Date & Time: Apr 26 2024 | 11:30am Location: iSTEM Building 2, Room 1218 Special Information: 2024 UGA Chemistry Distinguished Alumnus 1 Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany; e-mail: prs@uni-giessen.de; www.uni-giessen.de/schreiner Keywords: catalysis • chemical bonding • noncovalent interactions The Gecko can walk up a glass window because of the adhesion in hydrophobic setae on its toes that convey van der Waals (vdW) interactions with the surface. [2] and in catalysis.[7] The and in catalysis.[7] attractive part of vdW-interactions is an electron correlation effect referred to as London dispersion. Its role in the formation of condensed matter has been known since van der Waals[3] and London[4] who related dispersion to polarizability. London dispersion has been underappreciated in molecular chemistry as a key element of structural stability, chemical reactivity, and catalysis. This negligence is due to the notion that dispersion is considered weak, which is only true for one pair of interacting atoms. For increasingly larger structures, the overall dispersion contribution grows rapidly and can amount to tens of kcal mol–1 . This presentation shows selected examples that emphasize the importance of inter- and intramolecular dispersion for molecules consisting mostly of first row atoms.[5] We note the synergy of experiment and theory that now has reached a stage where dispersion effects can be examined in fine detail. This forces us to re-consider our perception of steric hindrance and stereoelectronic effects, and even the transferability of chemical bond parameters from one molecule to another, both in structural chemistry Acknowledgement: This work was supported by the Deutsche Forschungsgemeinschaft. [1] Reviews: a) J. P. Wagner, P. R. Schreiner, Angew. Chem. Int. Ed. 2015, 54, 12274-12296; b) L. Rummel, P. R. Schreiner, Angew. Chem. Int. Ed. 2024, 63, e202316364. [2] K. Autumn, M. Sitti, Y. A. Liang, A. M. Peattie, W. R. Hansen, S. Sponberg, T. W. Kenny, R. Fearing, J. N. Israelachvili, R. J. Full, Proc. Natl. Acad. Sci. 2002, 99, 12252-12256. [3] J. D. van der Waals, Leiden University (Leiden, The Netherlands), 1873. [4] F. London, Z. Phys. 1930, 63, 245-279. [5] a) S. Rösel, C. Balestrieri, P. R. Schreiner, Chem. Sci. 2017, 8, 405-410; b) J. P. Wagner, P. R. Schreiner, J. Chem. Theory Comput. 2016, 12, 231-237; c) E. Prochazkova, A. Kolmer, J. Ilgen, M. Schwab, L. Kaltschnee, M. Fredersdorf, V. Schmidts, R. C. Wende, P. R. Schreiner, C. M. Thiele, Angew. Chem. Int. Ed. 2016, 55, 15754-15759; d) C. Wang, Y. Mo, J. P. Wagner, P. R. Schreiner, E. D. Jemmis, D. Danovich, S. Shaik, J. Chem. Theory Comput. 2015, 11, 1621-1630; e) J. P. Wagner, P. R. Schreiner, J. Chem. Theory Comput. 2014, 10, 1353-1358; f) A. A. Fokin, L. V. Chernish, P. A. Gunchenko, E. Y. Tikhonchuk, H. Hausmann, M. Serafin, J. E. P. Dahl, R. M. K. Carlson, P. R. Schreiner, J. Am. Chem. Soc. 2012, 134, 13641- 13650; g) P. R. Schreiner, L. V. Chernish, P. A. Gunchenko, E. Y. Tikhonchuk, H. Hausmann, M. Serafin, S. Schlecht, J. E. P. Dahl, R. M. K. Carlson, A. A. Fokin, Nature 2011, 477, 308-311; h) S. Grimme, P. R. Schreiner, Angew. Chem. Int. Ed. 2011, 50, 12639-12642; i) A. A. Fokin, D. Gerbig, P. R. Schreiner, J. Am. Chem. Soc. 2011, 133, 20036-20039; j) S. Rösel, H. Quanz, C. Logemann, J. Becker, E. Mossou, L. Cañadillas-Delgado, E. Caldeweyher, S. Grimme, P. R. Schreiner, J. Am. Chem. Soc. 2017, 139, 7428-7431; k) S. Rösel, J. Becker, W. D. Allen, P. R. Schreiner, J. Am. Chem. Soc. 2018, 140, 14421-14432. [6] a) J. M. Schümann, J. P. Wagner, A. K. Eckhardt, H. Quanz, P. R. Schreiner, J. Am. Chem. Soc. 2021, 143, 41-45; b) J. M. Schümann, L. Ochmann, J. Becker, A. Altun, I. Harden, G. Bistoni, P. R. Schreiner, J. Am. Chem. Soc. 2023, 145, 2093-2097. [7] a) C. Eschmann, L. Song, P. R. Schreiner, Angew. Chem. Int. Ed. 2021, 60, 4823-4832; b) L. Rummel, M. H. J. Domanski, H. Hausmann, J. Becker, P. R. Schreiner, Angew. Chem. Int. Ed. 2022, 61, e202204393. Type of Event: Departmental Colloquium Special Seminar Research Areas: Organic Chemistry Prof. Peter Schreiner Department: Professor/Liebig Chair, Institute of Organic Chemistry Justus Liebig University Giessen, Germany Learn more about Prof. Schreiner and his work https://chem.uga.edu/directory/people/peter-r-schreiner