期刊刊名：元培學報 　 卷期：23期

篇名出版日期：2017年12月1日

作者：Fwu-Ming Shen, Shie-Fu Lush,沈福銘,駱詩富

語言：English

關鍵字：Hydrothermal synthesis, Pyridine-3,5-dicarboxylate, Lanthanum (Ⅲ) Complexes, Hydrogen bonding,水熱合成,吡啶-3,5－雙羧酸,鑭(Ⅲ)－錯合物,氫鍵

被點閱次數：1次

閱讀時間：1380sec

摘要：
The polymer compound, [La₂(C₇H₃NO₄)₃(H₂O)₃]n, contains two independent LaⅢions, three pyridine-3,5-dicarboxylate anions and three coordinated water molecules in which two La(Ⅲ) ions are bridged by carboxylate and forms dinuclear unit. Each pyridine-3,5-dicarboxylate anion affords a four-connecting nodes. Around nine-coordinated LaⅢ cation (La1) is completed by nine oxygen atoms from six pyridine-3,5-dicarboxylate and two aqua, forming a square-face capped square antiprism. Other seven-coordinated LaⅢ cation (La2) is coordinated with seven oxygen atoms from six pyridine-3,5-dicarboxylate and one aqua, forming a 4,4'-bicapped trigonal prism. There are classical hydrogen bondings(O—H···O and O—H···N) and weak non-classical hydrogen bondings (C—H···O) is observed in the crystal structure. The crystal structure is further consolidated by π···π stacking between nearly parallel pyridine rings of adjacent pyridine-3,5-dicarboxylate ligands [shortest centroid-centroid distance between π···π is 3.7749 (15)Å, dihedral angle =5.78 (12)°].

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