Synthesis and Characterization of Schiff Bases and Cu(II) and Ni(II) Complexes of Polyhedral Oligomeric Silsesquioxane (POSS) Compounds

Year 2022, Volume: 12 Issue: 3, 1665 - 1676, 01.09.2022

Bestami Atik , Cahit Demetgül

https://doi.org/10.21597/jist.1102515

Abstract

In this study, two different polyhedral oligomeric silsesquioxane (POSS) were
synthesized using 3-aminopropyltriethoxysilane (APTES) and N-(2-aminoethyl)-3-
aminopropyltrimethoxysilane (AEPTMS). POSS Schiff bases were synthesized as a result of the condensation reaction of POSS compounds with salicylaldehyde and 5-bromosalicylaldehyde. The
structures of POSS and its ligand derivatives were by spectroscopic (Elemental analysis (C, H, N), 1HNMR, 29Si-NMR, FT-IR) methods. Cu(II) and Ni(II) metal complexes of Schiff Bases were also synthesized. The structures of the isolated POSS Schiff base metal complexes were tried to be clarified with FT-IR, Magnetic susceptibility balance and ICP-OES. The results showed that metal ions bind to Schiff bases via phenolic oxygen and azomethine nitrogen.

Keywords

POSS, Schiff base, metal complexes

Polihedral Oligomerik Silseskioksan (POSS) Bileşiklerinin Schiff Bazları ve Cu(II) ve Ni(II) Komplekslerinin Sentezi ve Karakterizasyonu

Abstract

Bu çalışmada, 3-aminopropiltrietoksisilan (APTES) ve N-(2-aminoetil)-3-aminopropiltrimetoksisilan (AEPTMS) kullanılarak iki farklı polihedral oligomerik silseskioksan (POSS) sentezlenmiştir. Elde edilen bu POSS bileşikleri, salisilaldehit ve 5-bromosalisilaldehit ile kondenzasyon tepkimesi sonucu POSS Schiff bazları sentezlenmiştir. POSS ve ligand özelliğindeki türevlerinin yapıları spektroskopik (Elementel analiz (C, H, N), 1H-NMR, 29Si NMR, FT-IR) yöntemlerle aydınlatılmıştır. Schiff Bazlarının Cu(II) ve Ni(II) metal kompleksleri sentezlenmiştir. İzole edilen POSS Schiff bazı metal komplekslerinin yapıları FT-IR, Magnetik duyarlılık terazisi ve ICP-OES ile aydınlatılmaya çalışılmıştır. Sonuçlar, metal iyonlarının Schiff bazlarına fenolik oksijen ve azometin azotu üzerinden bağlandığını göstermiştir.

Keywords

POSS, Schiff bazı, metal kompleksleri

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