In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called An FeIII Azamacrocyclic Complex as a pH-Tunable Catholyte and Anolyte for Redox-Flow Battery Applications, published in 2017, which mentions a compound: 63295-48-7, Name is Iron(III) trifluoromethanesulfonate, Molecular C3F9FeO9S3, COA of Formula: C3F9FeO9S3.
A reversible Fe3+/Fe2+ redox couple of an azamacrocyclic complex is evaluated as an electrolyte with a pH-tunable potential range for aqueous redox-flow batteries (RFBs). The FeIII complex is formed by 1,4,7-triazacyclononane (TACN) appended with 3 2-methyl-imidazole donors, denoted as Fe(Tim). This complex exhibits pH-sensitive redox couples that span E1/2(Fe3+/Fe2+) =317 to -270 mV vs. NHE at pH 3.3 and 12.8, resp. The 590 mV shift in potential and kinetic inertness are driven by ionization of the imidazoles at various pH values. The Fe3+/Fe2+ redox is proton-coupled at alk. conditions, and bulk electrolysis is non-destructive. The electrolyte demonstrates high charge/discharge capacities at both acidic and alk. conditions throughout 100 cycles. Given its tunable redox, fast electrochem. kinetics, exceptional stability/cyclability, this complex is promising for the design of aqueous RFB catholytes and anolytes that use the earth-abundant element Fe.
This compound(Iron(III) trifluoromethanesulfonate)COA of Formula: C3F9FeO9S3 was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.
Reference:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem