A new dicopper(II) compound with oxalate and reduced imino nitroxide radicals [Cu2(m-C2O4)(Him2-py)2(H2O)2](NO3)2 (Him2-py=1-hydroxy-2-(2-pyridyl)-4,4,5,5-tetramethyli- midazoline) has been synthesized and its crystal...A new dicopper(II) compound with oxalate and reduced imino nitroxide radicals [Cu2(m-C2O4)(Him2-py)2(H2O)2](NO3)2 (Him2-py=1-hydroxy-2-(2-pyridyl)-4,4,5,5-tetramethyli- midazoline) has been synthesized and its crystal structure was determined by X-ray diffraction method. The complex crystallizes in monoclinic, space group P21/n with a = 9.913(4), b = 19.057(8), c = 10.169(4) ? b = 114.292(7), V = 1751(1) 3, C26H38Cu2N8O14, Mr = 813.72, Dc = 1.543 g/cm3, m(MoKa) = 1.290 mm-1, F(000) = 840, Z = 2, the final R = 0.0398 and wR = 0.0986 for 1878 observed reflections (I>2s(I)). The imino nitroxide 2-(2-pyridyl)-4,4,5,5-tetramethyl- imidazoline-1-oxyl (im2-py) is reduced in the reaction to yield Him2-py which consists of oxalato-bridged centrosymmetric [Cu2(m-C2O4)(Him2-py)2(H2O)2]2+ ions and noncoordinated NO3- anions. Each copper(II) ion is in a distorted tetragonal pyramid environment: two nitrogen atoms from Him2-py and two oxygen atoms from the oxalate group are in the basal plane, and one water molecule at the axial position.展开更多
A novel chain complex was synthesized and its crystal structure has been deter- mined by X-ray diffraction technique. It was found that the local coordination geometry around Cu(Ⅱ) is a distorted tetrahedron and C14H...A novel chain complex was synthesized and its crystal structure has been deter- mined by X-ray diffraction technique. It was found that the local coordination geometry around Cu(Ⅱ) is a distorted tetrahedron and C14H9CuNO3CH3OH is bridged by the carboxylate oxygen atom to form an infinite one-dimensional linear chain. The hydrogen bond exists between O(1) and solvate molecule O(4). The crystal belongs to monoclinic, space group P21 with a = 9.6650(19), b = 7.1280(14), c = 9.925(2) ? b = 98.39(3)? V = 676.4(2) 3, Z = 2, F(000) = 342 and m(MoK? = 1.629 mm-1 .展开更多
Two Cu(Ⅰ)complexes[Cu(Bphen)(dppBz)]ClO_(4)·2CH_(3)OH(1)and[Cu_(2)(Bphen)_(2)(dpppda)]BF_(4)(2){Bphen=4,7-diphenyl-1,10-phenanthroline,dppBz=1,2-Bis(diphenylphosphino)benzene,dpppda=N1,N1,N4,N4-tetrakis[(dipheny...Two Cu(Ⅰ)complexes[Cu(Bphen)(dppBz)]ClO_(4)·2CH_(3)OH(1)and[Cu_(2)(Bphen)_(2)(dpppda)]BF_(4)(2){Bphen=4,7-diphenyl-1,10-phenanthroline,dppBz=1,2-Bis(diphenylphosphino)benzene,dpppda=N1,N1,N4,N4-tetrakis[(diphenylphosphino)methyl]-1,4-benzenediamin}were synthesized using a one-pot method.X-ray crystallography was used to elucidate their crystal structures and photophysical properties.A series of characterization tests including elemental analysis,NMR,FT-IR,UV-Vis absorption spectroscopy,fluorescence spectroscopy,thermal gravimetric analysis and terahertz time-domain spectroscopy(THz-TDS)were used to further investigate their properties.The results show that complex 1 structure is mononuclear containing two solvent molecules per unit cell,while complex 2 structure is binuclear containing two metal centers per unit cell.According to photophysical properties and density functional theory(DFT)calculations,their luminescence properties can be attributed to metal-to-ligand charge transfer(MLCT).Both complexes have a unique stability,which is confirmed by thermal gravimetric analysis.展开更多
基金This work was supported by the National Natural Science Foundation of China (No. 20271029)
文摘A new dicopper(II) compound with oxalate and reduced imino nitroxide radicals [Cu2(m-C2O4)(Him2-py)2(H2O)2](NO3)2 (Him2-py=1-hydroxy-2-(2-pyridyl)-4,4,5,5-tetramethyli- midazoline) has been synthesized and its crystal structure was determined by X-ray diffraction method. The complex crystallizes in monoclinic, space group P21/n with a = 9.913(4), b = 19.057(8), c = 10.169(4) ? b = 114.292(7), V = 1751(1) 3, C26H38Cu2N8O14, Mr = 813.72, Dc = 1.543 g/cm3, m(MoKa) = 1.290 mm-1, F(000) = 840, Z = 2, the final R = 0.0398 and wR = 0.0986 for 1878 observed reflections (I>2s(I)). The imino nitroxide 2-(2-pyridyl)-4,4,5,5-tetramethyl- imidazoline-1-oxyl (im2-py) is reduced in the reaction to yield Him2-py which consists of oxalato-bridged centrosymmetric [Cu2(m-C2O4)(Him2-py)2(H2O)2]2+ ions and noncoordinated NO3- anions. Each copper(II) ion is in a distorted tetragonal pyramid environment: two nitrogen atoms from Him2-py and two oxygen atoms from the oxalate group are in the basal plane, and one water molecule at the axial position.
文摘A novel chain complex was synthesized and its crystal structure has been deter- mined by X-ray diffraction technique. It was found that the local coordination geometry around Cu(Ⅱ) is a distorted tetrahedron and C14H9CuNO3CH3OH is bridged by the carboxylate oxygen atom to form an infinite one-dimensional linear chain. The hydrogen bond exists between O(1) and solvate molecule O(4). The crystal belongs to monoclinic, space group P21 with a = 9.6650(19), b = 7.1280(14), c = 9.925(2) ? b = 98.39(3)? V = 676.4(2) 3, Z = 2, F(000) = 342 and m(MoK? = 1.629 mm-1 .
基金supported by the Key Project of Science and Technology Plan of Beijing Education Commission(KZ20231002808)。
文摘Two Cu(Ⅰ)complexes[Cu(Bphen)(dppBz)]ClO_(4)·2CH_(3)OH(1)and[Cu_(2)(Bphen)_(2)(dpppda)]BF_(4)(2){Bphen=4,7-diphenyl-1,10-phenanthroline,dppBz=1,2-Bis(diphenylphosphino)benzene,dpppda=N1,N1,N4,N4-tetrakis[(diphenylphosphino)methyl]-1,4-benzenediamin}were synthesized using a one-pot method.X-ray crystallography was used to elucidate their crystal structures and photophysical properties.A series of characterization tests including elemental analysis,NMR,FT-IR,UV-Vis absorption spectroscopy,fluorescence spectroscopy,thermal gravimetric analysis and terahertz time-domain spectroscopy(THz-TDS)were used to further investigate their properties.The results show that complex 1 structure is mononuclear containing two solvent molecules per unit cell,while complex 2 structure is binuclear containing two metal centers per unit cell.According to photophysical properties and density functional theory(DFT)calculations,their luminescence properties can be attributed to metal-to-ligand charge transfer(MLCT).Both complexes have a unique stability,which is confirmed by thermal gravimetric analysis.
