The method of Adler was improved to prepare a series of 5,10,15,20-tetrakis(4-alkoxyphenyl)porphyrins and their complexes containing Fe3+, Mn3+, Pb2+, Co2+, Cu2+, Zn2+. Among them there were seven new compounds. All t...The method of Adler was improved to prepare a series of 5,10,15,20-tetrakis(4-alkoxyphenyl)porphyrins and their complexes containing Fe3+, Mn3+, Pb2+, Co2+, Cu2+, Zn2+. Among them there were seven new compounds. All these compounds were identified through 1H NMR, MS, IR, UV and Element analysis. The correlation between the structure of compounds and their 1H NMR, MS, IR, UV spectra was discussed and their specific spectra were explained. We found nine metalloporphyrins exhibited liquid crystal behaviour through DSC and polarized-light microscope. They had one to three mesophases and certain phase transition temperature, ?H and temperature range of L.C(?T).展开更多
The zoning distribution of metallic deposits refers to the regular zoning arrangement of useful minerals or elements in space. If such zoning distribution is on the plane figure, it is called horizontal zoning; if zon...The zoning distribution of metallic deposits refers to the regular zoning arrangement of useful minerals or elements in space. If such zoning distribution is on the plane figure, it is called horizontal zoning; if zoning distribution is vertical, it iscalled vertical zoning. The zoning distribution of metallic deposit was first discussed by Spurr. He展开更多
文摘The method of Adler was improved to prepare a series of 5,10,15,20-tetrakis(4-alkoxyphenyl)porphyrins and their complexes containing Fe3+, Mn3+, Pb2+, Co2+, Cu2+, Zn2+. Among them there were seven new compounds. All these compounds were identified through 1H NMR, MS, IR, UV and Element analysis. The correlation between the structure of compounds and their 1H NMR, MS, IR, UV spectra was discussed and their specific spectra were explained. We found nine metalloporphyrins exhibited liquid crystal behaviour through DSC and polarized-light microscope. They had one to three mesophases and certain phase transition temperature, ?H and temperature range of L.C(?T).
文摘The zoning distribution of metallic deposits refers to the regular zoning arrangement of useful minerals or elements in space. If such zoning distribution is on the plane figure, it is called horizontal zoning; if zoning distribution is vertical, it iscalled vertical zoning. The zoning distribution of metallic deposit was first discussed by Spurr. He
