Synthesis of Cyclic Aza-Ether Compounds and Studies of Their Use as Anion Receptors in Non-Aqueous Lithium Halide Salt Solutions

Conference · Mon Nov 01 04:00:00 EST 1999

OSTI ID:770785

Lee, H S ^[1]; Sun, X; Yang, X Q; McBreen, J; Callahan, J H; Choi, L S

---

1. Brookhaven National Laboratory

A series of new anion receptors, based on cyclic aza-ether compounds, have been synthesized. In all of these cyclic aza-ether compounds, the electron-withdrawing group CF{sub 3}SO{sub 2} was attached to each of the nitrogen atoms. When used as additives, all of them can significantly increase the ionic conductivity of lithium halide salts in THF solutions. This is due to the complexation between these compounds and halide anions. Ionic conductivity studies show that the complexation behavior is related to both the ring structure of the cyclic compounds and the characteristics of the halide anions. X-ray diffraction data show that the diffraction patterns of the complex crystals are different from the pure cyclic aza-ether compounds. New Bragg peaks representing a large d-spacing ({approx}15 {angstrom}) are observed for the complex crystals which provides a clear evidence for complexation.

• Research Organization: Brookhaven National Lab., Upton, NY (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC02-98CH10886
• OSTI ID: 770785
• Report Number(s): BNL-66571; KC-02-03-010
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ADDITIVES
BRAGG CURVE
IONIC CONDUCTIVITY
LITHIUM HALIDES
ORGANIC NITROGEN COMPOUNDS
SYNTHESIS
X-RAY DIFFRACTION