Role of Ethynyl-Derived Weak Hydrogen-Bond Interactions in the Supramolecular Structures of 1D, 2D, and 3D Coordination Polymers Containing 5-Ethynyl-1,3-benzenedicarboxylate
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- 作者：Jane V. Knichal ; William J. Gee ; Andrew D. Burrows ; Paul R. Raithby ; Chick C. Wilson
- 刊名：Crystal Growth & Design
- 出版年：2015
- 出版时间：January 7, 2015
- 年：2015
- 卷：15
- 期：1
- 页码：465-474
- 全文大小：677K
- ISSN：1528-7505
文摘
The influence of weak hydrogen bonds on the crystal packing of a series of heavy and transition metal coordination polymers synthesized using the ligand 5-ethynyl-1,3-benzenedicarboxylic acid (H2ebdc) has been evaluated. Five coordination polymers were prepared and crystallographically characterized. These comprise two 1D chains, [Pb(ebdc)(DMSO)2] (1) and [Pb(ebdc)(DMF)] (2), two 2D nets, [Cu3(ebdc)(H2O)1.5(MeOH)0.5]路6H2O (3) and [Pb2(ebdc)2(DMF)4]路H2O (4), and a single 3D framework, [HNEt3][Zn3(渭3-OH)(渭2-H2O)(ebdc)3(MeOH)0.67(H2O)0.33]路MeOH路1.33H2O (5). The crystal structure of the free acid ligand form, H2ebdc路H2O, is also reported. Within the lead(II) coordination structures, ethynyl-derived C鈥揌路路路O interactions are consistently found to provide the dominant influence over the crystal packing, as determined by solid-state structural analysis in combination with vibrational spectroscopy. The influence of weak hydrogen-bonding effects on the crystal packing of the transition metal coordination polymers that contain lattice water and methanol molecules was found to be far less prominent, which is interpreted in terms of the greater prevalence of strong hydrogen-bond donors and acceptors forming O鈥揌路路路O interactions within these crystalline lattices.