الفهرس 
acknowledgmentOnly 14 pages are availabe for public view
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Abstract
I would like to express my deepest appreciation to Dr. Ahmed El-Toukhy and Dr. Mohamed A. El-Sayed, Assistant Professors of Inorganic chemistry and Dr. Mohga M.S. Tawfik, Lecturer of Inorganic Chemistry., Faculty of Science, Alex. University. For suggesting, planning, supervising and following closely this research problem I would also like to thank Dr. Kay D. Onan and Mr. Walied Shomaly for their assistance in making crystal structure at Northeastern University, Boston. U.S.A I am grateful for the assistance, the support and the encouragement given from Prof. Dr. M.S. Masoud, Professor of Inorganic Chemistry, Faculty of Science, Alexandria University My thanks are extended to Dr. M.A. Makhyoun Professor of Inorganic chemistry for reading the manuscript of this thesis My sincere thanks are due to my parents and my hasband, Mr. Hammed A. Maksoud for their most appreciated encouragement and help Finally, I wish to thank Alexandria University for kindly providing all the facilities during this work and the many others in achieving my objective.