1 Introduction The Suzuki cross-coupling reaction is a powerful and versatile method for the generation of unsymmetrical biaryls from arylboronic acids and aryl halides in a single step. However, the reaction is usua...1 Introduction The Suzuki cross-coupling reaction is a powerful and versatile method for the generation of unsymmetrical biaryls from arylboronic acids and aryl halides in a single step. However, the reaction is usually performed in the presence of Pd catalyst along with phosphine ligand, which sometimes creates practical problems because organophosphines tend to be expensive, poisonous, and air sensitive. Recently, phos-phine-free ligands,展开更多
The crystal and molecular structure of [CoCl2(N4 trzCH2CH2COPh)4]·6H2O (trz=1,2,4 triazole) has been determined by X ray diffraction. It crystallizes in the monoclinic system, space group P21/c, with unit cell pa...The crystal and molecular structure of [CoCl2(N4 trzCH2CH2COPh)4]·6H2O (trz=1,2,4 triazole) has been determined by X ray diffraction. It crystallizes in the monoclinic system, space group P21/c, with unit cell parameters a=0.8039(2)nm, b=1.0822(2)nm, c=2.9013(6)nm, β=94.79(3)°, and Z=4. Each cobalt atom is coordinated by four N atoms of triazole from four 1 propiophenone 1,2,4 triazole ligands and two chloride anion in cis arrangement with almost perfect octahedral coordination geometry. In addition to the coordinating cobalt complex, there are six uncoordinated water molecules, which complete the crystal structure. In the solid state, the title compound forms three dimensional network structure through hydrogen bonds. The intermolecular hydrogen bonds connect the [CoCl2(C2H2N3CH2CH2COPh)4] and H2O moieties. CCDC: 200711.展开更多
Using a new ligand 1,6-bis(1,2,4-triazole-1-yl)hexane (L), one-dimensional coordination polymer Cu2(L)(CH3CO2)4n has been synthesized and characterized by elemental analysis, FTIR spectra and X-ray single crystal stru...Using a new ligand 1,6-bis(1,2,4-triazole-1-yl)hexane (L), one-dimensional coordination polymer Cu2(L)(CH3CO2)4n has been synthesized and characterized by elemental analysis, FTIR spectra and X-ray single crystal structural analysis. The title complex crystallizes in triclinic system with space group P1, a=0.722 5(7) nm, b=0.808 0(8) nm, c=1.173 1(11) nm, α=72.294(11)°, β=88.049(11)°, γ=66.294(11)°, V=0.594 2(10) nm3, Z=1, R1=0.037 0, wR2=0.098 3. The fundamental unit comprises two copper atoms (Cu(1), Cu(1A)), four μ2-bridged CH3CO2- and one ligand molecule. Cu(1) and Cu(1A) are both five-coordinated by four oxygen atoms from four μ2-CH3CO2- and one nitrogen atom from bridging ligand, forming a distorted square-pyramidal coordination configuration. Cu(1) and Cu(1A) are linked via four μ2-bridged CH3CO2- anions to form a paddle-wheel structural unit, which furthermore self-assemble into 1D chain via bridging ligands. CCDC: 603429.展开更多
The mononuclear complex, [NiCl 2(trzCH 2CH 2COPh) 4]·6H 2O (trz=1,2,4-triazole), was synthesized and its structure was determined by single crystal X-ray determination. It crystallizes in the monoclinic syst...The mononuclear complex, [NiCl 2(trzCH 2CH 2COPh) 4]·6H 2O (trz=1,2,4-triazole), was synthesized and its structure was determined by single crystal X-ray determination. It crystallizes in the monoclinic system, space group P2 1/c, with lattice parameters: a= 0.80391(2) nm, b= 1.08215(2) nm, c=2.90133(2) nm, β=94.792 (1)° and Z=2. Each nickel atom is coordinated by four N atoms of triazole from four β-(1,2,4-triazole-1-yl)propiophenone ligands and two chloride anions in trans arrangement with octahedral coordination geometry. In addition to the coordinating nickel complex, there are six uncoordinated water molecules. The Ni-Cl distance is 0.24865(8) nm and the Ni-N distances are in the range of 0.2072(2) to 0.2099(2) nm, respectively. In the solid state, the title compound forms three dimensional network structure through hydrogen bonds. The intermolecular hydrogen bonds connect the [NiCl 2(C 2H 2N 3CH 2CH 2COPh) 4] and H 2O moieties. The deep green crystals were also examined by elemental analysis, FT-IR and UV spectra, which are in agreement with the structural data.展开更多
