Two new dinuclear lanthanidecomplexes,namely[Ln_(2)(dbm)_(2)(HL)_(2)(CH_(3)OH)_(2)]·4CH_(3)OH[Ln=Tb(1)and Dy(2),Hdbm=dibenzoylmethane]have been synthesized using prepared multidentate Schiff base ligand H_(3)L(hy...Two new dinuclear lanthanidecomplexes,namely[Ln_(2)(dbm)_(2)(HL)_(2)(CH_(3)OH)_(2)]·4CH_(3)OH[Ln=Tb(1)and Dy(2),Hdbm=dibenzoylmethane]have been synthesized using prepared multidentate Schiff base ligand H_(3)L(hydroxy‑acetic acid(4‑diethylamino‑2‑hydroxy‑benzylidene)‑hydrazide)with good biological activity.Structure characterizations show that the complex comprises two Ln3+ions,two dbm-ions,two HL^(2-)ligands,two CH_(3)OH molecules,and four free methanol molecules.Each Ln^(3+)ion is eight‑coordinated.The two central Lnions are bridged by twoμ_(2)‑O atoms leading to a parallelogram[Ln2O2]core.The interaction between the compounds(H_(3)L,1,and 2)and the calf thymus DNA(CT‑DNA)has been further confirmed by UV‑Vis spectrometry,fluorescence titration,and cyclic voltammetry.The results showed that both 1 and 2 could undergo insertion with CT‑DNA.CCDC:2343005,1;2343006,2.展开更多
A tetranuclear Ln(Ⅲ)-based complex:[Dy_(4)(dbm)_(4)(L)_(6)(μ_(3)-OH)_(2)]·CH_(3)CN(1)(HL=5-[(4-methylbenzylidene)amino]quinolin-8-ol,Hdbm=dibenzoylmethane)was manufactured and its structure was characterized in...A tetranuclear Ln(Ⅲ)-based complex:[Dy_(4)(dbm)_(4)(L)_(6)(μ_(3)-OH)_(2)]·CH_(3)CN(1)(HL=5-[(4-methylbenzylidene)amino]quinolin-8-ol,Hdbm=dibenzoylmethane)was manufactured and its structure was characterized in detail.Xray diffraction analysis shows that complex 1 belongs to the monoclinic crystal system and its space group is P2_1/n,which contains a rhombic Dy_(4)core.Magnetic measurements of 1 suggest it possesses extraordinary single-molecule magnet(SMM)behavior.Its energy barrier U_(eff)/k_(B)was 116.7 K,and the pre-exponential coefficient τ_(0)=1.05×10~(-8)s.CCDC:2359322.展开更多
Two Gd_(2)complexes,namely[Gd_(2)(dbm)_(2)(HL_(1))_(2)(CH_(3)OH)_(2)]·4CH_(3)OH(1)and[Gd_(2)(dbm)_(2)(L_(2))_(2)(CH_(3)OH)_(2)]·2CH_(3)OH(2),where H_(3)L_(1)=(Z)-N'-[4-(diethylamino)-2-hydroxybenzylidene...Two Gd_(2)complexes,namely[Gd_(2)(dbm)_(2)(HL_(1))_(2)(CH_(3)OH)_(2)]·4CH_(3)OH(1)and[Gd_(2)(dbm)_(2)(L_(2))_(2)(CH_(3)OH)_(2)]·2CH_(3)OH(2),where H_(3)L_(1)=(Z)-N'-[4-(diethylamino)-2-hydroxybenzylidene]-2-hydroxyacetohydrazide,H_(2)L_(2)=(E)-N'-(5-bromo-2-hydroxy-3-methoxybenzylidene)nicotinohydrazide,Hdbm=dibenzoylmethane,have been constructed by adopting the solvothermal method.Structural characterization unveils that both complexes 1 and 2 are constituted by two Gd^(3+)ions,two dbm-ions,two CH_(3)OH molecules,and two polydentate Schiff-base ligands(HL_(1)^(2-)or L_(2)^(2-)).In addition,complex 1 contains four free methanol molecules,whereas complex 2 harbors two free methanol molecules.By investigating the interactions between complexes 1 and 2 and four types of bacteria(Bacillus subtilis,Escherichia coli,Staphylococcus aureus,Candida albicans),it was found that both complexes 1 and 2 exhibited potent antibacte-rial activities.The interaction mechanisms between the ligands H_(3)L_(1),H_(2)L_(2),complexes 1 and 2,and calf thymus DNA(CT-DNA)were studied using ultraviolet-visible spectroscopy,fluorescence titration,and cyclic voltammetry.The results demonstrated that both complexes 1 and 2 can intercalate into CT-DNA molecules,thereby inhibiting bacterial proliferation to achieve the antibacterial effects.CCDC:2401116,1;2401117,2.展开更多
