Anion receptors including pyrimidine subunit were designed and synthesized and their binding abilities with various anions were investigated by fluorescence and ~1H NMR titration experiments.DFT calculations provided ...Anion receptors including pyrimidine subunit were designed and synthesized and their binding abilities with various anions were investigated by fluorescence and ~1H NMR titration experiments.DFT calculations provided some information for anion recognition.It is confirmed that both of two new pyrimidine anion receptors have the selectivity for Cl-.展开更多
Five organic complexes are prepared by cocrystallization of tri-[（N-methyl-2-imidazoly）methoxy]cyclotriguiacylene （TMIM-CTG） with corresponding acids. While hydrogen bonds are the basic interactions in the five co...Five organic complexes are prepared by cocrystallization of tri-[（N-methyl-2-imidazoly）methoxy]cyclotriguiacylene （TMIM-CTG） with corresponding acids. While hydrogen bonds are the basic interactions in the five complexes, the homo-included motifs with C--H…π interactions also control the molecular arrangement except for complex 5. In complex 1, the two dimensional networks contain 1D zigzag chains formed by hydrogen bonding and 1D chains of homo-included CTG motifs. Complex 2 has 2D 4.82 hydrogen bonding networks, and the chains of homomeric inclusion extend the 2D structure to a 3D framework. Complex 3 contains four-membered rings through hydrogen bonds, and the chains of homo-inclusion link the rings to a novel 2D network. In complex 4, hydrogen bonds construct a novel double-layer 2D network, which is extended to a 3D framework by ＂hand-shake＂ dimeric homomeric inclusion interactions. Interestingly, there is no homomeric inclusion phenomenon in complex 5 and hydrogen bonds solely connect two components to a chiral （6,3） 2D network.展开更多
基金Project (21302232) supported by the National Natural Science Foundation of China
文摘Anion receptors including pyrimidine subunit were designed and synthesized and their binding abilities with various anions were investigated by fluorescence and ~1H NMR titration experiments.DFT calculations provided some information for anion recognition.It is confirmed that both of two new pyrimidine anion receptors have the selectivity for Cl-.
文摘Five organic complexes are prepared by cocrystallization of tri-[（N-methyl-2-imidazoly）methoxy]cyclotriguiacylene （TMIM-CTG） with corresponding acids. While hydrogen bonds are the basic interactions in the five complexes, the homo-included motifs with C--H…π interactions also control the molecular arrangement except for complex 5. In complex 1, the two dimensional networks contain 1D zigzag chains formed by hydrogen bonding and 1D chains of homo-included CTG motifs. Complex 2 has 2D 4.82 hydrogen bonding networks, and the chains of homomeric inclusion extend the 2D structure to a 3D framework. Complex 3 contains four-membered rings through hydrogen bonds, and the chains of homo-inclusion link the rings to a novel 2D network. In complex 4, hydrogen bonds construct a novel double-layer 2D network, which is extended to a 3D framework by ＂hand-shake＂ dimeric homomeric inclusion interactions. Interestingly, there is no homomeric inclusion phenomenon in complex 5 and hydrogen bonds solely connect two components to a chiral （6,3） 2D network.
