Synthesis, structure and reactivity of well defined stannoxanes, indoxanes and thalloxanes [Elektronische Ressource] / S. Usman Ahmad

InauguralDissertation towards the academic degree Doctor rerum naturalium (Dr. rer. nat.) Synthesis, structure and reactivity of well defined Stannoxanes, Indoxanes and Thalloxanes Submitted to the Department of Biology, Chemistry and Pharmacy, Freie Universtät Berlin S. Usman Ahmad, Pakistan January 2011 The present work was carried out under the supervision of Prof. Dr. Jens Beckmann from April 2007 to December 2010 at the Institute of Chemistry and Biochemistry, at the Freie Universität Berlin. st1 Referee: Prof. Dr. Jens Beckmann nd2 Referee: Prof. Dr. Ulrich Abram Date of Defense: 18. 02. 2011 ii Acknowledgements I wish to express my deepest and sincere gratitude to Prof. Dr. Jens Beckmann for providing me the opportunity to carry out the research work under his supervision. His admirable supervision and encouragement were crucial towards the successful completion of the work. I am deeply grateful to Prof. Dr. Ulrich Abram for reviewing this thesis and the annual reports for the scholarship extension. I thank the employees of the facilities and service departments of the FU Berlin for the administrative tasks, the recording of spectra, elemental analysis, glassware and technical support. I thank Dr. Andrew Duthie of the School of Life and Environmental Sciences, Deakin University, Australia, for the measurement of ESI MS and MAS NMR spectra. Dr.