The Schiff base form of the 4-acylpyrazolone ligand was immobilized on the silica surface by reaction of 3-aminopropyl silica with 4-acetyl-5-methyl-2-phenyl-2,4-dihydro-pyrazol-3-one in 97% yield, producing grafted s...The Schiff base form of the 4-acylpyrazolone ligand was immobilized on the silica surface by reaction of 3-aminopropyl silica with 4-acetyl-5-methyl-2-phenyl-2,4-dihydro-pyrazol-3-one in 97% yield, producing grafted silica with 0.77 mmol/g ligand loading. This surface modified silica was shown to be selective in the adsorption of Yb3+ ions from dilute aqueous solutions, for which 98% adsorption was observed from a 1.0×10-5 mol/L aq. solution at pH 6.7, after 24 h at room temperature. Six other lanthanides studied Eu3+, Gd3+, Nd3+, Tb3+, Sm3+ and La3+ showed moderate to weaker adsorptions of 39%, 28%, 16%, 12%, 11% and 5% respectively under similar conditions.展开更多
A novel chelate Eu(TTA) 2(PMTBBP)Phen, which contained ligand 1 pheny 3 methyl 4 (4 t butylbenzoyl) 5 pyrazolone(HPMTBBP), 4,4,4 trifluro 1 (2 thienyl) 1,3 butandione(HTTA) and phenanthroline(Phen), was synthesized....A novel chelate Eu(TTA) 2(PMTBBP)Phen, which contained ligand 1 pheny 3 methyl 4 (4 t butylbenzoyl) 5 pyrazolone(HPMTBBP), 4,4,4 trifluro 1 (2 thienyl) 1,3 butandione(HTTA) and phenanthroline(Phen), was synthesized. Its chemical structure was elucidated by IR, UV, 1H NMR, MS, DSC and elementary analysis. The influence of acylpyrazolone on fluorescent intensity of the new chelate was studied. The results showed that Eu(TTA) 2(PMTBBP)Phen had more excellent PL properties and better film formation than that of Eu(TTA) 3Phen. [WT5HZ]展开更多
Eleven novel rare earth complexes[RE(HPMαFP)2Pen(NO3)2]NO3((HPMαFP)2 Pen:N,N’ -bis[(1-phenyl-3-methyl-5-oxo-4-pyrazolinyl )α-furylmethylidyne]-o-phenylenediimine;RE =La,Pr,Nd,Sm,Eu,Tb,Dy,Ho,Er,Yb,Y)have been synth...Eleven novel rare earth complexes[RE(HPMαFP)2Pen(NO3)2]NO3((HPMαFP)2 Pen:N,N’ -bis[(1-phenyl-3-methyl-5-oxo-4-pyrazolinyl )α-furylmethylidyne]-o-phenylenediimine;RE =La,Pr,Nd,Sm,Eu,Tb,Dy,Ho,Er,Yb,Y)have been synthesized.They were characterized by IR,UV-visible,1H NMR,13 C NMR,fluorescence,elemental analysis and molar conductance.The resu lts show that the bis-Schiff base ligand is quadridentate and the rare earth i ons are eight-coordinated in the complexes.The antibacterial ex periment indicated that they have hi gh antibacterial activities against S.aureus,B.subtillis,E.coli,E.carotovora and C.flaccumfaciens.展开更多
The electronic structures of N,N′ bis[(1 phenyl 3 methyl 5 oxo 4 pyrazolinyl) α furylmethylidyne]ethylendii mine (and o phenylendiimine), and their complexes of transition metals M (M=Ni, Cu, Co, Pd, Pt) have been c...The electronic structures of N,N′ bis[(1 phenyl 3 methyl 5 oxo 4 pyrazolinyl) α furylmethylidyne]ethylendii mine (and o phenylendiimine), and their complexes of transition metals M (M=Ni, Cu, Co, Pd, Pt) have been calculated by B3LYP method of DFT. Their geometries and bonding characters are discussed, and the relationship between their bioactivities and electronic structures are also discussed from the calculated results of electronic populations and frontier orbital energies.展开更多
A new ligand N,N′ bis[(1 phenyl 3 methyl 5 oxo 4 pyrazolinyl) 2 thenoylmethylidyne]ethyl enediimine (HPMTHP)\-2en and its five complexes have been sythesized. These complexes have the general formula [M(PMTHP)\-2en],...A new ligand N,N′ bis[(1 phenyl 3 methyl 5 oxo 4 pyrazolinyl) 2 thenoylmethylidyne]ethyl enediimine (HPMTHP)\-2en and its five complexes have been sythesized. These complexes have the general formula [M(PMTHP)\-2en], where M=Cu(Ⅱ), Ni(Ⅱ), Co(Ⅱ), Pd(Ⅱ), Pt(Ⅱ). They were characterized by elemental analysis, IR, UV vis, magnetic moments and molar conductance. The results showed that the complexes are all of quadricoordinate square planar geometry. The antibacterial experiment indicated that they have high antibacterial activities against S. aureus, B. subtillis, E. coli, E. carotovora, C. flaccumfaciens.展开更多
