Synthesis, structural characterization and properties evaluation of two new zwitterionic siloxane compounds

• Published in: Polyhedron 2020-03, Vol.179, p.114356, Article 114356
• Main Authors: Bargan, Alexandra, Cazacu, Maria, Dascalu, Mihaela, Macsim, Ana-Maria, Soroceanu, Alina, Macsim, Ioan Florin
• Format: Article
• Language: English
• Subjects: Siloxane surfactant; Sorption capacity; Supramolecular structure
• ISSN: 0277-5387
• DOI: 10.1016/j.poly.2020.114356

[Display omitted] •Single-crystals synthesis of 1,3-bis(3-ammoniumpropyl)tetramethyldisiloxane salts.•The new compounds were characterized by different specific methods.•The thermal and moisture stability for these new compounds were studied.•The crystalline salts can be used as capture media-host for multiple guest gases. 1,3-Bis(3-aminopropyl)tetramethyldisiloxane is a valuable tool for the introduction of siloxane segments into different organic-inorganic structures. This paper demonstrates how 1,3-bis(3-aminopropyl)tetramethyldisiloxane can easily form crystalline salts with different counterparts with which it comes into contact. Thus, in the reaction chamber 1,3-bis(3-ammoniumpropyl)tetramethyldisiloxane chloride and nitrate were formed in the detriment of one stage metal (Ni and Cu) complexes of Schiff's base with 4-imidazole carboxaldehyde. The salt products were isolated in crystalline state and were structurally characterized by single-crystal X-ray diffraction, elemental and spectral (FT-IR, 1H NMR) analysis. The thermal and moisture stability as well as the aggregation ability in solution and sorption capacity for certain molecules were evaluated by adequate techniques.