Two 1,3-alternate thiacalix[4]arene derivatives bearing amide groups, 1,3-alternate p-tert-butylthiacalix[4]arene tetraamide （4）, and 1,3-alternate p-H-thiacalix[4]arene tetraamide （6） were prepared, and their cry...Two 1,3-alternate thiacalix[4]arene derivatives bearing amide groups, 1,3-alternate p-tert-butylthiacalix[4]arene tetraamide （4）, and 1,3-alternate p-H-thiacalix[4]arene tetraamide （6） were prepared, and their crystal structures were determined by single-crystal X-ray diffraction method. The steric hindrances posed by tert-butyl groups play an important part in the synthesis and the self-assembly of the two compounds. Compound 6 was synthesized from the corresponding ester, which was obtained by the reaction of acid chloride with ammonia. In the crystal structure, compound 4 presents a highly symmetric molecular structure, while for compound 6, because of absence of tert-butyl groups, it presents a more flexible molecular structure.展开更多
Silica-bound mercaptoselenaether-containing silsesquioxane and its platinum or rhodium complex were synthesized from gamma-(2,3-epithiopropyl)propyltrimethoxysilane via ring-opening reaction with bis(2-hydroxyethyl)se...Silica-bound mercaptoselenaether-containing silsesquioxane and its platinum or rhodium complex were synthesized from gamma-(2,3-epithiopropyl)propyltrimethoxysilane via ring-opening reaction with bis(2-hydroxyethyl)selenide,followed by hydrolysis and immobilization on fumed silica,and then reacting with potassium chloroplatinite or rhodium chloride in acetone under nitrogen atmosphere.It was found that two noble metal complexes can catalyze the hydrosilylation of olefins with triethoxysilane effectively.The influences of temperature,the amount of complex used,the nature of olefin on catalytic activity were investigated.展开更多
Linear polysiloxanes with pendant benzo-15-crown-5 moieties have been synthesized from 3'--or 4'--allylbenzo--15--C--5 via hydrosilylation of methyldichlorosilane, followed by polycondensation with silanol--te...Linear polysiloxanes with pendant benzo-15-crown-5 moieties have been synthesized from 3'--or 4'--allylbenzo--15--C--5 via hydrosilylation of methyldichlorosilane, followed by polycondensation with silanol--terminated polydimethylsiloxane. It was found that the polysiloxanes could be used as carriers in bulk liquid membrane to transport ions. Factors influencing transport rate have been investigated.展开更多
基金Supported by the National Natural Science Foundation of China(20772092)the Hubei Province Natural Science Fund for Distinguished Young Scholars(2007ABB021)
文摘Two 1,3-alternate thiacalix[4]arene derivatives bearing amide groups, 1,3-alternate p-tert-butylthiacalix[4]arene tetraamide （4）, and 1,3-alternate p-H-thiacalix[4]arene tetraamide （6） were prepared, and their crystal structures were determined by single-crystal X-ray diffraction method. The steric hindrances posed by tert-butyl groups play an important part in the synthesis and the self-assembly of the two compounds. Compound 6 was synthesized from the corresponding ester, which was obtained by the reaction of acid chloride with ammonia. In the crystal structure, compound 4 presents a highly symmetric molecular structure, while for compound 6, because of absence of tert-butyl groups, it presents a more flexible molecular structure.
文摘Silica-bound mercaptoselenaether-containing silsesquioxane and its platinum or rhodium complex were synthesized from gamma-(2,3-epithiopropyl)propyltrimethoxysilane via ring-opening reaction with bis(2-hydroxyethyl)selenide,followed by hydrolysis and immobilization on fumed silica,and then reacting with potassium chloroplatinite or rhodium chloride in acetone under nitrogen atmosphere.It was found that two noble metal complexes can catalyze the hydrosilylation of olefins with triethoxysilane effectively.The influences of temperature,the amount of complex used,the nature of olefin on catalytic activity were investigated.
文摘Linear polysiloxanes with pendant benzo-15-crown-5 moieties have been synthesized from 3'--or 4'--allylbenzo--15--C--5 via hydrosilylation of methyldichlorosilane, followed by polycondensation with silanol--terminated polydimethylsiloxane. It was found that the polysiloxanes could be used as carriers in bulk liquid membrane to transport ions. Factors influencing transport rate have been investigated.
