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
Crystal structure of the title compound C 16 H 25 O 2NS 2 has been determined by X-ray diffraction method. Its crystallographic data were as follows: M r=327.51, triclinic, space group P1, a=8.864(3), b=10.127(4), c=1...Crystal structure of the title compound C 16 H 25 O 2NS 2 has been determined by X-ray diffraction method. Its crystallographic data were as follows: M r=327.51, triclinic, space group P1, a=8.864(3), b=10.127(4), c=10.390(3) , α=105.94(3), β=103.10(2), γ=90.96(3)°, V=870.3(7) 3, Z=2, D c=1.250g.cm -3 , μ(MoKα)=2.966cm -1 , F(000)=176, a total of 3275 reflections measured (2θ max =50°), 2246[I5σ(I)] used in the refinement, R=0.067, R w=0.082. The result shows that the distances of N(1)-C(2) and N(1)-C(3) are longer than that of N(1)-C(11), which indicates that the interaction of C Ar -N sp 2 is stronger than that of C sp 3 -N sp 2 . Oxygen, nitrogen and sulfur atoms of the ring in the same plane was deduced from the least\|squares planes and the dihedral angles.展开更多
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.
文摘Crystal structure of the title compound C 16 H 25 O 2NS 2 has been determined by X-ray diffraction method. Its crystallographic data were as follows: M r=327.51, triclinic, space group P1, a=8.864(3), b=10.127(4), c=10.390(3) , α=105.94(3), β=103.10(2), γ=90.96(3)°, V=870.3(7) 3, Z=2, D c=1.250g.cm -3 , μ(MoKα)=2.966cm -1 , F(000)=176, a total of 3275 reflections measured (2θ max =50°), 2246[I5σ(I)] used in the refinement, R=0.067, R w=0.082. The result shows that the distances of N(1)-C(2) and N(1)-C(3) are longer than that of N(1)-C(11), which indicates that the interaction of C Ar -N sp 2 is stronger than that of C sp 3 -N sp 2 . Oxygen, nitrogen and sulfur atoms of the ring in the same plane was deduced from the least\|squares planes and the dihedral angles.