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CRYPTATE [1 record]

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Record 1 2013-11-13

English

Subject field(s)
  • Chemistry
OBS

Alkali Anions. Preparation and Crystal Structure of a compound Which Contains the Cryptated Sodium Cation and the Sodium Anion. ... When a saturated solution of sodium metal in ethylamine in the presence of a cation-complexing bicyclic diamino ether ("crypt") is cooled, crystals of [a stoichiometric sodium compound] form as thin hexagonal plates. ... One of the sodium species is trapped in "crypt" and the other is outside.

French

Domaine(s)
  • Chimie
DEF

Retenir sélectivement des ions alcalins et alcalino-terreux.

CONT

Chaque cage moléculaire peut être adaptée à la taille de l'ion à «crypter» : tel cryptate qui retiendra parfaitement le potassium, ne retiendra ni le lithium (trop petit) ni le césium (trop gros).

Spanish

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