Thabks. But I prepared performed the experiment inside the glove box. And the DOL and DME, Li2S and Sulfur are directly used as purchased from Sigma. 

Hi Sumair, it means your Li2S is not dissolving/reacting with sulfur due insufficient temperature

I understand your solvents boiling points are bit low so you are afraid to increase temperature, try to increase 5 or 10 degrees more 

alternatively, take a high boiling point solvent among them, prepare polysulfides and then you can add another one

For sure, you can use tetra glyme for polysulfide preparation at 90 C...u can follow my papers.

Goodluck

Dear Dr. Ganguli,

Thanks a lot for your detailed description. Actually, I am following your paper for this preparation.

J. Am. Chem. Soc., 2017, 139 (1), pp 171–178.

2.3. Preparation of Lithium Polysulfides (Li2S4 and Li2S8)

I will try to increase the temperature 5 or 10 degree and see its effects.

Dear Dr. Ganguli, 

I have obtained the required solution. Thank you for your kind guidance.

What is the color of final Li2S4, Li2S6 and Li2S8 solutions prepared in DME:DOL?

I am also preparing these solution.

Thanks

Hi everyone I am also trying to make Lithium polysulfides solution by using analytical grade Li2S and S bought from sigma aldrich without further purification in 1:1 DOL and DME at 55 degree celcius but i am also getting a milky white solution instead of yellow color solution like Sumair i changed the temperature upto 90 degree but to no avail.

Hi atif,

Keep stirring it for 2-3 days, and you will obtain the required color. The temperature should be around 70 C.

Regards,

Sumair

Hai everyone,

I am trying to make1.5M Li2S6 polysulphide solution using Li2S and S in DOL:DME. I am getting a blood-red solution but some powder seems to be settled down in the solution. So my doubt is do we get a completely dissolved kind of solution? Can somebody help me with this.

Hi Das,

Not really sure, but this could be the high concentration. Try increasing the temperature to around 70 C and let it stir for more than 48 hours.

Thank you Sumair, I had tried this and most of the powder has been dissolved.