The reaction of 4,4?-diaminodiphenylmethane (dadm), malonic acid (H2mal) and Cu(NO3)2 in aqueous solution results in a discrete binuclear Cu(II) macrocycle: [Cu(dadm)(mal)- (H2O)]22H2O. It crystallizes in monoclinic, ...The reaction of 4,4?-diaminodiphenylmethane (dadm), malonic acid (H2mal) and Cu(NO3)2 in aqueous solution results in a discrete binuclear Cu(II) macrocycle: [Cu(dadm)(mal)- (H2O)]22H2O. It crystallizes in monoclinic, space group P21/c with a = 15.231(3), b = 11.847(2), c = 9.801(2) ? b = 106.75(3)o, V = 1693.5(6) 3, Z = 2, C32H40Cu2N4O12, Mr = 799.76, Dc = 1.568 g/cm3, ?(MoKa) = 0.71073 ? = 1.325 mm-1, F(000) = 828, the final R = 0.0531 and wR = 0.1244 for 3421 observed reflections with I > 2s(I). Each Cu(II) is coordinated by two oxygen atoms from a mal ligand, two nitrogen atoms from two dadm ligands and a water oxygen atom to form a triangle bipyramidal motif. The title compound possesses a distorted macrocycle enclosed by dadm with approximate dimensions of 8.3 ??5.9 ?展开更多
基于在pH 8.6的甘氨酸-氢氧化钠-乙腈体系中,硼氢化钠可以将孔雀石绿(MG)定量还原为隐性孔雀石绿(LMG)从而具有荧光,表面活性剂十二烷基磺酸钠(SDS)的加入能使LMG荧光强度增强并稳定,建立了测定水产品中MG和LMG的同步荧光分光光度法.用...基于在pH 8.6的甘氨酸-氢氧化钠-乙腈体系中,硼氢化钠可以将孔雀石绿(MG)定量还原为隐性孔雀石绿(LMG)从而具有荧光,表面活性剂十二烷基磺酸钠(SDS)的加入能使LMG荧光强度增强并稳定,建立了测定水产品中MG和LMG的同步荧光分光光度法.用正交试验设计对测定的实验条件进行了优化,结果发现:0.70 m L的甘氨酸-氢氧化钠-乙腈体系(pH 8.6),0.30 m L 0.2 mol/L Na BH4,0.50 m L浓度为1×10-4mol/L的SDS,避光放置7 min,以同步波长差△λ=98 nm进行同步荧光扫描,MG浓度在1.0×10-7~1.0×10-6mol/L线性范围与其同步荧光强度成正比,相关系数r为0.998,检出限为2.4×10-8mol/L.应用于水产品中MG和LMG的测定,加标回收率为95.3%~101.3%,RSD为4.2%~6.7%.展开更多
A new inorganic-organic hybrid supramolecular compound [Habo]6[V10O28]·2C3H7OH·2H2O 1 （abo = R（-）-2-amino-1-butanol） has been synthesized from VO2^＋ in organic solvents and its crystal structure was rep...A new inorganic-organic hybrid supramolecular compound [Habo]6[V10O28]·2C3H7OH·2H2O 1 （abo = R（-）-2-amino-1-butanol） has been synthesized from VO2^＋ in organic solvents and its crystal structure was reported as follows： monoclinic, space group P21/n, a = 11.419（9）, b = 16.811（16）, c = 15.521（12） A, β= 102.98（2）°, V= 2903（4） A^3, Z = 4, C15H46N3O19V5, Mr = 827.25, Dc = 1.893 g/cm^3, 2（MoKα） = 0.71073 A, μ = 1.636 mm^-1, F（000） = 1696, the final R = 0.0696 and wR = 0.1361 for 4641 observed reflections with I 〉 2σ（I）. The compound is based on decavanadate clusters [V10O28]^6-. The hydrogen bonding interactions among Habo^＋ cations, solvents and decavanadate clusters extend 1 into a three-dimensional supramolecular architecture.展开更多
文摘The reaction of 4,4?-diaminodiphenylmethane (dadm), malonic acid (H2mal) and Cu(NO3)2 in aqueous solution results in a discrete binuclear Cu(II) macrocycle: [Cu(dadm)(mal)- (H2O)]22H2O. It crystallizes in monoclinic, space group P21/c with a = 15.231(3), b = 11.847(2), c = 9.801(2) ? b = 106.75(3)o, V = 1693.5(6) 3, Z = 2, C32H40Cu2N4O12, Mr = 799.76, Dc = 1.568 g/cm3, ?(MoKa) = 0.71073 ? = 1.325 mm-1, F(000) = 828, the final R = 0.0531 and wR = 0.1244 for 3421 observed reflections with I > 2s(I). Each Cu(II) is coordinated by two oxygen atoms from a mal ligand, two nitrogen atoms from two dadm ligands and a water oxygen atom to form a triangle bipyramidal motif. The title compound possesses a distorted macrocycle enclosed by dadm with approximate dimensions of 8.3 ??5.9 ?
文摘基于在pH 8.6的甘氨酸-氢氧化钠-乙腈体系中,硼氢化钠可以将孔雀石绿(MG)定量还原为隐性孔雀石绿(LMG)从而具有荧光,表面活性剂十二烷基磺酸钠(SDS)的加入能使LMG荧光强度增强并稳定,建立了测定水产品中MG和LMG的同步荧光分光光度法.用正交试验设计对测定的实验条件进行了优化,结果发现:0.70 m L的甘氨酸-氢氧化钠-乙腈体系(pH 8.6),0.30 m L 0.2 mol/L Na BH4,0.50 m L浓度为1×10-4mol/L的SDS,避光放置7 min,以同步波长差△λ=98 nm进行同步荧光扫描,MG浓度在1.0×10-7~1.0×10-6mol/L线性范围与其同步荧光强度成正比,相关系数r为0.998,检出限为2.4×10-8mol/L.应用于水产品中MG和LMG的测定,加标回收率为95.3%~101.3%,RSD为4.2%~6.7%.
基金This work was supported by the National Natural Science Foundation of China and Natural Science Foundation of Fujian Province
文摘A new inorganic-organic hybrid supramolecular compound [Habo]6[V10O28]·2C3H7OH·2H2O 1 （abo = R（-）-2-amino-1-butanol） has been synthesized from VO2^＋ in organic solvents and its crystal structure was reported as follows： monoclinic, space group P21/n, a = 11.419（9）, b = 16.811（16）, c = 15.521（12） A, β= 102.98（2）°, V= 2903（4） A^3, Z = 4, C15H46N3O19V5, Mr = 827.25, Dc = 1.893 g/cm^3, 2（MoKα） = 0.71073 A, μ = 1.636 mm^-1, F（000） = 1696, the final R = 0.0696 and wR = 0.1361 for 4641 observed reflections with I 〉 2σ（I）. The compound is based on decavanadate clusters [V10O28]^6-. The hydrogen bonding interactions among Habo^＋ cations, solvents and decavanadate clusters extend 1 into a three-dimensional supramolecular architecture.
