Cooperative Noncovalent Interactions Induce Ion Pair Separation in Diphenylsilanides

This crystallographic and computational study describes an unusual potassium silanide structure. A contact ion pair is expected in the solid state between potassium and silicon, yet the potassium cation binds an aromatic ring and the anionic silanide interacts with CH bonds on neighboring crown ethe...

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Bibliographic Details
Published in:Chemistry : a European journal 2017-11, Vol.23 (62), p.15633-15637
Main Authors: Marro, Eric A., Press, Eric M., Purkait, Tapas K., Jimenez, Daniel, Siegler, Maxime A., Klausen, Rebekka S.
Format: Article
Language:English
Subjects:
anions
Bonding strength
Chemical bonds
Chemistry
Computer applications
crown compounds
Crystallography
Ion pairs
Ions
Molecular structure
pi interactions
Potassium
silicon
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Summary:This crystallographic and computational study describes an unusual potassium silanide structure. A contact ion pair is expected in the solid state between potassium and silicon, yet the potassium cation binds an aromatic ring and the anionic silanide interacts with CH bonds on neighboring crown ether molecules. These structure‐bonding phenomena are attributed to strong soft–soft interactions. Both bound to the crown: This crystallographic and computational study describes an unusual separated ion pair in which crown ether molecules bind both cation and anion. These structure–bonding phenomena are attributed to strong soft–soft interactions.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201704217