CRYSTAL STRUCTURES OF TWO NEW Cu(II) COMPLEXES
J. Niu1, L.–F. Yuan1, J. Li1, H. Guo2, F.–X. Zhang1
1Northwest University, Xian, Shaanxi, P. R. China
2Shaanxi University of Chinese Medicine, Xianyang, P. R. China
Keywords: copper complex, crystal structure, 2–picolinic acid, 4–nitrophenylamine, synthesis
Abstract
Two new copper (II) complexes [Cu(2–Pic)2(4–NPA) 2] (1) and [Cu(2–Pic)2]×2H2O (2), where 2–Pic is 2–picolinic acid and 4–NPA is 4–nitrophenylamine, are synthesized hydrothermally and their crystal structures are determined and analyzed. Complex 1 is crystallized in the monoclinic system space group P21/c and complex 2 is in the triclinic system space group P–1. Single crystal X–ray analysis reveals that the coordination environments around the Cu atoms of two complexes are four-coordinated and six-coordinated respectively. Complex 1 forms a 2D layer of a supermolecular structure through hydrogen bonds, and complex 2 is a 1D stair-stepping polymer chain and two water molecules linked by a hydrogen bond intersperse among the chains.
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