Organoimido-derivatized hexamolybdates with a remote carboxyl group: syntheses and structural characterizations.
Organoimido-derivatized hexamolybdates with a remote carboxyl group: syntheses and structural characterizations.
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DOI：
10.1021/ic4005278
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发表时间：
2013-05
影响因子：
4.6
通讯作者：
G. Sima;Qiang Li;Yi Zhu;Chunlin Lv;Rao Naumaan Nasim Khan;J. Hao;Jin Zhang;Yongge Wei
中科院分区：
文献类型：
--
作者：
G. Sima;Qiang Li;Yi Zhu;Chunlin Lv;Rao Naumaan Nasim Khan;J. Hao;Jin Zhang;Yongge Wei
已经合成了四种新的含有远程羧基的六钼酸盐的有机酰亚胺衍生物：[Bu4N]2[Mo6O18（N-C6H4-3-COOH）]（1），[Bu4N]2[Mo6O18（N-C6H4-2-CH3-4-COOH）]（2），[Bu4N]2[Mo6O18（N-C6 H4 -2-CH 3 -5-COOH）]（3）和[Bu 4 N]2[Mo 6 O 18（N-C_6 H_4 -2-CH_3 -3-COOH）]（4）分别与3-氨基苯甲酸、4-氨基-3-甲基苯甲酸、3-氨基-4-甲基苯甲酸和3-氨基-2-甲基苯甲酸作为亚胺释放剂。通过IR、UV-vis、（1）H NMR、ESI-MS和单晶X-射线衍射等技术对它们的结构进行了表征。氢键相互作用在这些化合物的固态超分子组装中起着重要的作用。虽然引入的有机配体彼此相似，但它们的超分子组装行为却截然不同。对于化合物1，二聚体结构是通过羧基与两个相邻簇阴离子的POM簇之间的氢键形成的。对于化合物2，通过簇阴离子的POM簇与羧基之间的氢键形成一维链状结构。对于化合物3，二维平面结构是通过两种类型的氢键之间的芳环和POM簇阴离子形成的。对于化合物4，两种不同取向的簇阴离子的芳环与POM簇之间通过三种类型的氢键作用形成了一维加二维结构。
Four novel organoimido derivatives of hexamolybdate containing a remote carboxyl group have been synthesized: [Bu4N]2[Mo6O18(N-C6H4-3-COOH)] (1), [Bu4N]2[Mo6O18(N-C6H4-2-CH3-4-COOH)] (2), [Bu4N]2[Mo6O18(N-C6H4-2-CH3-5-COOH)] (3), and [Bu4N]2[Mo6O18(N-C6H4-2-CH3-3-COOH)] (4) with 3-aminobenzoic acid, 4-amino-3-methylbenzoic acid, 3-amino-4-methylbenzoic acid, and 3-amino-2-methylbenzoic acid as the imido-releasing agents, respectively. Their structures have been characterized by IR, UV-vis, (1)H NMR, ESI-MS, and single-crystal X-ray diffraction techniques. Hydrogen bonding interactions play an important role in the supramolecular assemblies of these compounds in the solid state. Although the incorporated organic ligands are similar to each other, their supramolecular assembly behaviors are quite different. For compound 1, the dimer structure is formed via hydrogen bonding between the carboxyl group and the POM cluster of two neighboring cluster anions. For compound 2, the 1D chain structure is formed via hydrogen bonding between the carboxyl groups and the POM clusters of the cluster anions. For compound 3, the 2D plane structure is formed via two types of hydrogen bonding between the aromatic rings and the POM clusters of the cluster anions. For compound 4, the 1D plus 2D structures are formed via three types of hydrogen bonding between the aromatic rings and the POM clusters of the two types of cluster anions with different orientations.