A series of POM-based entangled frameworks with the rigid ligand 1,4-bis (1-imidazolyl)benzene and different isomers of octamolybdate

作者：Zang, Hong-Ying; Du, Dong-Ying; Li, Shun-Li; Lan, Ya-Qian^*; Yang, Guang-Sheng; Yan, Li-Kai; Shao, Kui-Zhan; Su, Zhong-Min

来源：Journal of Solid State Chemistry, 2011, 184(5): 1141-1147.

DOI：10.1016/j.jssc.2011.02.026

• Polyoxometalates
• Octamolybdate
• Entanglement
• Semiconductor
• Transition-metal ions

With BIMB ligand, we have successfully obtained and characterized three novel entangled inorganic-organic hybrid compounds by choosing different metal ions, that is, [Ni(BIMB)(2)(gamma-Mo(8)O(26))(0.5)]center dot 3H(2)O (1), [Zn(BIMB)(2)(gamma-Mo(8)O(26))(0.5)] (2), and [Cu(3)(BIMB)(4)(H(2)O)(delta-Mo(8)O(26))Cl(2)]center dot 3H(2)O (3) (where BIMB = 1,4-bis(1-imidazolyl)benzene). Compound 1 is a 2-fold interpenetration 4-connected 3D framework with the short Schlafli symbol of (4 x 6(4) x 8)2(4(2) X 6(2) X 8(2)), in which octamolybdate anion shows gamma-isomer; 2 exhibits a (5,6)-connected 3D self-penetrating topological motif with the short Schlafli symbol of (4 x 5(7) x 6(2))(2)(4(2) x 5(11) x 7(2)) and 3 shows a (4,6)-connected self-penetrating 3D framework with the short Schlafli symbol of (4(2). 5(2). 6. 7) (4(4). 5. 6(9).8) (5(4).6(2)) whose octamolybdate has delta-isomer. In addition, the optical band gaps of these three compounds have been measured, which are 2.98 eV for 1, 3.42 eV for 2, and 2.88 eV for 3. Moreover, 2 has photoluminescent property, which can be attributed to ligand-to-metal charge-transfer (LMCT) band.

• 出版日期2011-5
• 单位东北师范大学