Plenary lectures

1.Opening plenary lecture

Date  : 06th October 2016; 7.00 - 8.00 PM

Title: From molecule to crystal

Speaker : Prof G. R. Desiraju, Past president of Internation Union of Crystallography, Indian Institute of Sciences, Bengalore (india)

GautamGautam R. Desiraju is a structural chemist who has been in the Solid State and Structural Chemistry Unit of the Indian Institute of Science, Bangalore, India since 2009. Prior to this, he had been in the University of Hyderabad for 30 years. He has played a major role in the development and growth of the subject of crystal engineering. He is noted for gaining acceptance for the theme of weak hydrogen bonding among chemists and crystallographers. His books on crystal engineering (Elsevier, 1981; World Scientific, 2011) and the weak hydrogen bond in structural chemistry and biology (OUP, 1999) are particularly well known. He is one of the most highly cited Indian scientists with more than 375 research papers, 22000 citations and an h-index of 68.


How do molecules aggregate in solution, and how do these aggregates consolidate themselves in crystals? What is the relationship between the structure of a molecule and the structure of the crystal it forms? Why do some molecules give more than one crystal structure? Why do some crystal structures contain solvent? How does one design a crystal structure with a specified topology of molecules, or a specified coordination of molecules and/or ions, or even with a specified property? What are the relationships between crystal structures and properties, for molecular crystals? These are some of the questions that are being addressed today by the crystal engineering community, which is drawn from the larger communities of organic, inorganic and physical chemists, and, of crystallographers and solid state scientists. This talk will give a brief historical introduction to crystal engineering itself, and an assessment of the importance and utility of the supramolecular synthon which is one of the most important concepts in the practical use and application of the subject. It is also hoped to provide a look to the future, and indicate some directions in which the subject of crystal engineering might be moving, also in the context of crystallographic endeavors in the African continent.

G. R. Desiraju, Angew. Chem. Int. Ed., 46, 8342, 2007

G. R. Desiraju, J. Am. Chem. Soc., 135, 9952, 2013

G. R. Desiraju, Science, 343, 1057, 2014

2.Closing plenary lecture

Date  : 10th October 2016; 11.00 - 12.00 AM

Title: What is a crystal? - New answers to an old question

Speaker: Pr. Ron Lifshitz, Raymond and Beverly Sackler School of Physics & Astronomy, Tel Aviv University (Israel)

Ron LifshitzProfessor Lifshitz earned his Ph.D. in Physics at Cornell University in 1995 under the mentorship of Prof. David Mermin. Following postdoctoral work at The California Institute of Technology, he joined the faculty at Tel Aviv University in 1999, where he is a member ever since. He has worked in the field of quasicrystals throughout his career, starting with generalizations of the basic theory of symmetry to aperiodic crystals, and continuing with the development of theories of color and magnetic symmetry for periodic and aperiodic crystals. He has been a major participant in the scientific discussion on "What is a crystal?", and more recently his studies in this field have concentrated on the fundamental reason for self-organization of soft matter into quasicrystalline form. Lifshitz has also worked on nanomechanical systems since the late 1990s, studying diverse questions such as heat transport and dissipation mechanisms in the mesoscopic regime, nonlinear dynamics of coupled resonators, as well as their dynamics in the quantum regime. He has chaired the Commission on Aperiodic Crystals of the IUCr, as well as a number of conferences, among them a conference in celebration of the 25th anniversary of the discovery of quasicrystals, held in Tel Aviv in 2007, and the 56th Meeting of the Israel Physical Society in 2010. He is the recipient of the 2002 Olschwang Prize in Physics of the Israel Science Foundation, and of the 2013 Jean-Marie Dubois Award in Quasicrystals, and was recently elected a Fellow of the American Physical Society.


In 1982 Dan Shechtman discovered a new kind of crystal that seemed to contradict the laws of nature. His discovery for which he was awarded the 2011 Nobel Prize in Chemistry ignited a scientific revolution that demonstrated that, in science, what may seem impossible today might turn out to be real tomorrow. We shall review this scientific revolution and the many effects it had on crystallography, science in general, and even beyond.

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The Organizing Committee

Dr. Patrice KENFACK
 Secretary of the conference
Department of Chemistry, Faculty of Sciences, University of Dschang, PO BOX: 67 Dschang, Cameroon
Phone: (+237) 677 48 55 98 ; (+237) 696 81 84 86, pakenfack@gmail.com / patrice.kenfack@univ-dschang.org

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