jp7b09705_si_001.pdf (618.8 kB)
Coordination Abilities of 4,5-Dicyano-2-(trifluoromethyl)imidazolate Anion toward Sodium Cation: Structural and Spectroscopic Studies of Solid and Liquid Glyme-Solvated Electrolyte Systems
journal contribution
posted on 2017-11-17, 00:00 authored by Maciej Dranka, Grażyna
Z. Żukowska, Piotr Jankowski, Anna Plewa-Marczewska, Tomasz Trzeciak, Janusz ZacharaComprehensive
structural analysis of sodium 4,5-dicyano-2-(trifluoromethyl)imidazolate
(NaTDI) solvates with glymes (1–4), tetrahydrofuran, and crown
ethers has been performed. Several structural motifs obtained from
single-crystal X-ray analysis of complementary series of crystalline
adducts with varying O:Na ratios were correlated with spectroscopic
and thermal data to provide new information about the coordination
ability of heterocyclic anions toward sodium cations. Presented results
provide a basis for developing models of poly(ethylene oxide) electrolytes
and liquid systems for sodium ion battery electrolytes. We have found
a wide variety of anion–cation coordination types which allow
us to compare them with analogous lithium solvates in terms of Brown’s
valence-matching principle and Lewis acid strength (Sa) parameters. Noticed aggregation modes of sodium salts
confirm the occurrence of a solvate disproportionation conductivity
mechanism at high salt concentrations which can be used for developing
new heterocyclic salt systems for sodium batteries.
History
Usage metrics
Categories
Keywords
Sodium Cationheterocyclic salt systemscrown etherssingle-crystal X-ray analysisSpectroscopic StudiesCoordination AbilitiesNoticed aggregation modesLewis acid strengthlithium solvatessodium batteriessodium ion battery electrolytessolvate disproportionation conductivity mechanismLiquid Glyme-Solvated Electrolyte Systems ComprehensivePresented resultsheterocyclic anionssalt concentrationssodium cationssodium saltscoordination ability
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC