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The synthesis and crystal structure of heteronuclear complex of lanthanide with sulfo-salicylic acid [Na3YLa2(C7H3SO6)4.26H2O]n

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Chinese Journal of Chemistry 1995年第2期13卷 150-155页

作者： SUN, Hong-Ye HUANG, Chun-Hui GAN, Liang-Bing XU, Guang-XianState Key Laboratory of Rare Earth Material Chemistry and Applications, Peking University, Beijing 100871, ChinaMA, Zhe-Sheng SHI, Ni-Cheng China University of Geoscience, Beijing 100083,China China University of Geoscience Beijing 100083 China

The titled complex has been synthesized by the reaction of sodium sulfo-salicylate with lanthanum and yttrium perchlorate. The crystal structure has been determined by single crystal X-ray diffractometry. The crystal is monoclinic with space group C2/c. The unit cell parameters are as follows: a=16.289(8), b=18.323(8), c=22.044(8) A, β=106.34(2)°, V=6314(6) A3, Z=4 and Dc=1.764 g/cm3. The structure was solved by direct method. The least-square refinement based on 3776 observed reflections [F > 6σ(F)] converged to a final R=8.6% and F(000) is 3548. Yttrium ion with eight-coordinate is located in central of the molecule, the two lanthanum ions with ten-coordinate are located at the two sides of yttrium ion. There are two positions for Na in the molecule, one is in the C2 axis with six coordinate, the other one is in a general position with five-coordinate.

关键词： Crystal structure heteronucleax complex lanthanide elements sulfo-salicylic acid.

Hendecanuclear [Cu_(6)Gd_(5)] magnetic cooler with high molecular symmetry of D_(3h)

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Chinese Chemical Letters 2021年第2期32卷 838-841页

作者： Weipeng Chen Guojun Zhou Zhuolun Gou Sen Wang Yuanqi Zhai Tian Han Jurgen Schnack Yanzhen Zheng Shenzhen Research School and Frontier Institute of Science and Technology(FIST) State Key Laboratory for Mechanical Behavior of MaterialsMOE Key Laboratory for Nonequilibrium Synthesis of Condensed MatterXi'an Key Laboratory of Sustainable Energy and Materials Chemistry and School of ScienceXi'an Jiaotong University.Xi'an 710054China School of Chemistry and Chemical Engineering Shaanxi Normal UniversityXi'an 710119China Faculty of Physics Bielefeld UniversityD-33501 BielefeldPO Box 100131Germany

A new family of isostructural 3 d-4 f polymetallic complexes,formulated as [Cu_(6)Ln_(5)(μ_(3)OH)_(9)(C_(4)H_(8)O_(2)N)_(6)(C_(5)H_(4)ON)_(6)(H_(2)O)_(9)]·(ClO_(4))_(6)·(H_(2)O)_(22)(Ln=Pr,1;Nd,2;Sm,3;Eu,4;Gd,5),was successfully isolated through the simple hydrolysis reaction of 2-aminoisobutyric acid,2-hydroxypyridine,Cu(CH_(3)COO)_(2)·H_(2)O,and Ln(ClO_(4))_(3)·6 H_(2)***,the [Cu_(6)Ln_(5)] clusters with high molecular symmetry of D_(3h) are rare examples of2-aminoisobutyric acid-based 3 d-4 f *** successful theoretical modeling of 5 yielded that the Gd-Gd exchange is of order 0.2 K,whereas the Gd-Cu exchange is an order of magnitude *** data collected for comp lex 5 yield a magnetic entropy change(-ΔSm) of 19.6 J kg^(-1) K^(-1)<1 at 3 K and 7 T,which may be attributed to the weak magnetic interactions between the component metal ions.

关键词： Polymetallic complexes lanthanide elements Hydrothermal reaction Magnetic interactions Magnetic refrigeration

Syntheses and Properties of 2:18 Series Heteropolytungstophosphate Compounds with Lanthanon

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Journal of Rare Earths 1992年第1期10卷 5-8页

作者：王恩波黄如丹 Department of Chemistry Northeast Normal UniversityChangchun 130024China

Eleven heteropolytungstophosphate compounds with lanthanon having Dawson structure were prepared, Ln_2[P_2W_(18)O_(62)]·xH_2O(Ln=La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Yb).Their structures were studied by IR,UV,polarography ,... 详细信息

关键词： lanthanide elements Dawson structure Heteropolytungstophosphate compounds

Syntheses and Properties of K_17[Ln(CuW_11O_39)_2]·xH_2O

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Chemical Research in Chinese Universities 1990年第2期6卷 95-101页

作者： Wang Enbo, Wu Qingyin, Huang Rudan and Hu Changwen (Department of Chemistry, Northeast Normal University, Changchun)

Heteropoly-complexes K17[Ln(CuW11O39)2].xH2O(Ln = La, Ce, Pr, Nd, Sm, Eu, Gd, Dy) were prepared. The properties of the products were investigated by ion-exchange, conductometric titration, IR, UV and X-ray powder diffraction. The results show that the structure of the products is similar to that of U(a-Ge11O39)2 and consistent with the model proposed by Peacock.

关键词： lanthanide elements Heteropoly complexes Conductometric Titration