Two novel complexes, [Cd2(BMQU)2Cl4] (1) and [Ni(BMQU)2HPO4]·1.5H2O (2) (BMQU = 2-(2-benzimidazolyl)quinoline), were synthesized by the hydrothermal method and characterized by elemental analysis, IR,...Two novel complexes, [Cd2(BMQU)2Cl4] (1) and [Ni(BMQU)2HPO4]·1.5H2O (2) (BMQU = 2-(2-benzimidazolyl)quinoline), were synthesized by the hydrothermal method and characterized by elemental analysis, IR, and TG-DTG. The crystal structures were determined by single-crystal X-ray diffraction. Both 1 and 2 crystallize in the triclinic system, space group P . The data for 1: a = 0.8342(7), b = 0.9226(9), c = 1.0646(8) nm, α = 90.819(2), β = 97.466(2), γ = 98.280(2)°. The Cd(Ⅱ) is coordinated with three chlorine atoms and two nitrogen atoms of a BMQU molecule, generating a distorted square-pyramidal geometry. The dinuclear Cd(Ⅱ) complex is formed by two chlorine bridge bonds, and the one-dimensional chain structure is constructed with the hydrogen bond N-H…Cl and π-π stacking interaction. The data for 2: a = 1.2251(1), b = 1.2451(1), c = 1.2868(1) nm, α = 107.510(2), β = 98.630(1), γ = 109.921(2)°. The Ni(Ⅱ) is coordinated with four nitrogen atoms of two BMQU molecules and two oxygen atoms of a HPO42-, forming a distorted-octahedral geometry. The two-dimensional layer structure is formed by the hydrogen bonds and π-π stacking interaction between neighboring molecules. Complex 1 shows a strong blue fluorescence emission (λmax= 456 nm) at solid state.展开更多
N,N,N',N'-tetra[(2-benzimidazolyl)methyl]-1,2-ethanediamine (EDTB) lanthanide chloride complexes were prepared (Ln3+=Eu3+, Tb3+ or Gd3+). The results of single crystal X-ray structural analysis show that [(ED...N,N,N',N'-tetra[(2-benzimidazolyl)methyl]-1,2-ethanediamine (EDTB) lanthanide chloride complexes were prepared (Ln3+=Eu3+, Tb3+ or Gd3+). The results of single crystal X-ray structural analysis show that [(EDTB)GdCl2]Cl(C2H5OH)(H2O)2 crystal is in space group P21 / c with a=8.848(2) ?, b=26.313(5) ?, c=18.929(4) ?, β=97.82(3)o, V=4366(2) ?3, Z=4. The luminescent properties of the terbium and europium complexes have been studied.展开更多
The catalytic system of[2-(2-benzimidazolyl)-6-((1-aryliminoethyl)pyridyl)]nickel chloride/MAO(methylalu- minoxane)was found to be good active for vinyl polymerization of norbornene and provided polymers with relative...The catalytic system of[2-(2-benzimidazolyl)-6-((1-aryliminoethyl)pyridyl)]nickel chloride/MAO(methylalu- minoxane)was found to be good active for vinyl polymerization of norbornene and provided polymers with relative narrow molecular distributions.Various reaction parameters,such as the ratios of nickel precursor to MAO or monomer norbornene, and the nature of the ligands in complexes were carefully investigated to realize their effects on the catalytic activities, polymer molecular weight and molecular we...展开更多
Two new copper(I) halide complexes bearing 2-(2-benzimidazolyl)-6-methylpyridine (Hbmp) and PPh3 ligands, Cu(Hbmp)(PPh3)X (X = Br (1); I (2)), have been synthesized and characterized. Single-crystal X-...Two new copper(I) halide complexes bearing 2-(2-benzimidazolyl)-6-methylpyridine (Hbmp) and PPh3 ligands, Cu(Hbmp)(PPh3)X (X = Br (1); I (2)), have been synthesized and characterized. Single-crystal X-ray structure analysis reveals that the halide ligand has a significant impact on the Cu-Npyridyl bond lengths. Complexes 1 and 2 show the solid-state emissions at ambient temperature, varying with the halide bound to the { Cu(Hbmp)(PPh3) } motif, which are perhaps best attributed to the metal-to-ligand charge-transfer (Cu(I) → Hbmp) transition mixed with some ligand-to-ligand charge-transfer (X and PPh3 → Hbmp) character.展开更多
Dysregulated HGF/c-Met signalling has been associated with many human cancers,poor clinical outcomes,and even resistance acquisition to some approved targeted therapies.As such,c-Met kinase has emerged as an attractiv...Dysregulated HGF/c-Met signalling has been associated with many human cancers,poor clinical outcomes,and even resistance acquisition to some approved targeted therapies.As such,c-Met kinase has emerged as an attractive target for anticancer drug discovery.展开更多
