Synthesis, Structure, and Properties of a Dinuclear Cu(II) Coordination Polymer Based on Quinoxaline and 3,3‑Thiodipropionic Acid Ligands

Tella, A. C. and Owalude, S. O. and Adimula, V. O. and Oladipo, A. C. and Olayemi, V. T. and Ismail, B and Mumtaz, A. and Rehman, A. U and Khan, A M. and Clayton, H. S. and Tahir, N. M. (2021) Synthesis, Structure, and Properties of a Dinuclear Cu(II) Coordination Polymer Based on Quinoxaline and 3,3‑Thiodipropionic Acid Ligands. Joirnal of Inorganic and Organometallic Polymers and Materials, 31. pp. 3089-3100.

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Abstract

The coordination polymer [ Cu2(TDPH)4(QNX)].DMF, (QNX = Quinoxaline; TDPH = 3,3-thiodipropionic acid), has been prepared by reaction of copper acetate, TDPH, and quinoxaline. The compound was characterized by elemental analysis, FTIR spectroscopy, and single-crystal X-ray diffraction. The crystal is monoclinic with a P21/n space group and dimensions of a = 12.889(3) Å, b = 14.983(4) Å, c = 14.091(3) Å, α = 90°, β = 90.200(11)°, γ = 90°, V = 2721.18 (2) Å3, Z = 4. The ligands are hexagonally coordinated to the Cu(II) centre in the form of Cu2O4N with one nitrogen atom from the quinoxaline ligand, and four oxygen atoms from four TDPH molecules in a monodentate fashion. The Cu–Cu bond length was 2.642(1) and 2.629(1) Å for the Cu1–Cu1 and Cu2–Cu2 bonds. The QNX ligand bridged the two copper atoms. The catalytic reduction of 4-nitrophenol to 4-aminophenol using NaBH4 in the presence of [ Cu2(TDPH)4(QNX)].DMF, as catalyst was completed within 11 min. The 4-aminophenol product was confirmed using 1H NMR spectroscopy

Item Type: Article
Subjects: Q Science > QD Chemistry
Depositing User: Mrs Adetola Oladipo
Date Deposited: 13 Jul 2021 15:45
Last Modified: 13 Jul 2021 15:45
URI: https://eprints.lmu.edu.ng/id/eprint/3430

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