The Black Polymorph of TTF-CA: TTF Polymorphism and Solvent Effects in Mechanochemical and Vapor Digestion Syntheses, FT-IR, Crystal Packing, and Electronic Structure
- Lapidus, Saul H.
- Naik, Amit
- Wixtrom, Alex
- Massa, Nestor Emilio
- Ta Phuoc, Vinh
- del Campo, Leire
- Lebegue, Sebestien
- Aygyayn, Jaynos G.
- Abdel Fattah, Tarek
- Pagola, Silvina
DOIAbstract
Tetrathiafulvalene-chloranil (TTF-CA) was synthesized by two methods, liquid assisted grinding (LAG) and vapor digestion (VD), which largely reduce the use of reaction solvents. The effects of the small quantities of LAG solvent and solvent vapors in VD toward the formation of a particular TTF-CA product polymorph were studied from both tetrathiafulvalene forms (orange and brown) as reactants. It was concluded that a high solvent polarity index favors the formation of the ionic black polymorph of TTF-CA vs the quasineutral green form, whereas the crystal structure and crystal habit of the orange tetrathiafulvalene polymorph also favors the formation of the black TTF-CA. The crystal structure of the black TTF-CA was determined from synchrotr...
Add to ORKG