Heteronuclear coordination polymers with imidazole ligand: Synthesis, characterization and alcohol oxidation activities

KÜRKÇÜOĞLU G. S., YEŞİLEL O. Z., Mwanza T., Kekeç S., Ünver H., Şahin O.

Polyhedron, cilt.264, 2024 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 264
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1016/j.poly.2024.117263
  • Dergi Adı: Polyhedron
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, Chimica
  • Anahtar Kelimeler: 3D coordination polymer, Alcohol oxidation, Cadmium(II) complex, Imidazole complex, Tetracyanopalladate(II) complex
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

Two new heteronuclear Cd(II)/Pd(II) coordination polymers, [Cd2(µ-im)2(Him)4Pd(µ-CN)4]n (1) and [Cd(Him)2Pd(µ-CN)4]n (2) (Him: imidazole), have been synthesized under different conditions and characterized using elemental analysis, thermal analysis, FT-IR and Raman spectroscopy, single-crystal and powder X-ray diffraction techniques. In 1, the Cd(II) ions are bridged by imidazolate ligands to generate 1D chain structure. Neighbouring 1D chains were linked by [Pd(CN)4]2- ions to form 3D framework. In 2, the metal ions are bridged by cyanide ligands to generate 2D [Cd2Pd2(µ-CN)4]n network. Catalytic peroxidative oxidation activity of 1 and 2 was examined on the oxidation of benzyl alcohol using tertiary-butyl hydroperoxide (t-BuOOH) as the oxygen source. The compound 1 exhibited over 90 % product conversion at 80 °C in 24-hour reaction time. In addition, the catalyst exhibited high selectivity towards benzaldehyde and no over-oxidation product (benzoic acid) was detected.