbibliografie; detailed biblio￾graphic data is available in the Internet at http://dnb.ddb.de. ISBN 3-527-30618-8 6 2003 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Printed on acid-free paper. All rights reserved (including those of translation in other languages). No part of this book may be reproduced in any form – by photoprinting, microfilm, or any other means – nor transmitted or translated into machine language without written permission from the publishers. Registered names, trademarks, etc. used in this book, even when not specifically marked as such, are not to be considered unprotected by law. Composition: Asco Typesetters, Hong Kong. Printing: Strauss O¤setdruck GmbH, Mo¨rlenbach Bookbinding: J. Scha¨¤er GmbH & Co. KG, Gru¨nstadt Printed in the Federal Republic of Germany