I need to figure out a permanganate based ionic liquid that is usable at room temperature. Unfortunately, information on which compounds could be usable and which ones aren't is scarce. That's why I'm asking it here.
You asked for assistance getting information about “permanganate based ionic liquid” that can be used at room temperatures. The following two articles(1,2) may qualify as “permanganate based ionic liquid” Unfortunately, I do not have access to the full text of these articles so I do not know which ionic liquids are being used. However, that fact that these are organic oxidation process suggest that the reactions might be done in a temperatures range which may of be useful to you.
Nevertheless, it looks like permanganate can be used in the presence of ionic liquid for some oxidation reactions.
Abstract: The selective oxidation of primary and secondary benzylic alcoholsnwith potassium permanganate in ionic liquids to give corresponding aldehydes and ketones in 83–97% yields has been described.
Anil Kumar, Nidhi Jain & S. M. S. Chauhan (2004) Oxidation of Benzylic Alcohols to Carbonyl Compounds with Potassium Permanganate in Ionic Liquids, Synthetic Communications, 34:15, 2835-2842, DOI: 10.1081/SCC-200026242
Abstract: A ligand-free catalytic epoxidation system using permanganate in a surfactant-like ionic liquid (IL) medium was developed. The results indicate that the IL takes crucial effects in the epoxide selectivity. The loading of permanganate is also found critical in preventing over-oxidation of epoxides. The system with 0.3 mol% permanganate and 3.5-equivalent CH3CO3H is able to achieve excellent yields and selectivity of epoxides. The study of epoxidation with KMnO4 in IL medium reveals an unusual oxidation behavior of permanganate not found in traditional solvents
Lu, Yu-Jing & Wong, Wing-Leung & Chow, Cheuk-Fai. (2015). A surfactant-like ionic liquid with permanganate dissolved as a highly selective epoxidation system. Catalysis Communications. 69. 25-28. 10.1016/j.catcom.2015.05.020.