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

Öz

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.

Anahtar Kelimeler

• POSS
• Schiff base
• metal complexes

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

Öz

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.

Anahtar Kelimeler

• POSS
• Schiff bazı
• metal kompleksleri

Kaynakça

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