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化学学报
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化学学报 ›› 2007, Vol. 65 ›› Issue (14): 1381-1384. 上一篇    下一篇

研究简报

新型含2-噁唑啉基三角架配体-银(I)一维配位聚合物的合成与结构

黄永清1, 周夏英1, 沈忠良1, 刘光祥1, 余金权2, 孙为银*,1   

  1. (1南京大学化学化工学院 配位化学研究所 配位化学国家重点实验室 南京 210093)
    (2 Department of Chemistry MS015, Brandeis University, Waltham, Massachusetts 02454-9110, U.S.A.)
  • 投稿日期:2006-12-21 修回日期:2007-02-28 发布日期:2007-07-28
  • 通讯作者: 孙为银

Synthesis and Crystal Structure of a Novel Ag(I) 1D Coordination Polymer with a 2-Oxazolinyl-containing Tripodal Ligand

HUANG Yong-Qing1; ZHOU Xia-Ying1; SHEN Zhong-Liang1; LIU Guang-Xiang1; YU Jin-Quan2; SUN Wei-Yin*,1   

  1. (1 State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China)
    (2 Department of Chemistry MS015, Brandeis University, Waltham, Massachusetts 02454-9110 USA)
  • Received:2006-12-21 Revised:2007-02-28 Published:2007-07-28
  • Contact: SUN Wei-Yin

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通过含2-噁唑啉基三角架配体1,3,5-三(2-噁唑啉基)苯(L)与三氟醋酸银反应合成了配合物[Ag4(L)2(CH3CN)2(CF3CO2)4]n (1), 并利用元素分析、电喷雾质谱、X射线单晶衍射等方法对其进行了表征. 晶体结构解析结果显示配合物1属三斜晶系, 空间群P-1, a＝0.83731(6) nm, b＝1.22828(9) nm, c＝1.33997(10) nm, α＝102.9760(10)°, β＝107.3050(10)°, γ＝93.8600(10)°, Z＝1, R＝0.0365, wR2＝0.0929. 该配合物是由[Ag4(L)2(CF3CO2)2]2＋笼状结构单元通过另外两个三氟醋酸根双桥连形成的一维链状结构. 相邻的链间通过C—H…O氢键进一步扩展为二维网状结构. 电喷雾质谱研究结果显示在实验条件下, 溶液中配合物1是以聚合状态存在的.

关键词: 银配合物, 噁唑啉, 配位聚合物, 晶体结构, 电喷雾质谱

A new Ag(I) complex [Ag4(L)2(CH3CN)2(CF3CO2)4]n (1) was synthesized by the reaction of a 2-oxazolinyl-containing tripodal ligand 1,3,5-tris(2-oxazolinyl)benzene (L) with a silver(I) trifluoroacetate and characterized by means of elemental analysis, electrospray mass (ES-MS) spectroscopy and single crystal X-ray diffraction. The results of the crystallographic analysis showed that the complex 1 is triclinic, with space group P-1, a＝0.83731(6) nm, b＝1.22828(9) nm, c＝1.33997(10) nm, α＝102.9760(10)°, β＝107.3050(10)°, γ＝93.8600(10)°, Z＝1, R＝0.0365, wR2＝0.0929. The complex consists of [Ag4(L)2- (CF3CO2)2]2＋ cage-like subunits, which are further connected into 1D infinite chain by two bridging CF3COO－ anions. The 1D chains are further linked by C—H…O hydrogen bonds to form 2D network structure. The results of the ES-MS measurements suggested the polymeric structure of the complex in solution under the ES mass spectroscopy experimental conditions.

Key words: silver(I) complex, oxazoline, coordination polymer, crystal structure, electrospray mass spectrometry