For the 6th edition of Cotton and Wilkinson's classic text, the authors co-opted their ex-PhD students, Murrillo and Bochmann, to assist with the rewriting. Unfortunately their influence appears to have been entirely negative, as the book is appreciably less useful and less readable than earlier editions. One of the strong points of the 5th edition, the extensive chapters at the back of the book surveying selected topics, have been done away with. They have been replaced by a lifeless chapter or two on catalysis, written without any real authority. Rather than buying this book, I strongly suggest tracking down an earlier edition.