A one-dimensional chain complex bis{4-[(Z)-(4-chlorophenylamino)(2-furyl)methylene]-3-methyl-1-phenylpyrazol-5-onato}zinc(Ⅱ) Zn(C26H15N3O2Cl)2 has been synthesized. Its structure was characterized by elemental analys...A one-dimensional chain complex bis{4-[(Z)-(4-chlorophenylamino)(2-furyl)methylene]-3-methyl-1-phenylpyrazol-5-onato}zinc(Ⅱ) Zn(C26H15N3O2Cl)2 has been synthesized. Its structure was characterized by elemental analysis, IR, UV, thermal analysis and X-ray diffraction single crystal structure analysis. The title complex crystallizes in triclinic system, space group P1 with a=0.903 58(18) nm, b=1.359 8(3) nm, c=1.757 0(4) nm; α=102.42(3)°, β=101.24(3)°, γ=109.2(4)°, V=1.906 3(10) nm3. The final R factors are R=0.051 3 and wR=0.133 9. The zinc atom is four-coordinate involving two oxygen atoms and two nitrogen atoms forming a distorted tetrahedral geometry. The intermolecular hydrogen bonds C-H…N, C-H…Cl, C-H…π, together with intramolecular π…π stacking in the large congujate system, leading to the formation of a one-dimensional supramolecular chain. The results of TG-DTA analysis show that the title complex was stable under 323 ℃.展开更多
基金Project supported by US Department of Energy Global Nuclear Energy Partnership (DOE-GNEP) grant DE-FG07-07ID14881
文摘The Schiff base form of the 4-acylpyrazolone ligand was immobilized on the silica surface by reaction of 3-aminopropyl silica with 4-acetyl-5-methyl-2-phenyl-2,4-dihydro-pyrazol-3-one in 97% yield, producing grafted silica with 0.77 mmol/g ligand loading. This surface modified silica was shown to be selective in the adsorption of Yb3+ ions from dilute aqueous solutions, for which 98% adsorption was observed from a 1.0×10-5 mol/L aq. solution at pH 6.7, after 24 h at room temperature. Six other lanthanides studied Eu3+, Gd3+, Nd3+, Tb3+, Sm3+ and La3+ showed moderate to weaker adsorptions of 39%, 28%, 16%, 12%, 11% and 5% respectively under similar conditions.
文摘A novel chelate Eu(TTA) 2(PMTBBP)Phen, which contained ligand 1 pheny 3 methyl 4 (4 t butylbenzoyl) 5 pyrazolone(HPMTBBP), 4,4,4 trifluro 1 (2 thienyl) 1,3 butandione(HTTA) and phenanthroline(Phen), was synthesized. Its chemical structure was elucidated by IR, UV, 1H NMR, MS, DSC and elementary analysis. The influence of acylpyrazolone on fluorescent intensity of the new chelate was studied. The results showed that Eu(TTA) 2(PMTBBP)Phen had more excellent PL properties and better film formation than that of Eu(TTA) 3Phen. [WT5HZ]
文摘Eleven novel rare earth complexes[RE(HPMαFP)2Pen(NO3)2]NO3((HPMαFP)2 Pen:N,N’ -bis[(1-phenyl-3-methyl-5-oxo-4-pyrazolinyl )α-furylmethylidyne]-o-phenylenediimine;RE =La,Pr,Nd,Sm,Eu,Tb,Dy,Ho,Er,Yb,Y)have been synthesized.They were characterized by IR,UV-visible,1H NMR,13 C NMR,fluorescence,elemental analysis and molar conductance.The resu lts show that the bis-Schiff base ligand is quadridentate and the rare earth i ons are eight-coordinated in the complexes.The antibacterial ex periment indicated that they have hi gh antibacterial activities against S.aureus,B.subtillis,E.coli,E.carotovora and C.flaccumfaciens.
文摘The electronic structures of N,N′ bis[(1 phenyl 3 methyl 5 oxo 4 pyrazolinyl) α furylmethylidyne]ethylendii mine (and o phenylendiimine), and their complexes of transition metals M (M=Ni, Cu, Co, Pd, Pt) have been calculated by B3LYP method of DFT. Their geometries and bonding characters are discussed, and the relationship between their bioactivities and electronic structures are also discussed from the calculated results of electronic populations and frontier orbital energies.
文摘A new ligand N,N′ bis[(1 phenyl 3 methyl 5 oxo 4 pyrazolinyl) 2 thenoylmethylidyne]ethyl enediimine (HPMTHP)\-2en and its five complexes have been sythesized. These complexes have the general formula [M(PMTHP)\-2en], where M=Cu(Ⅱ), Ni(Ⅱ), Co(Ⅱ), Pd(Ⅱ), Pt(Ⅱ). They were characterized by elemental analysis, IR, UV vis, magnetic moments and molar conductance. The results showed that the complexes are all of quadricoordinate square planar geometry. The antibacterial experiment indicated that they have high antibacterial activities against S. aureus, B. subtillis, E. coli, E. carotovora, C. flaccumfaciens.
文摘A one-dimensional chain complex bis{4-[(Z)-(4-chlorophenylamino)(2-furyl)methylene]-3-methyl-1-phenylpyrazol-5-onato}zinc(Ⅱ) Zn(C26H15N3O2Cl)2 has been synthesized. Its structure was characterized by elemental analysis, IR, UV, thermal analysis and X-ray diffraction single crystal structure analysis. The title complex crystallizes in triclinic system, space group P1 with a=0.903 58(18) nm, b=1.359 8(3) nm, c=1.757 0(4) nm; α=102.42(3)°, β=101.24(3)°, γ=109.2(4)°, V=1.906 3(10) nm3. The final R factors are R=0.051 3 and wR=0.133 9. The zinc atom is four-coordinate involving two oxygen atoms and two nitrogen atoms forming a distorted tetrahedral geometry. The intermolecular hydrogen bonds C-H…N, C-H…Cl, C-H…π, together with intramolecular π…π stacking in the large congujate system, leading to the formation of a one-dimensional supramolecular chain. The results of TG-DTA analysis show that the title complex was stable under 323 ℃.
