The carboxylate groups are bonded to the samarium ion in four modes: (1) mondentate (2) bidentate chelating, (3) bidentate bridging, (4) tridentate chelating-bridging. The crystal structure of Sm(BA)_3bipy_2 is monoclinic with space group P2(1)/n, eight coordinate with a trigondodecahedron.
羧基基团与钐离子的配位方式各有不同,主要包括四种:(1)单齿配位;(2)双齿螯合配位;(3)桥联双齿配位;(4)桥联三齿配位。
参考来源 - 钐芳香族羧酸配合物的合成、晶体结构、热分解反应动力学的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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