Crystal engineering of three net-to-net intersecting metal-organic frameworks from two comparable organic linking squares

Tien Wen Tseng, Tzuoo Tsair Luo, Cheng Chuan Tsai, Jing Yun Wu, Hui Lien Tsai, Kuang Lieh Lu

研究成果: Article同行評審

14 引文 斯高帕斯(Scopus)

摘要

The syntheses and structures of three mixed-ligand metal- organic frameworks (MOFs), {[M2(btec)(bpym)(H2O)4]. 4H2O}n [M = Cu (1), Ni (2)] and [Zn4(btec) 2(bpym)(H2O)6]n (3) (btec = benzene-1,2,4,5-tetracarboxylate, bpym = 5,5'-bipyrimidine) are described. MOFs 1 and 2 feature 3D gridtype frameworks with a cds-type topology, which are comprised of two mutually intersecting M(btec)-based and M(bpym)-based 4 4-sql layers. MOF 3 consists of an anionic 3D (4,4)-connected pts network that is intersected by cationic hydrogen-bonded 44-sql layers, [(H2O)3Zn(μ-anti-η2-bpym)- Zn(H2O)3]4+, thereby giving rise to a 3D network. The struc-tural diversities between the two types of MOF architectures can be attributed to the coordination geometry preference of the metal ions (square planar for CuII and NiII and tetrahedral for ZnII). In addition, temperature-controlled X-ray powder diffraction studies reveal that MOF 1 possesses reversible desorption/ sorption properties upon the removal/uptake of water molecules. The magnetic behavior of 1 was investigated in the 2-300 K range. The data indicate the presence of weak antiferromagnetic interactions between the two CuII metal centers that are bridged by a pyrimidine ring.

原文English
頁(從 - 到)3750-3755
頁數6
期刊European Journal of Inorganic Chemistry
發行號24
DOIs
出版狀態Published - 2010 8月

All Science Journal Classification (ASJC) codes

  • 無機化學

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