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Title: Aerobic epoxidation of olefins by carboxylate ligand‐based cobalt (II) compound: synthesis, X‐ray crystallography, and catalytic exploration
Author: Patra, Birendra Nath
Ghosh, Pameli
Sepay, Nayim
Gayen, Saikat
Koner, Subratanath
Brandao, Paula
Lin, Zhi
Debnath, Rakesh
Pratihar, Jahar Lal
Maity, Tanmay
Mal, Dasarath
Keywords: Carboxylate crystal structure
Homogeneous epoxidation
Issue Date: 11-Sep-2021
Publisher: Wiley
Abstract: A new quinoline carboxylate-based cobalt (II) metal compound, [Co (HL1)2(H2O)4] (1) (H2L1 = 2-hydroxyquinoline-4-carboxylic acid) has been hydrothermally synthesized, and fully characterized by single-crystal X-ray diffraction, powder X-ray diffraction, Fourier-transform infrared (FT-IR), elemental and thermo-gravimetric analysis. Compound 1 shows high thermal stability up to 300 C. Single-crystal X-ray diffraction study of 1 exhibited monomeric structure experiences further stabilized in solid state through different non-covalent interaction, for example, H-bonding and π...π stacking interaction and extended to 3D supramolecular H-bonded network. Compound 1 efficiently catalyzes epoxidation reactions of olefins under homogeneous conditions using molecular oxygen as an oxidizer. Another reported quinoline carboxylate-based nickel (II) monomer [Ni(L2)2(H2O)2] (2) (HL2 = thiazole-4-carboxylic acid) has been synthesized and characterized to compare it with compound 1 towards aerobic epoxidation reactions, where 1 comes as superior.
Peer review: yes
DOI: 10.1002/aoc.6552
ISSN: 0268-2605
Appears in Collections:CICECO - Artigos

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