Ni(II) Coordination Polymers Constructed from the Flexible Tetracarboxylic Acid and Different N-Donor Ligands: Structural Diversity and Catalytic Activity

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• 作者：Lu Liu ; Chao Huang ; Xiaonan Xue ; Ming Li ; Hongwei Hou ; Yaoting Fan
• 刊名：Crystal Growth & Design
• 出版年：2015
• 出版时间：September 2, 2015
• 年：2015
• 卷：15
• 期：9
• 页码：4507-4517
• 全文大小：715K
• ISSN：1528-7505

文摘

To seek the effect that condition of the complexes has on the manufacture of the biaryl compounds, seven Ni(II) complexes, namely, {[Ni(L)_0.5(bpa)(H₂O)]路2H₂O}_n (1), {[Ni₂(L)(dpp)₂(H₂O)]路4H₂O}_n (2), {[Ni(L)_0.5(pbmb)(H₂O)]路H₂O}_n (3), {[Ni₂(L)(bmp)₂(H₂O)]路7H₂O}_n (4), {[Ni(L)_0.5(pbib)_1.5]路2H₂O}_n (5), {[Ni₂(L)(pbib)_1.5]路3H₂O}_n (6), and [Ni(L)_0.5(beb)₂(H₂O)]_n (7) (bpa = 1,2-bis(4-pyridyl)ethane, dpp = 1,3-di(4-pyridyl)propane, pbmb = 1,1鈥?(1,3-propane)bis(2-methylbenzimidazole), bmp = 1,5-bis(2-methylbenzimidazol) pentane, pbib = 1,4-bis(imidazol-1-ylmethyl)benzene, beb = 1,4-bis(2-ethylbenzimidazol-1-ylmethyl)benzene), have been gained through hydro(solvo)thermal reactions of 5,5鈥?(hexane-1,6-diyl)-bis(oxy)diisophthalic acid ligand (H₄L) with Ni(II) metal ions under the regulation and control of six N-donor ligands. 3-fold interpenetrating complex 1 belongs to a (4,4)-connected 3D bbf net with a vertex symbol of (6⁴路8²)(6⁶) topology. 3-fold interpenetrating complex 2 presents a (4,4,4)-connected 3D bbf net with a Schl盲fli symbol of (6⁶)₂(6⁴路8²) topology. 3 features a (3,4)-connected 3,4L13 topology with a Schl盲fli symbol of (4路6²)(4²路6²路8²) topology. 4 possesses a (4,4,4)-connected mog Moganite 3D network fabric, and the vertex symbol is (4路6⁴路8)₂(4²路6²路8²). 5 takes on a (4,5)-connected architecture, and the point symbol is (4路6⁹)(4²路6⁶路8²). 6 is a (4,7)-connected framework, and the Schl盲fli symbol is (4⁵路5)(4⁷路5³路6¹¹). 7 has a (4,4)-connected 4,4L28 topology, and the point (Schl盲fli) symbol is (4²路6⁴)(4路6⁴路8). A systematic structural comparison of 1鈥?b>7 signifies that their frameworks can be regulated through varied conformations of the flexible H₄L ligand and diverse N-donor ligands. Between the proximal Ni(II) ions, the variable-temperature (2鈥?00 K) magnetic susceptibilities of 6 display overall weak antiferromagnetic coupling. In the complexes-catalyzed homocoupling reaction of iodobenzene, 3, 5, 6, and 7 have been verified to be effectual catalysts for the synthesis of the biaryl compounds.