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Synthesis and Magnetic Properties of a Tetranuclear Copper(II) Coordination Compound Constructed of a Multi‐carboxylate Ligand and 2,2′‐Bipyridine
Author(s) -
Jiang Xiang,
Xia Hua,
Zhu YuFang,
Huang ChaoXin,
Liao YuHai
Publication year - 2011
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201100161
Subject(s) - crystallography , carboxylate , triclinic crystal system , chemistry , hydrogen bond , magnetic susceptibility , ligand (biochemistry) , copper , crystal structure , 4,4' bipyridine , thermogravimetric analysis , stereochemistry , molecule , biochemistry , receptor , organic chemistry
A novel inorganic‐organic hybrid compound [Cu 2 (TTHA)(bpy) 2 (H 2 O)] 2 · 6H 2 O (TTHA = 1,3,5‐triazine‐2,4,6‐ triamine hexaacetic acid; bpy = 2,2′‐bipyridine) was synthesized and characterized. The compound crystallizes in the triclinic space group P $\bar{1}$ with cell dimensions of a = 10.4837(14) Å, b = 13.0935(17) Å, c = 16.183(2) Å, α = 93.386(2)°, β = 96.181(2)°, γ = 92.570(2)°, V = 2201.7(5) Å 3 and Z = 1. Single‐crystal X‐ray analysis shows that the structure is made up by a strictly planar CuO 2 Cu ring with monoatomic bridging carboxylate oxygen atoms and a Cu–Cu distance of 3.458 Å. The 3D supermolecular network is constructed by three kinds of interactions including coordinate covalent bonds, hydrogen bonds, and π–π staking interactions. Thermogravimetric analysis, IR spectrum, and PXRD of the compound are given. The variable‐temperature magnetic susceptibility analysis of this compound (2–300 K) shows a weak ferromagnetic magnetic exchange interaction with 2 J = 2.23 cm –1 .