Synthesis and Structural Characterization of Adduct ［La(NO3)3*4H2O］*2(BQEB)
来源期刊：JOURNAL OF RARE EARTHS2001年第1期
论文作者：陈学安 朱文祥 张永安 李言 苟宝迪
Abstract: New podand compound 1,2-bis (8′-quinolyloxy ethoxy) benzene (BQEB) was prepared. A lanthanum adduct with BQEB was synthesized and its structure was characterized by X-ray crystal analysis using Mo Kα radiation (λ＝0.071073 nm). Crystal data: space group C2/c, Z＝4, a＝1.8636(3) nm, b＝2.0036(3) nm, c＝1.5186(3) nm, α＝90.00°, β＝91.452(14)°, γ＝90.00°, Rf＝0.0373 for 6520 observed data. In the crystal structure the La3+ is ten-coordinated by three NO-3 and four H2O. Two podand molecules link to the coordination core via O—H…N (average O…N＝0.2766(3) nm) hydrogen bonds. The adduct has a one-dimensional chain sandwich structure consisting of every two podand molecules with a ［La(NO3)3*4H2O］ as a bridge. The whole crystal is packed in a manner of…LLMLLMLL….
陈学安1，朱文祥2，张永安2，李言1，苟宝迪2
(1.Institute of Chemistry, Chinese Academy of Sciences,;
2.Department of Chemistry, Beijing Normal University,)
Abstract:New podand compound 1,2-bis (8′-quinolyloxy ethoxy) benzene (BQEB) was prepared. A lanthanum adduct with BQEB was synthesized and its structure was characterized by X-ray crystal analysis using Mo Kα radiation (λ＝0.071073 nm). Crystal data: space group C2/c, Z＝4, a＝1.8636(3) nm, b＝2.0036(3) nm, c＝1.5186(3) nm, α＝90.00°, β＝91.452(14)°, γ＝90.00°, Rf＝0.0373 for 6520 observed data. In the crystal structure the La3+ is ten-coordinated by three NO-3 and four H2O. Two podand molecules link to the coordination core via O—H…N (average O…N＝0.2766(3) nm) hydrogen bonds. The adduct has a one-dimensional chain sandwich structure consisting of every two podand molecules with a ［La(NO3)3*4H2O］ as a bridge. The whole crystal is packed in a manner of…LLMLLMLL….
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