Unexpected chalcogen bonds in tetravalent sulfur compounds

Literature Information

Publication Date 2019-05-09
DOI 10.1039/C9CP01033E
Impact Factor 3.676
Authors

Antonio Franconetti, David Quiñonero, Antonio Frontera, Giuseppe Resnati


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Abstract

In this manuscript we have combined a CSD (Cambridge Structural Database) analysis with theoretical calculations (RI-MP2/def2-TZVP level of theory) to study the importance of polarizability in chalcogen bonding interactions. It is well known that chalcogen bonds are stronger for less electronegative chalcogen atoms, i.e., S < Se < Te, and in the presence of electron-withdrawing substituents at the chalcogen. Herein, we report experimental and theoretical evidence (RI-MP2/def2-TZVP) that the chalcogen bond acceptor (Lewis base) has a preference in some cases for the σ-hole that is opposite to the more polarizable group instead of the more electron withdrawing one, as confirmed by Natural Bond Orbital (NBO) and Bader's theory of “atoms-in-molecules” computational tools.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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