Several d-metal perchlorate complexes with 3-hydrazino-4-amino-5-R-1,2,4-triazoles as ligands （where R=H, CH3, SH） were investigated. It was shown that SH-group inhibited radical processes of thermal decomposition a...Several d-metal perchlorate complexes with 3-hydrazino-4-amino-5-R-1,2,4-triazoles as ligands （where R=H, CH3, SH） were investigated. It was shown that SH-group inhibited radical processes of thermal decomposition and burning of the complexes and also increased the thresholds of their Q-switch IR-laser initiation compared with the salts where as R=H, CH3-groups decreased the sensitivity of the metal complexes to laser initiation.展开更多
基金Supported by the Zhejiang Province Natural Science Foundation,China(No.Y407240)
文摘1 Introduction The Suzuki cross-coupling reaction is a powerful and versatile method for the generation of unsymmetrical biaryls from arylboronic acids and aryl halides in a single step. However, the reaction is usually performed in the presence of Pd catalyst along with phosphine ligand, which sometimes creates practical problems because organophosphines tend to be expensive, poisonous, and air sensitive. Recently, phos-phine-free ligands,
文摘The crystal and molecular structure of [CoCl2(N4 trzCH2CH2COPh)4]·6H2O (trz=1,2,4 triazole) has been determined by X ray diffraction. It crystallizes in the monoclinic system, space group P21/c, with unit cell parameters a=0.8039(2)nm, b=1.0822(2)nm, c=2.9013(6)nm, β=94.79(3)°, and Z=4. Each cobalt atom is coordinated by four N atoms of triazole from four 1 propiophenone 1,2,4 triazole ligands and two chloride anion in cis arrangement with almost perfect octahedral coordination geometry. In addition to the coordinating cobalt complex, there are six uncoordinated water molecules, which complete the crystal structure. In the solid state, the title compound forms three dimensional network structure through hydrogen bonds. The intermolecular hydrogen bonds connect the [CoCl2(C2H2N3CH2CH2COPh)4] and H2O moieties. CCDC: 200711.
文摘Using a new ligand 1,6-bis(1,2,4-triazole-1-yl)hexane (L), one-dimensional coordination polymer Cu2(L)(CH3CO2)4n has been synthesized and characterized by elemental analysis, FTIR spectra and X-ray single crystal structural analysis. The title complex crystallizes in triclinic system with space group P1, a=0.722 5(7) nm, b=0.808 0(8) nm, c=1.173 1(11) nm, α=72.294(11)°, β=88.049(11)°, γ=66.294(11)°, V=0.594 2(10) nm3, Z=1, R1=0.037 0, wR2=0.098 3. The fundamental unit comprises two copper atoms (Cu(1), Cu(1A)), four μ2-bridged CH3CO2- and one ligand molecule. Cu(1) and Cu(1A) are both five-coordinated by four oxygen atoms from four μ2-CH3CO2- and one nitrogen atom from bridging ligand, forming a distorted square-pyramidal coordination configuration. Cu(1) and Cu(1A) are linked via four μ2-bridged CH3CO2- anions to form a paddle-wheel structural unit, which furthermore self-assemble into 1D chain via bridging ligands. CCDC: 603429.
基金theNaturalScienceFoundationofShandongProvince (No .Y2 0 0 2B0 6 )andtheOutstandingAdult YoungScientificResearchEncouragingFoundationofShandongProvince (No .O1BS18)
文摘The mononuclear complex, [NiCl 2(trzCH 2CH 2COPh) 4]·6H 2O (trz=1,2,4-triazole), was synthesized and its structure was determined by single crystal X-ray determination. It crystallizes in the monoclinic system, space group P2 1/c, with lattice parameters: a= 0.80391(2) nm, b= 1.08215(2) nm, c=2.90133(2) nm, β=94.792 (1)° and Z=2. Each nickel atom is coordinated by four N atoms of triazole from four β-(1,2,4-triazole-1-yl)propiophenone ligands and two chloride anions in trans arrangement with octahedral coordination geometry. In addition to the coordinating nickel complex, there are six uncoordinated water molecules. The Ni-Cl distance is 0.24865(8) nm and the Ni-N distances are in the range of 0.2072(2) to 0.2099(2) nm, respectively. In the solid state, the title compound forms three dimensional network structure through hydrogen bonds. The intermolecular hydrogen bonds connect the [NiCl 2(C 2H 2N 3CH 2CH 2COPh) 4] and H 2O moieties. The deep green crystals were also examined by elemental analysis, FT-IR and UV spectra, which are in agreement with the structural data.
文摘Several d-metal perchlorate complexes with 3-hydrazino-4-amino-5-R-1,2,4-triazoles as ligands （where R=H, CH3, SH） were investigated. It was shown that SH-group inhibited radical processes of thermal decomposition and burning of the complexes and also increased the thresholds of their Q-switch IR-laser initiation compared with the salts where as R=H, CH3-groups decreased the sensitivity of the metal complexes to laser initiation.
