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

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)3750-3755
Number of pages6
JournalEuropean Journal of Inorganic Chemistry
Issue number24
DOIs
Publication statusPublished - 2010 Aug 1

All Science Journal Classification (ASJC) codes

  • Inorganic Chemistry

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