Abstract
The crystal structures of [CH3O(CH2CH2O)(n)CH3]:LiAsF6 (n = 8-12) are reported. Each glyme forms a structurally unique complex with LiAsF6. In all glymes Li+ ions are six coordinated when only ether oxygens are involved in coordination. The coordination number is reduced to five when a fluorine from the AsF6- anion is involved in coordination. The absence of convenient pathways for Li+ ions in the structures account for low lithium transport numbers (t(+) < 0.3) in the reported complexes, while greater distances between neighboring anions explain lower conductivities, compared with complexes prepared with lower glymes (n = 3, 4).
Original language | English |
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Pages (from-to) | 4039-4044 |
Number of pages | 6 |
Journal | Chemistry of Materials |
Volume | 20 |
DOIs | |
Publication status | Published - 24 Jun 2008 |
Keywords
- CRYSTALLINE POLYMER ELECTROLYTES
- AMORPHOUS CONCENTRATED LIQUID
- CATION SOLVATE STRUCTURES
- IONIC-CONDUCTIVITY
- PEO6-LIXF6
- COMPLEXES
- MODELS
- SB