A polynuclear complex containing a monomer of Cu(Ⅱ)-Zn(Ⅱ) heterobinuclear unit was synthesized and characterized by IR spectra and magnetic moment. The crystal and molecular structure of the complex, CuZnC_(19)H_(24...A polynuclear complex containing a monomer of Cu(Ⅱ)-Zn(Ⅱ) heterobinuclear unit was synthesized and characterized by IR spectra and magnetic moment. The crystal and molecular structure of the complex, CuZnC_(19)H_(24)Cl_4N_2O_2, was determined by X-ray diffraction, it crystallized in monoclinic, P2_1 / m, a = 8.812 (2), b = 15.972(3), c = 8.831(1) A, β = 114.33(1)°, V = 1132.4A^3, Z=2, D_c= 1.710 g / cm^3, λ(Mo K_α) = 0.71073A, μ = 25.227 cm^(-1), R = 0.051. R_w = 0.063 for 1130 ob- served reflections with I> 3σ(I) . The coordinated octahedra of Cu(Ⅱ) and tetrahedra of Zn(Ⅱ) via bridging Cl atoms form a single chain polynuclear complex. The Cu, Zn and bridging Cl atoms are located on the crystallographic symmetry plane m which is perpendicular to 2N and 2O donor plane.展开更多
以邻硝基甲苯和邻硝基苯甲醛为起始原料,在50%NaOH溶液和相转移催化剂作用下,先缩合得到2,2’-二硝基二苯乙烯,2,2’-二硝基二苯乙烯在铁粉、氯化铵、乙醇体系中还原得到2,2’-二氨基二苯乙烯,最后2,2’-二氨基二苯乙烯在无水磷酸中环...以邻硝基甲苯和邻硝基苯甲醛为起始原料,在50%NaOH溶液和相转移催化剂作用下,先缩合得到2,2’-二硝基二苯乙烯,2,2’-二硝基二苯乙烯在铁粉、氯化铵、乙醇体系中还原得到2,2’-二氨基二苯乙烯,最后2,2’-二氨基二苯乙烯在无水磷酸中环合制得二苯并[b,f][1,2]二氮芳辛,并对反应条件进行了优化,总收率约为43.2%。其结构经LC-MS和1 H NMR确认。展开更多
Bis[1-hydroxyalkylbenzo]-21-crown-7 (A-C) have been synthesized by ) two-step reactions from dibenzo-21-crown-7 (DB21C7). Extraction of cesium cation from nitric acid solutions by A-C has been investigated in nitromet...Bis[1-hydroxyalkylbenzo]-21-crown-7 (A-C) have been synthesized by ) two-step reactions from dibenzo-21-crown-7 (DB21C7). Extraction of cesium cation from nitric acid solutions by A-C has been investigated in nitromethane. Under the conditions of various concentration of HNO3 or NaNO3, the extractabilities of A and B were superior to that of DB21C7.展开更多
Various xanthenes have been synthesized by the condensation ofβ-naphthol,2-hydroxynaphthalene-1,4-dione or dimedone with various aldehydes in the presence of trifluoroacetic acid as catalyst in 1,1,3,3-N,N,N′,N′-te...Various xanthenes have been synthesized by the condensation ofβ-naphthol,2-hydroxynaphthalene-1,4-dione or dimedone with various aldehydes in the presence of trifluoroacetic acid as catalyst in 1,1,3,3-N,N,N′,N′-tetramethylguanidinium trifluoroacetate （TMGT） ionic liquid within 1 h at 75℃.展开更多
Novel spiro[dibenzo[a,i]xanthene-14,3＇-indoline]-2＇,8,13-triones were prepared by the three-component reaction ofβ-naphthol, isatins,and 2-hydroxy-1,4-naphoquinone in the presence of a catalytic amount of H_4SiW_...Novel spiro[dibenzo[a,i]xanthene-14,3＇-indoline]-2＇,8,13-triones were prepared by the three-component reaction ofβ-naphthol, isatins,and 2-hydroxy-1,4-naphoquinone in the presence of a catalytic amount of H_4SiW_（12）O_（40）.This protocol provides a simple one-step procedure with the advantages of easy work-up,mild reaction conditions and environmentally benign.展开更多
文摘A polynuclear complex containing a monomer of Cu(Ⅱ)-Zn(Ⅱ) heterobinuclear unit was synthesized and characterized by IR spectra and magnetic moment. The crystal and molecular structure of the complex, CuZnC_(19)H_(24)Cl_4N_2O_2, was determined by X-ray diffraction, it crystallized in monoclinic, P2_1 / m, a = 8.812 (2), b = 15.972(3), c = 8.831(1) A, β = 114.33(1)°, V = 1132.4A^3, Z=2, D_c= 1.710 g / cm^3, λ(Mo K_α) = 0.71073A, μ = 25.227 cm^(-1), R = 0.051. R_w = 0.063 for 1130 ob- served reflections with I> 3σ(I) . The coordinated octahedra of Cu(Ⅱ) and tetrahedra of Zn(Ⅱ) via bridging Cl atoms form a single chain polynuclear complex. The Cu, Zn and bridging Cl atoms are located on the crystallographic symmetry plane m which is perpendicular to 2N and 2O donor plane.
文摘以邻硝基甲苯和邻硝基苯甲醛为起始原料,在50%NaOH溶液和相转移催化剂作用下,先缩合得到2,2’-二硝基二苯乙烯,2,2’-二硝基二苯乙烯在铁粉、氯化铵、乙醇体系中还原得到2,2’-二氨基二苯乙烯,最后2,2’-二氨基二苯乙烯在无水磷酸中环合制得二苯并[b,f][1,2]二氮芳辛,并对反应条件进行了优化,总收率约为43.2%。其结构经LC-MS和1 H NMR确认。
文摘Bis[1-hydroxyalkylbenzo]-21-crown-7 (A-C) have been synthesized by ) two-step reactions from dibenzo-21-crown-7 (DB21C7). Extraction of cesium cation from nitric acid solutions by A-C has been investigated in nitromethane. Under the conditions of various concentration of HNO3 or NaNO3, the extractabilities of A and B were superior to that of DB21C7.
基金the financial support of the Research Council of the University of Isfahan.
文摘Various xanthenes have been synthesized by the condensation ofβ-naphthol,2-hydroxynaphthalene-1,4-dione or dimedone with various aldehydes in the presence of trifluoroacetic acid as catalyst in 1,1,3,3-N,N,N′,N′-tetramethylguanidinium trifluoroacetate （TMGT） ionic liquid within 1 h at 75℃.
基金the financial support from Xinxiang Medical University
文摘Novel spiro[dibenzo[a,i]xanthene-14,3＇-indoline]-2＇,8,13-triones were prepared by the three-component reaction ofβ-naphthol, isatins,and 2-hydroxy-1,4-naphoquinone in the presence of a catalytic amount of H_4SiW_（12）O_（40）.This protocol provides a simple one-step procedure with the advantages of easy work-up,mild reaction conditions and environmentally benign.