The title complex ZnCl 2 (salaad) 2 (salaad= N salicylidene 1 aminoadamantane) was synthesized and characterized by X ray diffraction analysis. The crystal crystallizes in orthorhombic system, space group P bca with a...The title complex ZnCl 2 (salaad) 2 (salaad= N salicylidene 1 aminoadamantane) was synthesized and characterized by X ray diffraction analysis. The crystal crystallizes in orthorhombic system, space group P bca with a =1 503 2(3), b =1 819 5(4), c =2 330 2(5) nm, V =6 373(2) nm, Z =8, D c = 1 348 g/cm 3 , μ =0 971 mm -1 (Mo Kα ), F (000)=2 720. The structure was refined to R =0 048 9 and wR = 0 094 3 for observed 2 978 reflections with I≥2σ(I) . The Zn(Ⅱ) ion has a distorted tetrahedral coordination consisting of two chlorine ions and the two oxygen atoms from two Schiff base ligands.展开更多
A Zinc complex [ZnCl2(HL)2] with Schiff base HL derived from rimantadine and salicylaldehyde was synthesized and characterized by elemental analysis, infrared spectra, 1H NMR spectra,molar conductance, ultraviolet and...A Zinc complex [ZnCl2(HL)2] with Schiff base HL derived from rimantadine and salicylaldehyde was synthesized and characterized by elemental analysis, infrared spectra, 1H NMR spectra,molar conductance, ultraviolet and visible spectra, thermal analysis. Its structure was determined by single crystal X-ray diffraction method. The complex, C38H50Cl2N2O2Zn, crystallizes in the orthorhombic system, space group Aba2 with a=1.381 7(3), b=2.275 0(5), c=1.145 0(2) nm, V=3.599(1) nm3, Z=4, Mr=653.79, F(000)=1 496, Dc=1.301 kg·m-3, μ(Mo Kα)=0.866 mm-1. The kinetic parameters were obtained from the analysis of TG curve by integral methods. The functions of thermal decomposition reaction mechanism are: F(α)=[1-(1-α)1/3]2, and kinetic compensation effect equation lnA=0.019 1E-0.142 7. CCDC: 253297.展开更多
The novel dinuclear copper(Ⅱ) complex with with N (2,4 dihydroxybenzalidene) o aminobenzoic acid ligand, [Cu(C14H9NO4)]2· 2H2O, has been synthesized and characterized by elemental analysis, IR, UV Vis and therma...The novel dinuclear copper(Ⅱ) complex with with N (2,4 dihydroxybenzalidene) o aminobenzoic acid ligand, [Cu(C14H9NO4)]2· 2H2O, has been synthesized and characterized by elemental analysis, IR, UV Vis and thermal analysis. Its crystal structure was determined by single crystal X ray diffraction techniques. The crystal belongs to monoclinic with space group P21/c. The cell parameters are: a=0.82510(11)nm, b=0.68870(9)nm, c=2.3007(3)nm, β =100.847(2)° , V=1.2840(3)nm3, Z=2, Dc=1.742Mg· m- 3, μ (MoKα )=1.723mm- 1, F(000)=684. The structure was refined to final R1=0.0267, wR2=0.0735. The complex molecule structure has dinuclear centrosymmetric dimeric structure in which a planar Cu2O2 core features. The ligand N (2,4 dihydroxybenzalidene) o aminobenzoic acid dianion is μ 2 tridentate, chelating one copper? ion via one nitrogen, one hydroxy oxygen atom and one carboxylate oxygen atom, and the hydroxy oxygen atom simultaneously coordinates to the other copper? ion of the dimer. In the structure the copper? ion rendered four coordination in a distorted square planar geometry structure. CCDC: 212695.展开更多
