with the structural and spectral properties of two derivatives of 2-thiohydantoin employing experimental and theoretical methods. The crystal structures of two novel cycloalkanespiro-5-(2-thiohydantoins) are described and compared with the available data on their dithio- and dioxo-analogues. For cyclopentanespiro-5-(2-thiohydantoin) – compound 1, two independent molecules are present in the asymmetric
2-Methylthio-imidazolins: a rare case of different tautomeric forms in solid state and in solution
作者:Venelin Enchev、Nadezhda Markova、Marin Marinov、Neyko Stoyanov、Marin Rogojerov、Angel Ugrinov、Iwona Wawer、Dariusz Maciej Pisklak
DOI:10.1007/s11224-016-0860-4
日期:2017.6
that the tautomericform in solution is different from that one in solid state. The substantial difference between positions of the characteristic C=N band in nonpolar solvent and crystalline phase for both compounds suggests that in solid state a “conjugated tautomericform” exists, while in solution phase there is “non-conjugated tautomericform”. In polar solvents, both tautomericforms exist. It