Abd El-Haleem M. Hussein is carrying out his research work at Al-Azhar University at Assiut, Egypt. He belongs to the Department of Chemistry and Faculty of Science. He has extended his valuable service in field of Organometallic Chemistry, Medicinal Chemistry, Organic Chemistry for several years and has been a recipient of many award and grants. His international experience includes various programs, contributions and participation in different countries for diverse fields of study. His research interests reflect in his wide range of publications in various national and international journals.