A new piperazinium 4-nitro phenolate monohydrate single crystal(PNP)was grown by employing the solution growth technique piperazine and 4-nitrophenol,were the source material used for the growth,acetonitrile is used a...A new piperazinium 4-nitro phenolate monohydrate single crystal(PNP)was grown by employing the solution growth technique piperazine and 4-nitrophenol,were the source material used for the growth,acetonitrile is used as solvent.The grown crystal was characterized by Single X-ray analysis and it shows that piperazinium 4-nitrophenol monohydrate crystallizes in the monoclinic space group P2 1/c,with cell parameters a=10.902 5(4),b=6.226 1(3),c=14.031 8(5),and z=4.The lattice parameters of the substances were also determined by using powder diffraction methods.The functional groups are identified by using FTIR spectral analysis.The absorbance of title compound were analyzed using UV-Vis spectra.The thermo analytical properties of the crystal were studied using TG,DTA.展开更多
Electron impact ionization mass spectra of six new synthetic bis-piperazinium salts (M2+ 2Br-2HC1) with anti-tumor activities were obtained. Although the M+ ions and double charge ions M2+ were notobserved in E1 mass ...Electron impact ionization mass spectra of six new synthetic bis-piperazinium salts (M2+ 2Br-2HC1) with anti-tumor activities were obtained. Although the M+ ions and double charge ions M2+ were notobserved in E1 mass spectra, some strange ions such as [M-2]+ ions,[M-R]+ ions , [M-R-l]+ ions, [M-2R]+ ions and even [RX]+ ions presented in EIMS by decreasing the electron energy. These phenomena may be explained as R+ rearrangement and intermolecular reaction occurring in the condensed phase. We tried to describe the main routes of fragmentation and high sensitive mass spectra of the fragments oaboutthese compounds.展开更多
文摘A new piperazinium 4-nitro phenolate monohydrate single crystal(PNP)was grown by employing the solution growth technique piperazine and 4-nitrophenol,were the source material used for the growth,acetonitrile is used as solvent.The grown crystal was characterized by Single X-ray analysis and it shows that piperazinium 4-nitrophenol monohydrate crystallizes in the monoclinic space group P2 1/c,with cell parameters a=10.902 5(4),b=6.226 1(3),c=14.031 8(5),and z=4.The lattice parameters of the substances were also determined by using powder diffraction methods.The functional groups are identified by using FTIR spectral analysis.The absorbance of title compound were analyzed using UV-Vis spectra.The thermo analytical properties of the crystal were studied using TG,DTA.
文摘Electron impact ionization mass spectra of six new synthetic bis-piperazinium salts (M2+ 2Br-2HC1) with anti-tumor activities were obtained. Although the M+ ions and double charge ions M2+ were notobserved in E1 mass spectra, some strange ions such as [M-2]+ ions,[M-R]+ ions , [M-R-l]+ ions, [M-2R]+ ions and even [RX]+ ions presented in EIMS by decreasing the electron energy. These phenomena may be explained as R+ rearrangement and intermolecular reaction occurring in the condensed phase. We tried to describe the main routes of fragmentation and high sensitive mass spectra of the fragments oaboutthese compounds.
