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Metal-organic Frameworks Based on the [1,1':3',1''-terphenyl]-3,3'',5,5''-tetracarboxylic Acid Ligand: Syntheses, Structures and Magnetic Properties

Metal-organic Frameworks Based on the [1,1':3',1''-terphenyl]-3,3'',5,5''-tetracarboxylic Acid Ligand: Syntheses, Structures and Magnetic Properties

Xiaofeng Lv, Lu Liu, Chao Huang, Li'an Guo, Jie Wu, Hongwei Hou, Yaoting Fan

Dalton Trans. 2014 Nov 7;43(41):15475-81.

PMID: 25189532

Abstract:

The solvothermal reactions of [1,1':3',1''-terphenyl]-3,3'',5,5''-tetracarboxylic acid (H4TPTA) with transition metal cations afforded five novel coordination polymers in the presence of three pyridine ligands (4,4'-bipy = 4,4'-bipyridine, 2,2'-bipy = 2,2'-bipyridine and phen = 1,10-phenanthroline), namely [M(TPTA)0.5(4,4'-bpy)0.5(H2O)2]n (M = Co for (1), Ni for (2)), {[Mn2(TPTA)(2,2'-bpy)H2O]·1.5H2O}n (3), and [M(H2TPTA)(phen)]n (M = Mn for (4), Co for (5)). Their structures were determined by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, IR spectroscopy, powder X-ray diffraction (PXRD), and thermogravimetric (TG) analyses. Polymers 1 and 2 are isomorphous and exhibit 3D 4-fold interpenetrated networks with the point Schläfli symbol of (4(2)·10(4)) (4·10(2)). Polymer 3 shows a 2D layer framework. Polymers 4 and 5 are also isomorphous and each displays a one-dimensional (1D) chain, which further forms a 2D supramolecular architecture via inter-chain π···π interactions. Moreover, variable-temperature magnetic susceptibilities of polymers 3-5 exhibit overall weak antiferromagnetic coupling between the adjacent M(II) ions.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP921619898	[1,1':4',1″]Terphenyl- 3,3″,5,5″-tetracarboxylic acid		921619-89-8	Price

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