Citation: ZHANG Fang-Wei, ZHOU Yan-Fang, DONG Jin-Qiao, LIU Bai-Zhan, ZHENG Sai-Jing, CUI Yong. Synthesis and Crystal Structure of a Novel Chiral 3D Metal-organic Framework Based on an N-methyl Substituted Salan Ligand[J]. Chinese Journal of Structural Chemistry, ;2014, 33(8): 1154-1158.
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A chiral 3D metal-organic framework [CdL]·DMSO·H2O (1) was constructed by an N-methyl substituted salan ligand (H2L), and characterized by elemental analyses, IR, TGA, powder XRD and single-crystal X-ray crystallography. 1 crystallizes in the chiral hexagonal space group P6522 with a=b=12.2175(3), c=51.450(3) Å, V=6650.9(4) Å3, Z=6, Mr=883.45, Dc=1.323 g·cm-3, F(000)=2760, λ(CuKα)=1.54178 Å, μ=4.771 mm-1, GOOF=1.041, R=0.0313 for 3901 observed reflections with I>2σ(I) and wR=0.0773. 1 consists of three identical sets of independent 3D frameworks interpenetrated with each other. In each set of such 3D frameworks, one half of the monomer (CdL)1/2 as the building unit forms double antiparrel helical chains which are further bridged together by other (CdL)1/2 units from adjacent helical chains. All CdL units in 1 adopt Δ geometry. DMSO and water guest molecules are found in the gap of the interpenetrated frameworks.
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Keywords:
- metal-organic framework,
- chirality,
- metallosalan,
- crystal engineering
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