Citation:
Hu Ninghai, Li Zhenxiang, Zhou Qinglian, Yang Binghu, Jin Zhongsheng, Ni Jiazuan. CRYSTAL STRUCTURES OF PrCI3 AND SmCl3 COMPLEXES WITH 15-CROWN-5[J]. Chinese Journal of Applied Chemistry,
;1987, 4(6): 22-26.
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The crystal structures of PrCl3·C10H20O5 and SmCl13·C10H20O5 have been determined, by X-ray diffraction analysis. The complexes are. isomorph, and monoclinic with space group P21/c and lattice parameters:a=8.167(2)[8.129(7)], b=14.225(3)[14.176(7)], c=14.208(4[14.117(5)]Å, β=104.78(2)[104.62(5)]° and Z=4. The rare earth ion is bonded to the three chlorine atoms on one side and to five oxygen atoms of the crown ether on the opposite side forming an irregular 8-coordinate polyhedron. Mean bond lengths of Ln-O 2.606[2.566]Å, of Ln-Cl, 2.714[2.666]Å, they are shorter than those in higher coordinate complexes.
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