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Citation: Liu Shichang, Yang Gangdi, Fan Yuguo, Jin Zhongsheng, Jin Songchun, Zhu Tianpei. THE MOLECULAR AND CRYSTAL STRUCTURE OF THE COMPLEX OF AZACROWN(2,2) WITH EUROPIUM NITRATE[J]. Chinese Journal of Applied Chemistry, ;1986, 3(1): 46-50. shu

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

1.
1. Department of Chemistry, Inner Mongolia Normal University, Huhehaote;
2.
2. Institute of Theoretical Chemistry, Jilin University, Changchun;
3.
3. Changchun Institute of Applied Chemistry, Academia Sinica

Received Date: 29 July 1985
Available Online: 18 September 1985

The crystals of the complex of azacrown (2,2) with Eu(NO₃)₃ are monoclinic system 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 Nicolet XRD R3 four-circle diffractometer using MoK_α 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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