Catalytic Assessment of Copper(I) Complexes and a Polymer Analog towards the One‐Pot Synthesis of Imines and Quinoxalines

Sindhuja, Dharmalingam; Vasanthakumar, P.; Bhuvanesh, Nattamai; Karvembu, Ramasamy

doi:10.1002/ejic.201900931

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“…Among transition metal coordination compounds, copper coordination compounds occupy a vital position in organometallic chemistry due to their abundant coordination structures and potential applications in various fields [1][2][3][4][5]. In recent years, the catalytic activities of copper coordination compounds with various organic ligands have attracted extensive attention from chemists [6][7][8][9]. To develop novel and efficient catalysts, copper ions coordinated to a suitable ligand with multiple coordination sites and strong coordination abilities have been assembled into different copper coordination compounds [10,11].…”

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confidence: 99%

Synthesis, Crystal Structures and Catalytic Activities of Two Copper Coordination Compounds Bearing an N,N’-Dibenzylethylenediamine Ligand

2020

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Two copper coordination compounds bearing an N,N’-dibenzylethylenediamine ligand, namely [Cu3L(CH3COO)6]n (1) and [(CuCl4)∙(C6H5CH2NH2CH2)2] (2) (L = N,N’-dibenzylethylenediamine) were synthesized by the ethanol refluxing method. Powder X-ray diffraction (PXRD), infrared spectra (IR), elemental analyses, and single crystal X-ray diffraction were used to characterize and verify their structures. Structural analyses showed that the asymmetric unit of compound (1), composed of two Cu(II) cations, three acetate anions, and half of the ligand, was bridged by one acetate to obtain an infinite 1D chain structure. The analyses further showed that the asymmetric unit of compound (2), composed of two crystallographically independent [C6H5CH2NH2CH2]+ units, four chloride anions, and one central Cu(II) cation is connected into an infinite 2D network structure by the hydrogen bonding interactions. The copper compounds were used to catalyze the decomposition of H2O2, and the results showed that both of the compounds exhibited excellent catalytic activities under optimized conditions.

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