Chinese Journal of Applied Chemistry

Chinese Journal of Applied Chemistry ›› 1986, Vol. 0 ›› Issue (1): 46-50.

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THE MOLECULAR AND CRYSTAL STRUCTURE OF THE COMPLEX OF AZACROWN(2,2)WITH EUROPIUM NITRATE

Liu Shichang1, Yang Gangdi2, Fan Yuguo2, Jin Zhongsheng3, Jin Songchun3, Zhu Tianpei3   

  1. 1. Department of Chemistry, Inner Mongolia Normal University, Huhehaote;
    2. Institute of Theoretical Chemistry, Jilin University, Changchun;
    3. Changchun Institute of Applied Chemistry, Academia Sinica
  • Received:1985-07-29 Revised:1985-09-18 Published:1986-02-10 Online:1986-02-10

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Abstract: The crystals of the complex of azacrown (2,2) with Eu(NO3)3 are monoclinic sys-tem with space group P21/n and parameters of unit cell a=16.2745(18), b=11.5237(25),c=12.5658(60)Å, β=112.180(34)°, Z=4.The diffraction data were collected on the Nico-let XRD R3 four-circle diffractometer using MoKα radiation. Its structure was solved by heavy-atom method. The structure parameters were refined by means of block-diagonal matrix least-square method, R=0.042. The coordination number of the europium ion is ten. The europium ion is in the mean plane of the ring and linked to 4 oxygen atoms,2 nitrogen atoms of the crown and 2 nitrates forming cation part of the complex. Two nitrates are localized in each side of the crown ring.

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