一类新的多功能构筑基块-多吡唑化合物的设计合成

The design and synthesis of novel polypyrazolyl aromatic bridging ligands 1,3,5-tris（3,5-dimethyl-1-pyrazol-4-yl）benzene and 2,4,6-tris（4-（3,5-dimethyl-^1H-pyrazol-4-yl）phenyl）-1,3,5-triazine from simple starting materials mesitylene and p-tolunitrile were reported.     

双吡唑双齿桥联环状四核钯(II)配合物的合成和结构研究

A bipyrazolato-bridged tetra-palladium(II) cyclic complex, {[(dmbpy)Pd]₂(μ-L)}·(PF₆)₄·2(C₄H₁₀O)·(H₂O) ( μ-L=1,2-bis(3,5-dimethyl-pyrazol-4-yl)benzene), was synthesized and characterized by the ¹H NMR, element analysis, and its single crystal structure was determined by X-ray diffraction method. It crystallizes in the Tetragonal space group P4/mbm with unit cell parameters: a=2.020 0(1) nm, b=2.020 0(1) nm, c=1.281 4(1) nm, and V=5.228 5(5) nm³, Z=2, R=0.047 8, wR=0.083 9. The crystal structure revealed that two [(dmbpy)Pd]₂ moieties were bridged by two bipyrazolate ligands to form a tetra-palladium(II) cyclic complex. The Pd…Pd separation within the complex is 0.315 5(1) nm, indicat-ing weak interaction. CCDC: 645322.     

阻抑动力学光度法测定乳品中的痕量碘

研究了在稀H2SO4介质中,痕量I-对KBrO3氧化酸性品红的阻抑作用及其动力学条件,建立了测定痕量I-的阻抑动力学光度分析的新方法.测定I-的线性范围为0～0.04 μg/mL,检出限为1.1×10-9 g/mL.已用于乳品中痕量碘的测定.