| Crystal Structure of[La(NO_3)_3(12-crown-4)-(H_2O)](12-crown-4) |
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| 作者姓名： | Mao Jiang-Gao Jin Zhong-Sheng Yu Feng-Lan |
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| 作者单位： | Laboratory of Rare Earth Chemistry and Physics，Changchun Institute of Applied Chemistry，Academia Sinica，Changchun 130022 |
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| 摘 要： | ＣｒｙｓｔａｌＳｔｒｕｃｔｕｒｅｏｆ［Ｌａ（ＮＯ_３）_３（１２－ｃｒｏｗｎ－４）－（Ｈ_２Ｏ）］（１２－ｃｒｏｗｎ－４）ＭａｏＪｉａｎｇ－Ｇａｏ；ＪｉｎＺｈｏｎｇ－Ｓｈｅｎｇ；ＹｕＦｅｎｇ－Ｌａｎ（ＬａｂｏｒａｔｏｒｙｏｆＲａｒｅＥａｒｔｈＣｈｅｍｉ?..
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Crystal Structure of[La(NO_3)_3(12-crown-4)-(H_2O)](12-crown-4) |
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| Mao Jiang-Gao, Jin Zhong-Sheng, Yu Feng-Lan.Crystal Structure of[La(NO_3)_3(12-crown-4)-(H_2O)](12-crown-4)[J].Chinese Journal of Structural Chemistry,1994(4). |
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| Authors: | Mao Jiang-Gao Jin Zhong-Sheng Yu Feng-Lan |
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| Abstract: | The crystal structure of crown ether-hydrogen bonded complex,La(NO3)3 (12-crown-4) ( H2O)] (12-crown-4) has been determined by X-ray method. The title complex C16H34LaN3O18 (Mr=695. 5) crystallized in orthorhombic Pnma with a=23. 495(8), b=13. 603(5),c=8. 474(3); V=2706(1); Z=4 ; Dc=1. 71 g/cm3; F(000)=1408, μ=17. 0 cm-1 (MOKα). The final R=0. 052 and Rw= 0. 054(unit weight) for 1367 observed reflections. The La( Ⅲ) ion is 11-coordinated by three nitrale anions, four oxygen atoms from a crown ligand and one O atom of a water molecule. The other crown molecule is hydrogen bonded wilh the coordinated water molecule. The imposed mirror plane in the structure made both crown ligands and one of nitrate groups severely disordered. |
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| Keywords: | crystal structure lanthanum nitrate crown ether complex hydrogen bonding |
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