A new hydrazone Schiff base(N,N′-bis[1-(5-Br-2-methoxyphenol-6-yl)methylidene]benzil dihydrazone)(1)and its copper(II)complex Cu2(L)2·H2O·0.25CH3OH(2)have been synthesized and characterized by IR,elemental ...A new hydrazone Schiff base(N,N′-bis[1-(5-Br-2-methoxyphenol-6-yl)methylidene]benzil dihydrazone)(1)and its copper(II)complex Cu2(L)2·H2O·0.25CH3OH(2)have been synthesized and characterized by IR,elemental analysis,1H-NMR and single-crystal X-ray analysis.The crystal of the complex(2)belongs to triclinic,space group Pī with a=12.993(13),b=14.454(15),c=16.291(17),α=102.309(14)°,β=91.327(14)°,γ=95.526(15)°,V=2972(5)3,Dc=1.642 g/cm3,Z=2,Mr =1469.77,μ(Mo Kα)=3.467mm-1,F(000)=1464.The complex(2)forms a 1D chain-like structure constructed by noncovalent interaction of Cu…N and Cu…Br and π-π stacking interactions.The adjacent chains are further interconnected into a 3D supramolecular architecture by the interaction of Br…Br.The fluorescence of the title compounds(1)and(2)were also discussed.展开更多
The trinuclear nickel? complex Ni3(C11H11N2O3)2(C5H5N)4 was prepared by the reaction of Ni(OAc)2· 4H2O with N butylsalicylhydrazide Schiff base ligand and characterized by X ray crystallography. The crystal belon...The trinuclear nickel? complex Ni3(C11H11N2O3)2(C5H5N)4 was prepared by the reaction of Ni(OAc)2· 4H2O with N butylsalicylhydrazide Schiff base ligand and characterized by X ray crystallography. The crystal belongs to triclinic, Mr=930.91, space group with cell parameters a=9.8489(2)? , b=12.3110(2)? , c=18.4035(3)? , α =71.353(2)° , β =76.638(2)° ,γ =84.815(2)° ,V=2056.72(6)? 3,Z=2,Dc=1.503g· cm- 3, μ (MoKα ) =1.417mm- 1, F(000)=964, R=0.0317, wR=0.0868. A total of 5393 independent reflections were collected, of which 4448 reflections with I ≥ 2σ (I) were observed. There are two centrosymmetrical trinuclear molecules in a unit cell, each molecule exhibits a linear trinuclear metal arrangement with the Ni... Ni... Ni angle of 180° . The interatomic distances between the nickel atoms on the two sides are 9.2030(8)? and 9.1876(9)? for the two molecules, respectively. The central nickel atom adopts an axially elongated octahedral geometry whereas the nickel atoms on the two sides have square planar coordination environment. CCDC: 194083.展开更多
文摘Two new dinuclear lanthanidecomplexes,namely[Ln_(2)(dbm)_(2)(HL)_(2)(CH_(3)OH)_(2)]·4CH_(3)OH[Ln=Tb(1)and Dy(2),Hdbm=dibenzoylmethane]have been synthesized using prepared multidentate Schiff base ligand H_(3)L(hydroxy‑acetic acid(4‑diethylamino‑2‑hydroxy‑benzylidene)‑hydrazide)with good biological activity.Structure characterizations show that the complex comprises two Ln3+ions,two dbm-ions,two HL^(2-)ligands,two CH_(3)OH molecules,and four free methanol molecules.Each Ln^(3+)ion is eight‑coordinated.The two central Lnions are bridged by twoμ_(2)‑O atoms leading to a parallelogram[Ln2O2]core.The interaction between the compounds(H_(3)L,1,and 2)and the calf thymus DNA(CT‑DNA)has been further confirmed by UV‑Vis spectrometry,fluorescence titration,and cyclic voltammetry.The results showed that both 1 and 2 could undergo insertion with CT‑DNA.CCDC:2343005,1;2343006,2.
