This book has its origins in a resolution passed by the Economic and Social Council of the United Nations in July 1975 requesting the Secretary-General to prepare a 10 to 15 year evaluation of the prospects for copper. The investigation was carried out by the Centre for Natural Resources, Energy and Transport, with the help of consultants, and the results summarized in a report submitted to the Committee on Natural Re- sources, a subsidiary body of the Economic and Social Council, in May 1977. This book presents the findings of that investigation in greater detail, draws out the impli- cations of those findings more fully, and describes the methodology employed more completely than was possible in the earlier report. It also incorporates the results of additional work carried out by the authors since the spring of 1977 so as to take into account recent developments as well as comments received from the participants at the meeting of the Committee on Natural Resources where the summary paper was re- viewed. Although all three authors are collectively, and individually, responsible for the whole book, Mr. Wolfgang Gluschke assumes a special responsibility for Chapters IV, V and VI, Mr. Joseph F. Shaw for Chapters I, II, and VIII, and Mr. Bension Varon for Chapters III and VII. The work on the book was undertaken under the general supervision and guidance of Mr. Varon, then Assistant Director ofthe United Nations Centre for Natural Resources, Energy and Transport.
This thesis describes the first and long-sought successful synthesis of a new pyrazole-expanded porphyrin, a higher analog of porphyrin. This "Siamese-Twin Porphyrin" provides two conjoined porphyrin-like coordination spheres, thus being able to accommodate two metal ions within the same ligand. In her thesis, Lina Blusch not only explains the challenging synthesis and characterization of the ligand system, but also its application to the synthesis of homo- and hetero-bimetallic Ni and Cu complexes. She observes interesting metal-metal-interactions in the complexes, that lead to a non-innocent multistep redox chemistry. The ligand system and its complexes show an intriguing twisted geometry, giving rise to helical chirality and other fascinating properties. This study explores the first steps and opens up a new chemistry of expanded porphyrins with the potential to biomimetic applications.
"To the man who loves art for its own sake," remarked Sherlock Holmes, tossing aside the advertisement sheet of the Daily Telegraph, "it is frequently in its least important and lowliest manifestations that the keenest pleasure is to be derived. It is pleasant to me to observe, Watson, that you have so far grasped this truth that in these little records of our cases which you have been good enough to draw up, and, I am bound to say, occasionally to embellish, you have given prominence not so much to the many causes celebres and sensational trials in which I have figured but rather to those incidents which may have been trivial in themselves, but which have given room for those faculties of deduction and of logical synthesis which I have made my special province.""
Discover Metals Articles
Discover Metals Books