Step-by-step strategy from achiral precursors to polyoxometalates-based chiral organic-inorganic hybrids.
Using two types of triol ligands, several novel asymmetrically triol-functionalized Anderson organic hybrids have been efficiently synthesized in high purity and good yields via a convenient two-step esterification reaction. These organic-inorganic hybrids are chiral and can be spontaneously resolved with suitable solvents. Their molecular and crystal structures have been confirmed by single-crystal X-ray diffraction studies. Stable solid-state chirality of the corresponding enantiopure crystals has also been confirmed definitively by CD spectra. Interestingly, these organic-inorganic hybrids possess a layer-by-layer structure, forming solvent-accessible nanoscale chiral channels via a 1D infinite helical chain substructure. TGA measurements indicated that the species of the central heteroatoms significantly effects the stability of these compounds.
Department of Chemistry, Tsinghua University , Beijing 100084, P. R. China.
Jiangwei
J
Zhang
Jianhui
J
Luo
Pingmei
P
Wang
Bin
B
Ding
Yichao
Y
Huang
Zhenlin
Z
Zhao
Jin
J
Zhang
Yongge
Y
Wei