Institution: | 1. Chemistry Department , Faculty of Science, Suez Canal University , Egypt;2. Chemistry Department , Faculty of Science, Suez Canal University , Egypt;3. Chemistry Department , Faculty of Science, Cairo University (Bani Suef Branch) , Egypt;4. Chemistry Department , Faculty of Science, Qatar University , P.O.Box 2713, Doha, State of Qatar;5. Chemistry Department , Faculty of Science, Tanta University , Egypt;6. Chemistry Department , Faculty of Education, Tanta University (Kafr El-Sheikh) , Egypt |