文摘A tetranuclear Ln(Ⅲ)-based complex:[Dy_(4)(dbm)_(4)(L)_(6)(μ_(3)-OH)_(2)]·CH_(3)CN(1)(HL=5-[(4-methylbenzylidene)amino]quinolin-8-ol,Hdbm=dibenzoylmethane)was manufactured and its structure was characterized in detail.Xray diffraction analysis shows that complex 1 belongs to the monoclinic crystal system and its space group is P2_1/n,which contains a rhombic Dy_(4)core.Magnetic measurements of 1 suggest it possesses extraordinary single-molecule magnet(SMM)behavior.Its energy barrier U_(eff)/k_(B)was 116.7 K,and the pre-exponential coefficient τ_(0)=1.05×10~(-8)s.CCDC:2359322.
文摘Two Gd_(2)complexes,namely[Gd_(2)(dbm)_(2)(HL_(1))_(2)(CH_(3)OH)_(2)]·4CH_(3)OH(1)and[Gd_(2)(dbm)_(2)(L_(2))_(2)(CH_(3)OH)_(2)]·2CH_(3)OH(2),where H_(3)L_(1)=(Z)-N'-[4-(diethylamino)-2-hydroxybenzylidene]-2-hydroxyacetohydrazide,H_(2)L_(2)=(E)-N'-(5-bromo-2-hydroxy-3-methoxybenzylidene)nicotinohydrazide,Hdbm=dibenzoylmethane,have been constructed by adopting the solvothermal method.Structural characterization unveils that both complexes 1 and 2 are constituted by two Gd^(3+)ions,two dbm-ions,two CH_(3)OH molecules,and two polydentate Schiff-base ligands(HL_(1)^(2-)or L_(2)^(2-)).In addition,complex 1 contains four free methanol molecules,whereas complex 2 harbors two free methanol molecules.By investigating the interactions between complexes 1 and 2 and four types of bacteria(Bacillus subtilis,Escherichia coli,Staphylococcus aureus,Candida albicans),it was found that both complexes 1 and 2 exhibited potent antibacte-rial activities.The interaction mechanisms between the ligands H_(3)L_(1),H_(2)L_(2),complexes 1 and 2,and calf thymus DNA(CT-DNA)were studied using ultraviolet-visible spectroscopy,fluorescence titration,and cyclic voltammetry.The results demonstrated that both complexes 1 and 2 can intercalate into CT-DNA molecules,thereby inhibiting bacterial proliferation to achieve the antibacterial effects.CCDC:2401116,1;2401117,2.
文摘The title complex ZnCl 2 (salaad) 2 (salaad= N salicylidene 1 aminoadamantane) was synthesized and characterized by X ray diffraction analysis. The crystal crystallizes in orthorhombic system, space group P bca with a =1 503 2(3), b =1 819 5(4), c =2 330 2(5) nm, V =6 373(2) nm, Z =8, D c = 1 348 g/cm 3 , μ =0 971 mm -1 (Mo Kα ), F (000)=2 720. The structure was refined to R =0 048 9 and wR = 0 094 3 for observed 2 978 reflections with I≥2σ(I) . The Zn(Ⅱ) ion has a distorted tetrahedral coordination consisting of two chlorine ions and the two oxygen atoms from two Schiff base ligands.