基金Supported by the Natural Science Foundation of Education Department of Henan Province (No. 2011B150025)
文摘Two novel complexes, [Cd2(BMQU)2Cl4] (1) and [Ni(BMQU)2HPO4]·1.5H2O (2) (BMQU = 2-(2-benzimidazolyl)quinoline), were synthesized by the hydrothermal method and characterized by elemental analysis, IR, and TG-DTG. The crystal structures were determined by single-crystal X-ray diffraction. Both 1 and 2 crystallize in the triclinic system, space group P . The data for 1: a = 0.8342(7), b = 0.9226(9), c = 1.0646(8) nm, α = 90.819(2), β = 97.466(2), γ = 98.280(2)°. The Cd(Ⅱ) is coordinated with three chlorine atoms and two nitrogen atoms of a BMQU molecule, generating a distorted square-pyramidal geometry. The dinuclear Cd(Ⅱ) complex is formed by two chlorine bridge bonds, and the one-dimensional chain structure is constructed with the hydrogen bond N-H…Cl and π-π stacking interaction. The data for 2: a = 1.2251(1), b = 1.2451(1), c = 1.2868(1) nm, α = 107.510(2), β = 98.630(1), γ = 109.921(2)°. The Ni(Ⅱ) is coordinated with four nitrogen atoms of two BMQU molecules and two oxygen atoms of a HPO42-, forming a distorted-octahedral geometry. The two-dimensional layer structure is formed by the hydrogen bonds and π-π stacking interaction between neighboring molecules. Complex 1 shows a strong blue fluorescence emission (λmax= 456 nm) at solid state.
基金This work was supported by the State Key Program of Basic Research(G1998061310)the National Natural Science Foundation of China(59872001)+1 种基金Doctoral Program Foundation of High Education(99000132)Visiting Scholar Foundation of Key Lab.In the University.
文摘N,N,N',N'-tetra[(2-benzimidazolyl)methyl]-1,2-ethanediamine (EDTB) lanthanide chloride complexes were prepared (Ln3+=Eu3+, Tb3+ or Gd3+). The results of single crystal X-ray structural analysis show that [(EDTB)GdCl2]Cl(C2H5OH)(H2O)2 crystal is in space group P21 / c with a=8.848(2) ?, b=26.313(5) ?, c=18.929(4) ?, β=97.82(3)o, V=4366(2) ?3, Z=4. The luminescent properties of the terbium and europium complexes have been studied.
文摘The catalytic system of[2-(2-benzimidazolyl)-6-((1-aryliminoethyl)pyridyl)]nickel chloride/MAO(methylalu- minoxane)was found to be good active for vinyl polymerization of norbornene and provided polymers with relative narrow molecular distributions.Various reaction parameters,such as the ratios of nickel precursor to MAO or monomer norbornene, and the nature of the ligands in complexes were carefully investigated to realize their effects on the catalytic activities, polymer molecular weight and molecular we...
基金support from the NNSFC(Nos21163009 and 21001057)the Key Project of Chinese Ministry of Education(No211088)+2 种基金the Advanced Program for the Retuned Overseas Chinese Scholars of the MOHRSS(No 474[2011])the Training Program for Jiangxi Provincial Young Scientiststhe Foundation of State Key Laboratory of Structural Chemistry(No20110015)
文摘Two new copper(I) halide complexes bearing 2-(2-benzimidazolyl)-6-methylpyridine (Hbmp) and PPh3 ligands, Cu(Hbmp)(PPh3)X (X = Br (1); I (2)), have been synthesized and characterized. Single-crystal X-ray structure analysis reveals that the halide ligand has a significant impact on the Cu-Npyridyl bond lengths. Complexes 1 and 2 show the solid-state emissions at ambient temperature, varying with the halide bound to the { Cu(Hbmp)(PPh3) } motif, which are perhaps best attributed to the metal-to-ligand charge-transfer (Cu(I) → Hbmp) transition mixed with some ligand-to-ligand charge-transfer (X and PPh3 → Hbmp) character.
基金This work was supported by the Fundamental Research Funds for the Central Universities(Nos.31920170193 and 31920200026).
文摘Dysregulated HGF/c-Met signalling has been associated with many human cancers,poor clinical outcomes,and even resistance acquisition to some approved targeted therapies.As such,c-Met kinase has emerged as an attractive target for anticancer drug discovery.