The title complex {[%n%|Bu-2SnO-2CCH(CS-2NEt-2)-2]-2O}-2 was synthesized and characterized by elemental analysis, IR, NMR and X|ray single crystal diffraction. The results show that the complex belongs to a monoclinic...The title complex {[%n%|Bu-2SnO-2CCH(CS-2NEt-2)-2]-2O}-2 was synthesized and characterized by elemental analysis, IR, NMR and X|ray single crystal diffraction. The results show that the complex belongs to a monoclinic system with space group %C2/c%, and unit cell dimensions: %a%=2.848(5) nm, {%b%=1.381(2) nm}, %c%=3.239(6) nm, %β%=111.11(2)°, %Z=4, V%=11.884(35) nm+3, %D%-c=1.329 g/cm+3, {%F%(000)}=4 912, %S=0.991, R-1=0.053 5, wR-2=0.116 6.% The complex has a centrosymmetric dimer structure mode with a four|membered central %endo%|cyclic Sn-2O-2 unit. The %endo%|cyclic tin atoms are six|coordination and have coordition geometry of distorted octahedron. The %exo%|cyclic tin atoms are five|coordination and have coordination geometry of distorted trigonal bipyramid. This complex was tested %in vitro% against human tumour cell lines, MCF-7 and WiDr, and displayed the higher activity.展开更多
The Pt-SnO2 /C catalysts were prepared by two chemical deposition methods.Compared with the Pt/C catalyst a new weak adsorption oxidation peak at low potential is found on the Pt-SnO2 /C catalysts prepared by two diff...The Pt-SnO2 /C catalysts were prepared by two chemical deposition methods.Compared with the Pt/C catalyst a new weak adsorption oxidation peak at low potential is found on the Pt-SnO2 /C catalysts prepared by two different methods.The particle size of SnO2 can influence Pt particle size.The smaller the SnO2 particle size is,the smaller the Pt particle size and the better the activity of the catalyst.Both the catalysts Pt-SnO2 /C(a)and Pt-SnO2 /C(b)have good stability,while the Pt-SnO2 /C(b)has higher activity for ethanol and the adsorbed CO(COad)electro-oxidation.展开更多
文摘The title complex {[%n%|Bu-2SnO-2CCH(CS-2NEt-2)-2]-2O}-2 was synthesized and characterized by elemental analysis, IR, NMR and X|ray single crystal diffraction. The results show that the complex belongs to a monoclinic system with space group %C2/c%, and unit cell dimensions: %a%=2.848(5) nm, {%b%=1.381(2) nm}, %c%=3.239(6) nm, %β%=111.11(2)°, %Z=4, V%=11.884(35) nm+3, %D%-c=1.329 g/cm+3, {%F%(000)}=4 912, %S=0.991, R-1=0.053 5, wR-2=0.116 6.% The complex has a centrosymmetric dimer structure mode with a four|membered central %endo%|cyclic Sn-2O-2 unit. The %endo%|cyclic tin atoms are six|coordination and have coordition geometry of distorted octahedron. The %exo%|cyclic tin atoms are five|coordination and have coordination geometry of distorted trigonal bipyramid. This complex was tested %in vitro% against human tumour cell lines, MCF-7 and WiDr, and displayed the higher activity.
文摘The Pt-SnO2 /C catalysts were prepared by two chemical deposition methods.Compared with the Pt/C catalyst a new weak adsorption oxidation peak at low potential is found on the Pt-SnO2 /C catalysts prepared by two different methods.The particle size of SnO2 can influence Pt particle size.The smaller the SnO2 particle size is,the smaller the Pt particle size and the better the activity of the catalyst.Both the catalysts Pt-SnO2 /C(a)and Pt-SnO2 /C(b)have good stability,while the Pt-SnO2 /C(b)has higher activity for ethanol and the adsorbed CO(COad)electro-oxidation.
