Akademik Veri Yönetim Sistemi
Journal of Molecular Structure, cilt.1359, 2026 (SCI-Expanded, Scopus)
This study aimed to develop novel chiral ferrocenyl-phosphazene conjugates integrating ferrocene units with aliphatic diamines based on the hexachlorocyclotriphosphazene, P3N3Cl6 (HCCP). The significance of this work lies in the integration of ferrocenyl-aliphatic diamine linkages into a single isomeric form of the as-yet-undiscovered unsymmetrically substituted ferrocenyl-dispirocyclotriphosphazene. The merit of this material design arises from the combination of a metal-organic ferrocene and an inorganic phosphazene component within a single molecule. Synthetic reactions were conducted using a nucleophilic substitution strategy, yielding hybrid molecules. Tetrachloromonoferrocenyl-(N/N)-spirocyclotriphosphazenes were primarily synthesized from the reactions of hexachlorocyclotriphosphazene, P3N3Cl6 (HCCP), with ferrocenyldiamines. Reactions of tetrachloromonoferrocenyl-(N/N)-spirocyclotriphosphazenes with 1,3-diaminopropane and 1,4-diaminobutane led to the formation of propane-1,3-diamino- and butane-1,4-diamino- dichloromonoferrocenyl-(N/N)-dispirocyclotriphosphazenes, respectively. The structural characterizations of these compounds were carried out using elemental analysis, 31P, 13C, 1H NMR, FTIR, and LC-MS techniques. Additionally, the molecular structure of a geminal- propane-1,3-diamino- dichloromonoferrocenyl-(N/N)-dispirocyclotriphosphazene was confirmed by X-ray crystallography. After the appending of aliphatic diamines, one chiral phosphorus center emerges in each of the dispirophosphazenes. Furthermore, a compound whose crystal structure was solved was confirmed to be a racemic mixture using 31PNMR spectroscopy with the addition of a chiral solvating agent (R)-(−)-2,2,2-trifluoro-1-(9-anthryl)ethanol (CSA).