Effect of Organic Polycarboxylate Ligands on the Structures of a Series of Zinc(II) Coordination Polymers Based on a Conformational Bis-triazole Ligand

详细信息    查看全文

• 作者：Yajuan Mu ; Gang Han ; Zhen Li ; Xiaoting Liu ; Hongwei Hou ; Yaoting Fan
• 刊名：Crystal Growth & Design
• 出版年：2012
• 出版时间：March 7, 2012
• 年：2012
• 卷：12
• 期：3
• 页码：1193-1200
• 全文大小：517K
• 年卷期：v.12,no.3(March 7, 2012)
• ISSN：1528-7505

文摘

To explore the influence of six structurally different polycarboxylate ligands H₂L¹ to H₄L⁶ in the system Zn(II)/btmx, six coordination polymers, formulated as [Zn(btmx)(L¹)]_n (1), {[Zn(btmx)(L²)]路2H₂O}_n (2), {[Zn(btmx)(L³)]路1.5H₂O}_n (3), [Zn(btmx)(L⁴)]_n (4), {[Zn₄(btmx)₃(L⁵)₄(H₂O)₂]路4H₂O}_n (5), and [Zn(btmx)(H₂L⁶)]_n (6), have been obtained under similar conditions (btmx = 1,4-bis(1,2,4-triazol-1-ylmethyl)-2,3,5,6-tetramethylbenzene, H₂L¹ = 1,3-benzenedicarboxylic acid, H₂L² = 1,4-benzenedicarboxylic acid, H₂L³ = 1,3-adamantanedicarboxylic acid, H₂L⁴= 1,3-adamantanediacetic acid, H₂L⁵ = 4,4鈥?oxidibenzoic acid, and H₄L⁶ = 3,3鈥?4,4鈥?benzophenone tetracarboxylic acid). The structure determination reveals that complexes 1 and 4 are two-dimensional (2D) layered networks and exhibit typical (4,4) topological nets. Complex 2 shows an undulating 2D (4,4)-network with 2-fold interpenetration. Complex 3 possesses a three-dimensional (3D) 3-fold interpenetrating 4-connected framework of 6⁶-dia topology. Both 5 and 6 have different 3D interpenetrated motifs generated by 2D 鈫?3D interpenetration. Complex 5 belongs to a 3D framework built from the interpenetration of 2D bilayers in an inclined mode, while 6 involves a parallel interpenetration between the adjacent 2D (4,4) layers. This work markedly indicates that the effect of polycarboxylate ligands is significant in the construction of these networks.