Two one-dimension copper(II) coordination polymers based on imine-based bidentate Schiff-base ligand: Synthesis, crystal structure and luminescent properties

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• 作者：Dong-Bin  ; Dang ; Meng-Meng  ; Li ; Yan  ; Bai  ; ;   ; ^{baiyan@henu.edu.cn} ;   ; ^{hdbyan@163.com} ; Jun-Li  ; Wang
• 关键词：Copper(II) ; Coordination polymer ; Crystal structure ; Luminescent properties
• 刊名：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
• 出版年：2011
• 出版时间：December 2011
• 年：2011
• 卷：83
• 期：1
• 页码：499-503
• 全文大小：744 K

文摘

Two new one-dimension copper(II) coordination polymers [CuL₂(NCS)₂]_n (1) and [CuL₂(NO₃)₂]_n (2) (L = (C₅H₄N)C(CH₃)N¨CN(CH₃)C(C₅H₄N)) have been synthesized and characterized by IR, elemental analysis, TG technique and X-ray crystallography. Each Cu(II) atom has a distorted octahedral N₆ (1) or N₄O₂ (2) environment with four pyridyl N atoms from four ligands and two N atoms from two NCS^{?/sup> anions for polymer 1 or two O atoms from two NO₃?/sup> anions for polymer 2, respectively. A pair of bis-monodentate bridging ligands links two Cu(II) centers to form one dimension chain structure containing bimetallic 22-membered macrometallacyclic rings. 1D chain is held together with its neighboring ones via C¨CH?S hydrogen bonds for 1 and C¨CH?O hydrogen bonds, C¨CH?¦Ð interactions for 2 to form a 3D supramolecular structure, respectively. The luminescent properties of the polymers 1 and 2 were investigated in the solid state at room temperature.}