中国稀土学报(英文版)
中國稀土學報(英文版)
중국희토학보(영문판)
JOURNAL OF RARE EARTHS
2001年
1期
1-5
,共5页
朱文祥%苟宝迪%张永安%李言%陈学安
硃文祥%茍寶迪%張永安%李言%陳學安
주문상%구보적%장영안%리언%진학안
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….
