Schiff Base and Its Fe(II), Zn(II), Ru(II), Pd(II) Complexes Containing ONS Donor Atoms: Synthesis, characterization and Catalytic Studies

Öz

The work include the synthesis, spectroscopic characterization and as well as catalytic activities of Fe(II), Zn(II), Ru(II), and Pd(II) complexes with a novel Schiff base ligand derived from methyl 2-amino-5,5,7,7-tetramethyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate and salicylaldehyde. Spectroscopic techniques including IR, UV–Vis, NMR, and mass analysis as well as elemental analysis and magnetic susceptibility measurement were used to identify the compounds. Based on elemental and spectral studies octahedral geometry was proposed to Fe(II), Zn(II) and Ru(II) complexes and square planar geometry was proposed to Pd(II) complex. To improve more efficient and stable catalysts, we wanted to study if there is any influence the catalytic activity of ruthenium complex for the transfer hydrogenation of ketones and we wanted to examine the catalytic activities of palladium complex in Suzuki C-C cross coupling reactions under various conditions.

Anahtar Kelimeler

• Suzuki coupling
• Metal complexes
• Carboxylate
• Spectroscopic techniques

ONS Donor Atomları İçeren Schiff Bazı ve Fe(II), Zn(II), Ru(II), Pd(II) Kompleksleri: Sentez, Karakterizasyon ve Katalitik Çalışmalar

Öz

Bu çalışma metil 2-amino-5,5,7,7-tetrametil-4,5,6,7-tetrahidrobenzo[b]tiyofen-3-karboksilat ve salisilaldehitten elde edilen yeni bir Schiff bazı ligandı ile Fe(II), Zn(II), Ru(II) ve Pd(II) komplekslerinin sentez, spektroskopik karakterizasyon ilaveten katalitik aktivitelerini içermektedir. Bileşikleri tanımlamak için element analiz ve manyetik süsseptibilite ölçümü dâhil olmak üzere IR, UV-Vis, NMR ve kütle analizi içeren spektroskopik teknikler kullanıldı. Elemental ve spektral çalışmalara dayanarak, Fe(II), Zn(II) ve Ru(II) komplekslerine oktahedral geometri ve Pd (II) kompleksine kare düzlem geometri önerildi. Daha etkili ve kararlı katalizörler geliştirmek için, rutenyum kompleksinin ketonların hidrojen transferindeki katalitik aktiviteyi etkileyip etkilemediğini ve paladyum kompleksinin çeşitli koşullar altında Suzuki C-C çapraz eşleşme tepkimelerindeki katalitik aktivitelerini incelemek istedik.

Anahtar Kelimeler

• Suzuki eşleşme
• Metal kompleksler
• Karboksilat
• Spektroskopik teknikler

Kaynakça

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