文摘A Zinc complex [ZnCl2(HL)2] with Schiff base HL derived from rimantadine and salicylaldehyde was synthesized and characterized by elemental analysis, infrared spectra, 1H NMR spectra,molar conductance, ultraviolet and visible spectra, thermal analysis. Its structure was determined by single crystal X-ray diffraction method. The complex, C38H50Cl2N2O2Zn, crystallizes in the orthorhombic system, space group Aba2 with a=1.381 7(3), b=2.275 0(5), c=1.145 0(2) nm, V=3.599(1) nm3, Z=4, Mr=653.79, F(000)=1 496, Dc=1.301 kg·m-3, μ(Mo Kα)=0.866 mm-1. The kinetic parameters were obtained from the analysis of TG curve by integral methods. The functions of thermal decomposition reaction mechanism are: F(α)=[1-(1-α)1/3]2, and kinetic compensation effect equation lnA=0.019 1E-0.142 7. CCDC: 253297.
文摘The novel dinuclear copper(Ⅱ) complex with with N (2,4 dihydroxybenzalidene) o aminobenzoic acid ligand, [Cu(C14H9NO4)]2· 2H2O, has been synthesized and characterized by elemental analysis, IR, UV Vis and thermal analysis. Its crystal structure was determined by single crystal X ray diffraction techniques. The crystal belongs to monoclinic with space group P21/c. The cell parameters are: a=0.82510(11)nm, b=0.68870(9)nm, c=2.3007(3)nm, β =100.847(2)° , V=1.2840(3)nm3, Z=2, Dc=1.742Mg· m- 3, μ (MoKα )=1.723mm- 1, F(000)=684. The structure was refined to final R1=0.0267, wR2=0.0735. The complex molecule structure has dinuclear centrosymmetric dimeric structure in which a planar Cu2O2 core features. The ligand N (2,4 dihydroxybenzalidene) o aminobenzoic acid dianion is μ 2 tridentate, chelating one copper? ion via one nitrogen, one hydroxy oxygen atom and one carboxylate oxygen atom, and the hydroxy oxygen atom simultaneously coordinates to the other copper? ion of the dimer. In the structure the copper? ion rendered four coordination in a distorted square planar geometry structure. CCDC: 212695.
文摘A new hydrazone Schiff base(N,N′-bis[1-(5-Br-2-methoxyphenol-6-yl)methylidene]benzil dihydrazone)(1)and its copper(II)complex Cu2(L)2·H2O·0.25CH3OH(2)have been synthesized and characterized by IR,elemental analysis,1H-NMR and single-crystal X-ray analysis.The crystal of the complex(2)belongs to triclinic,space group Pī with a=12.993(13),b=14.454(15),c=16.291(17),α=102.309(14)°,β=91.327(14)°,γ=95.526(15)°,V=2972(5)3,Dc=1.642 g/cm3,Z=2,Mr =1469.77,μ(Mo Kα)=3.467mm-1,F(000)=1464.The complex(2)forms a 1D chain-like structure constructed by noncovalent interaction of Cu…N and Cu…Br and π-π stacking interactions.The adjacent chains are further interconnected into a 3D supramolecular architecture by the interaction of Br…Br.The fluorescence of the title compounds(1)and(2)were also discussed.
文摘The trinuclear nickel? complex Ni3(C11H11N2O3)2(C5H5N)4 was prepared by the reaction of Ni(OAc)2· 4H2O with N butylsalicylhydrazide Schiff base ligand and characterized by X ray crystallography. The crystal belongs to triclinic, Mr=930.91, space group with cell parameters a=9.8489(2)? , b=12.3110(2)? , c=18.4035(3)? , α =71.353(2)° , β =76.638(2)° ,γ =84.815(2)° ,V=2056.72(6)? 3,Z=2,Dc=1.503g· cm- 3, μ (MoKα ) =1.417mm- 1, F(000)=964, R=0.0317, wR=0.0868. A total of 5393 independent reflections were collected, of which 4448 reflections with I ≥ 2σ (I) were observed. There are two centrosymmetrical trinuclear molecules in a unit cell, each molecule exhibits a linear trinuclear metal arrangement with the Ni... Ni... Ni angle of 180° . The interatomic distances between the nickel atoms on the two sides are 9.2030(8)? and 9.1876(9)? for the two molecules, respectively. The central nickel atom adopts an axially elongated octahedral geometry whereas the nickel atoms on the two sides have square planar coordination environment. CCDC: 194083.
