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- Intimate_ion_pair abstract "In chemistry the intimate ion pair concept introduced by Saul Winstein describes the interactions between a cation, anion and surrounding solvent molecules. In ordinary aqueous solutions of inorganic salts an ion is completely solvated and shielded from the counterion. In less polar solvents two ions can still be connected to some extent. In a tight or intimate or contact ion pair there are no solvent molecules between the two ions. When solvation increases, ionic bonding decreases and a loose or solvent-shared ion pair results. The ion pair concept explains stereochemistry in solvolysis.The concept of intimate ion pairs is used to explain the slight tendency for inversion of stereochemistry during an SN1 reaction. It is proposed that solvent or other ions in solution may assist in the removal of a leaving group to form a carbocation which reacts in an SN1 fashion; similarly, the leaving group may associate loosely with the cationic intermediate. The association of solvent or an ion with the leaving group effectively blocks one side of the incipient carbocation, while allowing the backside to be attacked by a nucleophile. This leads to a slight excess of the product with inverted stereochemistry, whereas a purely SN1 reaction should lead to a racemic product.".
- Intimate_ion_pair wikiPageID "1653431".
- Intimate_ion_pair wikiPageRevisionID "601191893".
- Intimate_ion_pair hasPhotoCollection Intimate_ion_pair.
- Intimate_ion_pair subject Category:Chemical_bonding.
- Intimate_ion_pair comment "In chemistry the intimate ion pair concept introduced by Saul Winstein describes the interactions between a cation, anion and surrounding solvent molecules. In ordinary aqueous solutions of inorganic salts an ion is completely solvated and shielded from the counterion. In less polar solvents two ions can still be connected to some extent. In a tight or intimate or contact ion pair there are no solvent molecules between the two ions.".
- Intimate_ion_pair label "Intimate ion pair".
- Intimate_ion_pair sameAs m.05kxfv.
- Intimate_ion_pair sameAs Q6057656.
- Intimate_ion_pair sameAs Q6057656.
- Intimate_ion_pair wasDerivedFrom Intimate_ion_pair?oldid=601191893.
- Intimate_ion_pair isPrimaryTopicOf Intimate_ion_pair.