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In chemistry, a chalcogen bond (ChB) is an attractive interaction in the family of σ-hole interactions, along with halogen bonds. Electrostatic, charge-transfer (CT) and dispersion terms have been identified as contributing to this type of interaction. In terms of CT contribution, this family of attractive interactions has been modeled as an electron donor interacting with the σ* orbital of a C-X bond of the bond donor. In terms of electrostatic interactions, the molecular electrostatic potential (MEP) maps is often invoked to visualize the electron density of the donor and an electrophilic region on the acceptor, where the potential is depleted, referred to as a σ-hole. ChBs, much like hydrogen and halogen bonds, have been invoked in various non-covalent interactions, such as protein folding, crystal engineering, self-assembly, catalysis, transport, sensing, templation, and drug design.
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In chemistry, sigma hole interactions are a family of intermolecular forces that can occur between several classes of molecules and arise from an energetically stabilizing interaction between a positively-charged site, termed a sigma hole, and a negatively-charged site, typically a lone pair, on different atoms that are not covalently bonded to each other. These interactions are usually rationalized primarily via dispersion, electrostatics, and electron delocalization and are characterized by a strong directional preference that allows control over supramolecular chemistry.
In chemistry, a pnictogen bond (PnB) is a non-covalent interaction, occurring where there is a net attractive force between an electrophilic region on a 'donor' pnictogen atom (Pn) in a molecule, and a nucleophilic region on an 'acceptor' atom, which may be in the same or another molecule. Closely related to halogen and chalcogen bonding, pnictogen bonds are a form of non-covalent interaction which can be considered in terms of charge-transfer and electrostatic interactions.
References
- ↑ "RCS News, June 2011, pag. 30: RCS-SCI Award to Giuseppe Resnati" (PDF).
- ↑ Halogen Bonding: Fundamentals and Applications Metrangolo, P. and Resnati, G. Eds.; 2008; Springer; Berlin, Heidelberg, New York. ISBN 978-3-540-74329-3
- ↑ G. Resnati et al. The Chalcogen Bond in Crystalline Solids: A World Parallel to Halogen Bond Accounts of Chemical Research 2019, 52, 1311-1324 (DOI: org/10.1021/acs.accounts.9b00037)
- ↑ G. Resnati Synthesis of Chiral and Bioactive Fluoroorganic Compounds Tetrahedron 1993, 49, 9385-9445 (DOI:10.1016/S00404020(01)80212-X)
- ↑ G. Resnati et al. Perfluorinated Oxaziridines: Synthesis and Reactivity Chemical Reviews 1996, 96, 1809-1824 (DOI: 10.1021/cr941146h)
- ↑ G. Resnati et al. 19F Magnetic Resonance Imaging (MRI): From Design of Materials to Clinical Applications Chemical Reviews 2015, 115, 1106−1129 (DOI: org/10.1021/cr500286d)
- ↑ "Resnati coordinated an IUPAC project on crystal engineering".[ permanent dead link ]
- ↑ G. Resnati et al. Halogen Bonding in Supramolecular Chemistry Angew. Chem. Int. Ed. 2008, 47, 6114-6127 ( DOI: 10.1002/anie.200800128 )
- ↑ G. Resnati et al. Halogen bonded Borromean networks by design: topology invariance and metric tuning in a library of multi-component systems Chemical Sci. 2017 ( DOI: 10.1039/C6SC04478F )
- ↑ G. Resnati et al. Halogen Bonding Based Recognition Processes: A World Parallel to Hydrogen Bonding Acc. Chem. Res. 2005, 38, 386-395 (DOI: 10.1021/ar0400995 )
- ↑ G. Resnati et al. An Adaptable and Dynamically Porous Organic Salt Traps Unique Tetrahalide Dianions Angew. Chem. Int. Ed. 2013, 52, 13444-13448 ( DOI: 10.1002/anie.201307552 )
- ↑ G. Resnati et al. Halogen-bonding-triggered supramolecular gel formation Nature Chem. 2013, 5, 42-47 ( DOI:10.1038/nchem.1496 )
- ↑ Halogen Bonding I - Impact on Materials Chemistry and Life Sciences Metrangolo P. and Resnati G. Eds.; 2014; Springer; Berlin, Heidelberg, New York. ISBN 978-3-319-14056-8
- ↑ Halogen Bonding II - Impact on Materials Chemistry and Life Sciences Metrangolo P. and Resnati G. Eds.; 2015; Springer; Berlin, Heidelberg, New York. ISBN 978-3-319-15731-3
- ↑ "ICNI-2022, The van der Waals Prize".
- ↑ "RCS News, June 2011, pag. 30: RCS-SCI Award to Giuseppe Resnati" (PDF).
- ↑ "Intermolecular Interactions and Structural Aspects in Organic Chemistry awards" (PDF).
- ↑ "Academy of Europe: Resnati Giuseppe".
- ↑ Journal of Fluorine Chemistry: Editorial Board.
- ↑ Rogers, Robin D. (2012). "Crystal Growth & Design Around the World in 2012, DOI:10.1021/cg201654d". Crystal Growth & Design. 12: 1–2. doi:10.1021/cg201654d.
- ↑ "ISXB-1".
- ↑ "Official Web-site of the Faraday Discussion".
- ↑ "Rotary Club Morimondo Abbazia".
- ↑ "L'Orma, anno XL, N.1, Marzo 2022" (PDF).
- ↑ "Order of the Holy Sepulchre of Jerusalem".
- ↑ "Sacred Military Constantinian Order of Saint George (Spain)".
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