A new C2-symmetric TADDOL-based ligand H4L was designed and synthesized from readily available tartaric acid and was used to construct a novel TADDOL-based chiral metal-organic framework {[Co2L（DMA）（H2O）5]·2D...A new C2-symmetric TADDOL-based ligand H4L was designed and synthesized from readily available tartaric acid and was used to construct a novel TADDOL-based chiral metal-organic framework {[Co2L（DMA）（H2O）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, Mr = 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 Co2 cluster in 1 is linked by three ligands and each ligand is coordinated to three Co2 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 H4L were also investigated.展开更多
Synthesis and ring-opening reaction of TADDOL analogue with cyclopropane as chiral backbone were described. A plausible ring-opening and carbonium ion rearrangement mechanism have been proposed.
A novel alkaline earth-based chiral metal-organic framework 1 {[Ba（1.5）L（μ-OH2）2（DMF）2（H2O）]·DMF·1.5 H2O}n was synthesized from C2-symmetric TADDOL-based ligand H4L and structurally characterized by...A novel alkaline earth-based chiral metal-organic framework 1 {[Ba（1.5）L（μ-OH2）2（DMF）2（H2O）]·DMF·1.5 H2O}n was synthesized from C2-symmetric TADDOL-based ligand H4L and structurally 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 monoclinic space group C2 with a = 43.5105（12）, b = 9.4781（3）, c = 15.5620（4） A°, β = 99.7770（10）o, V = 6324.5（3） A°^3, Z = 2, Mr = 1434.18 g/mol, Dc = 1.506 g/cm^3, F（000） = 2904, GOOF = 1.026, the final R = 0.0358 and w R = 0.0952 for 21747 observed reflections with I 〉 2σ（I）. Each Ba3 cluster in 1 is linked by eight ligands and each ligand with one coordination-free carboxyl oxygen, O（5）, is coordinated to four Ba3 clusters to generate a 3D network. In addition, the photoluminescence of 1 and H4L was also investigated.展开更多
基金supported by NSFC-21371119,21431004 and 21401128“973” Program(2014CB932102 and 2012CB8217)SSTC-14YF1401300
文摘A new C2-symmetric TADDOL-based ligand H4L was designed and synthesized from readily available tartaric acid and was used to construct a novel TADDOL-based chiral metal-organic framework {[Co2L（DMA）（H2O）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, Mr = 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 Co2 cluster in 1 is linked by three ligands and each ligand is coordinated to three Co2 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 H4L were also investigated.
基金founded by the National Natural Science Foundation of China(No.20472111).
文摘Synthesis and ring-opening reaction of TADDOL analogue with cyclopropane as chiral backbone were described. A plausible ring-opening and carbonium ion rearrangement mechanism have been proposed.
基金supported by NSFC-21371119,21431004,21401128,21522104,and 21620102001)“973”Program(Grants 2014CB932102 and 2016YFA0203400)the Shanghai“Eastern Scholar”Program SSTC-14YF1401300
文摘A novel alkaline earth-based chiral metal-organic framework 1 {[Ba（1.5）L（μ-OH2）2（DMF）2（H2O）]·DMF·1.5 H2O}n was synthesized from C2-symmetric TADDOL-based ligand H4L and structurally 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 monoclinic space group C2 with a = 43.5105（12）, b = 9.4781（3）, c = 15.5620（4） A°, β = 99.7770（10）o, V = 6324.5（3） A°^3, Z = 2, Mr = 1434.18 g/mol, Dc = 1.506 g/cm^3, F（000） = 2904, GOOF = 1.026, the final R = 0.0358 and w R = 0.0952 for 21747 observed reflections with I 〉 2σ（I）. Each Ba3 cluster in 1 is linked by eight ligands and each ligand with one coordination-free carboxyl oxygen, O（5）, is coordinated to four Ba3 clusters to generate a 3D network. In addition, the photoluminescence of 1 and H4L was also investigated.
