Does anyone know about sodium salts that are soluble in THF in a range of ca. 1M?
Please look at the following below links which may help you in your analysis:
https://pdfs.semanticscholar.org/7e63/b5acd087e05396d85567cc35c6f5d7a3dacb.pdf
Thanks
This is a very good question.
In general, there are some inorganic salts (containing transition metals) which have significant solubility in solvents such as ethers (e.g.THF) while they preserve their salty nature.
The salts of the first 3 Groups of the Periodic Table (including Na) have high lattice energies which cannot be overcome by the solvation energies provided by moderately polar aprotic solvents such as THF. If few Na ions are separated from their salts, then they will just undergo strong complexation with THF "a process that cannot be categorized as dissolution, at all".
Zhang's group reported using NaFSI in THF as electrolyte.
You could refer paper as following:
Article Enabling room temperature sodium metal batteries
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