Syntheses and Crystal Structures of a Cadmium(II) and a Zinc(II) Complexes with the Flexible Ligand1-Acetic Acid-2,2’-biimidazole

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摘要 Reactions of NaAcebiim (NaAcebiim = 1-acetic acid-2, 2'-biimidazole monoso- dium salt) and cadmium or zinc nitrate produce two supramolecular architectures, namely, 1D [Cd(Acebiim)(NO₃)(H₂O)]_n(1) and 0D [Zn(Acebiim)₂(H₂O)₂]·2H₂O (2) in acidic aqueous solutions. Single-crystal X-ray diffraction analysis reveals that complex 1 crystallizes in the triclinic system, space group Pī, and 2 is of monoclinic system, space group P2₁/n. In 1, two nitrate groups link two Cd(II) ions forming [Cd₂(NO₃)₂(H₂O)₂] as secondary building units that are interconnected by the Acebiim^- ligand into an infinite ladder. In 2, the hydrogen-bonded synthon R₂²(16) between the N-H moieties and carboxylic acid link [Zn(Acebiim)₂(H₂O)₂], generating a 1D-extended ribbon. Moreover, hydrogen bonds and π-π interactions further stabilize the 3D supramolecular architecture.

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	桑瑞利
	徐立

关键词 ： crystal structure, supramolecular architecture, hydrogen bond, biimidazole, organic-inorganic hybrid composite

Abstract：Reactions of NaAcebiim (NaAcebiim = 1-acetic acid-2, 2'-biimidazole monoso- dium salt) and cadmium or zinc nitrate produce two supramolecular architectures, namely, 1D [Cd(Acebiim)(NO₃)(H₂O)]_n(1) and 0D [Zn(Acebiim)₂(H₂O)₂]·2H₂O (2) in acidic aqueous solutions. Single-crystal X-ray diffraction analysis reveals that complex 1 crystallizes in the triclinic system, space group Pī, and 2 is of monoclinic system, space group P2₁/n. In 1, two nitrate groups link two Cd(II) ions forming [Cd₂(NO₃)₂(H₂O)₂] as secondary building units that are interconnected by the Acebiim^- ligand into an infinite ladder. In 2, the hydrogen-bonded synthon R₂²(16) between the N-H moieties and carboxylic acid link [Zn(Acebiim)₂(H₂O)₂], generating a 1D-extended ribbon. Moreover, hydrogen bonds and π-π interactions further stabilize the 3D supramolecular architecture.

Key words： crystal structure supramolecular architecture hydrogen bond biimidazole organic-inorganic hybrid composite

收稿日期: 2013-11-29 出版日期: 2014-06-19

基金资助:This work was supported by the National Natural Science Foundation of China (No. # 21003125, 21073190) and the Natural Science Foundation of Fujian Province (2010 J01057)

通讯作者: 徐立: xli@fjirsm.ac.cn E-mail: xli@fjirsm.ac.cn

作者简介: 徐立: xli@fjirsm.ac.cn

引用本文:

桑瑞利;徐立. Syntheses and Crystal Structures of a Cadmium(II) and a Zinc(II) Complexes with the Flexible Ligand1-Acetic Acid-2,2’-biimidazole[J]. 结构化学, 2014, 33(8): 1147-1153.
SANG Rui-Li;XU Li. Syntheses and Crystal Structures of a Cadmium(II) and a Zinc(II) Complexes with the Flexible Ligand1-Acetic Acid-2,2’-biimidazole. CHINESE JOURNAL OF STRUCTURAL CHEMISTRY, 2014, 33(8): 1147-1153.

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http://manu30.magtech.com.cn/jghx/CN/ 或 http://manu30.magtech.com.cn/jghx/CN/Y2014/V33/I8/1147

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