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

Year 2019, Volume: 21 Issue: 61, 73 - 82, 15.01.2019

Kenan Buldurun , Naki Çolak , İsmail Özdemir , Nevin Turan

Abstract

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.

Keywords

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

Abstract

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.

Keywords

Suzuki eşleşme, Metal kompleksler, Karboksilat, Spektroskopik teknikler

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