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A new C_2-symmetric TADDOL-based ligand H_4L was designed and synthesized from readily available tartaric acid and was used to construct a novel TADDOL-based chiral metal-organic framework {[Co_2L(DMA)(H_2O)_5]·2DMA}n 1(DMA = N,N?-dimethylacetamide). It was characterized by single-crystal and powder X-ray diffraction, Fourier-transform infrared spectra(FTIR), solid-state circular dichroism(CD) and thermal gravimetric analysis(TGA). 1 crystallizes in the chiral orthorhombic space group P212121 with a = 9.7060(8), b = 15.5661(1), c = 44.564(3) ?, V = 6732.9(9) ?~3, Z = 4, M_r = 1394.08, Dc = 1.375 g/cm~3, F(000) = 2888, GOOF = 1.032, the final R = 0.0607 and wR = 0.1582 for 21374 observed reflections with I > 2σ(I). Each Co_2 cluster in 1 is linked by three ligands and each ligand is coordinated to three Co_2 clusters with one free carboxylate group, thus generating a 2D network. These 2D networks are further extended into a 3D supramolecule framework by the hydrogen bonding interactions(O–H…O) in an A-B-A-B stacking mode. Additionally, the photoluminescence of 1 and H_4L were also investigated.
A new C_2-symmetric TADDOL-based ligand H_4L was designed and synthesized from readily available tartaric acid and was used to construct a novel TADDOL-based chiral metal-organic framework {[Co_2L (DMA) (H_2O) _5] · 2DMA} n 1 (DMA = N, N? -dimethylacetamide). It was characterized by single-crystal and powder X-ray diffraction, Fourier-transform infrared spectra (FTIR), solid-state circular dichroism (CD) and thermal gravimetric analysis (TGA). 1 crystallizes in the chiral orthorhombic space group P212121 with a = 9.7060 (8), b = 15.5661 (1), c = 44.564 (3) ?, V = 6732.9 (9)? -3, Z = 4, M_r = 1394.08, Dc = 1.375 g / cm ~ 3, F (000) = 2888, GOOF = 1.032, the final R = 0.0607 and wR = 0.1582 for 21374 were reflections with I> 2σ (I). Each Co_2 cluster in 1 is linked by three ligands and each ligand are coordinated to three Co_2 clusters with one free carboxylate group, thereby generating a 2D network. These 2D networks are further extended into a 3D supramolecule framework by the hydrogen bonding interactio ns (O-H ... O) in an A-B-A-B stacking mode.