Low density and soft matter Figure 1. (a) Chemical Diagram of H2; (b) Correspondent views of the packing of phases I (upper) and II (lower) of H2, within the unit cell showing the relative shifts of molecules. H atoms omitted for clarity; (c) Phase I, unit cell content with two arrows indicating the direction of the calculated autovector of the lowest frequency normal mode at 22.4 cm–1. (All the figures are adapted from E. Parisi et al., J. Am. Chem. Soc. 2025 licensed under CC BY 4.0). E. Parisi1, E. Santagata2, P. Kula3, J. Herman3, S. Gupta4, E. Simone1, S. Zarrella5, T. M. Korter5, R. Centore2 1 Department of Applied Science and Technology, Polytechnic of Turin, Turin, Italy 2 Department of Chemical Science, University of Naples Federico II, Naples, Italy 3 Faculty of Advanced Technologies and Chemistry, Military University of Technology, Warsaw, Poland 4 Department of Physics, Raiganj University, Uttar Dinajpur, Raiganj, W.B., India 5 Department of Chemistry, Syracuse University, College Place, Syracuse, New York, United States e-mail: roberto.centore@unina.it; emanuele.parisi@polito.it Acknowledgments We acknowledge Elettra Sincrotrone Trieste for providing access to its synchrotron radiation facilities and for financial support. European Union-Next Generation EU, within the projects PRIN 2022 “Crystal Engineering of acentric and mechanically responsive smart crystals−ACME” (CUP E53D23009360006. MUR PE14 “RESearch and innovation on future Telecommunications systems and networks, to make Italy more smartRESTART” (CUP E63C22002040007). CryForm: European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant agreement 949229). National Science Centre grant 2019/33/B/ ST5/ 02658. ITS Research Computing team at Syracuse University for providing computational resources Original paper E. Parisi et al., J. Am. Chem. Soc. 147, 14731 (2025); DOI:10.1021/jacs.5c03448. Fig. 1 Elettra Highlights 2024–2025 49
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