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Selective encapsulation of lithium ion by the new azacage 5,12,17,trimethyl-1,5,9,12,17-penta-azabicyclo[7.5.5]nonadecane (L). Thermodynamic studies and crystal structures of the lithium complex [LiL][BPH4] and of the monoprotonated salt [HL][Cl]·(H2O)3
- Source :
- J. Chem. Soc., Chem. Commun.. :701-703
- Publication Year :
- 1989
- Publisher :
- Royal Society of Chemistry (RSC), 1989.
-
Abstract
- Multinuclear n.m.r. and thermodynamic studies in aqueous solution indicate that the cage-like azamacrobicycle 5,12,17-trimethyl-1,5,9,12,17-penta-azabicyclo[7.5.5]nonadecane (L) is able to selectively encapsulate the lithium ion, forming a stable 1 : 1 complex (log k= 3.1, ΔH°=–2.1kJ mol–1, ΔS°= 52.3 J mol–1 K–1); the crystal structures of the complex [LiL][BPh4] and of the monoprotonated salt [HL][Cl]·3H2O have been determined.
Details
- ISSN :
- 00224936
- Database :
- OpenAIRE
- Journal :
- J. Chem. Soc., Chem. Commun.
- Accession number :
- edsair.doi...........a98798e37d23baa8b85cbd7e1ecbb60d