2-[(卤代苯胺基)羰基]苯甲酸与Cu(Ⅱ)、Ni(Ⅱ)、Co(Ⅱ)的配合物研究

本文报道了4种2-[(卤代苯胺(?))羰基]苯甲酸与Cu(Ⅱ)、Ni(Ⅱ)、Co(Ⅱ)配合物的制备,并通过元素分析、热重分析、红外光谱和电子光谱分析以及磁化率测定对它们进行了表征.结果证明,配合物是通过羧酸根上羟基氧原子和酰胺羰基上氧原子配位成键,除Cu(Ⅱ)配合物分子为平面正方形结构外.其余均为八面体结构,只是扭曲程度不同.并对它们的配位场参数进行了计算.     

SYNTHESES AND SPECTROSCOPIC PROPERTIES OF LANTHANIDE COMPLEXES, Ln(acac)_3(Ph_3PO)_3

A series of new complexes of formula Ln(acac)_s(Ph_3PO)_3 (where Ln~(3+)=Nd~(3+), Sm~(3+), Eu~(3+), Tb~(3+), Ho~(3+)) have been prepared and characterized. The coordination of two ligands with lanthanide ions are studied by IR spectra, ~1H, ~(13)C, ~(31)P-NMR and metal-ligand charge tranafer tranaition is also discussed via electronic adaorption and luminescence spectroscopy.     

化学计量学研究及其应用

本文介绍了化学计量学的产生、发展、研究内容及主要应用,对有关工作进行了评述。     

卡尔曼滤波滴定分析法研究(Ⅰ)——热力学平衡滴定模型及其应用

卡尔曼滤波(简称KF)为一种最佳滤波方法,是化学计量学分辨和校正的有效工具。滴定时,考察滴定过程中滴定体积与量测信号的变化,可建立相应的状态与量测方程,用KF递推算法估计状态并确定终点。本文拟分析热力学平衡滴定模型并考察某些参数的影响。     

风毛菊化学成分研究（Ⅰ）

从风毛菊中分离得到16种化合物,经光谱方法鉴定为山奈素-3-O-(6＂-O-巴豆酰)-β-D-葡萄糖甙(1)、槲皮素-3-O-(6＂-O-巴豆酰)-β-D-葡萄糖甙(2)、丁香甙甲醚(3))、山奈素-3-O-β-D-葡萄糖甙、槲皮素-3-O-β-D-葡萄糖甙、丁香甙、α-香树脂醇棕榈酸酯、β-香树酯醇棕榈酸酯、羽扇豆醇棕榈酸酯、羽扇豆醇乙酸酯、羽扇豆醇、β-谷甾醇、棕榈酸、二十四烷酸、二十六烷酸、二十五烷烃,其中(1)、(2)和(3)为新化合物。     

掺杂阴离子对电化学合成的聚邻甲苯胺性质的影响

邻甲苯胺在酸性介质中的聚合速率与酸的种类有关,聚合速率影响了各种掺杂阴离子聚合物膜的形态,聚合物的电导率、循环伏安曲线形状受掺杂阴离子的影响,其电容量与掺杂阴离子的种类及形态有关,阴离子的种类对电极电位和紫外-可见光谱无影响。     

Preparation and Characterization of Monodispersed Co2O3 Ultrafine Particle Sol

The present, paper contains a new composite material Co_2O_3UFP sol prepared by using W/O microemulsion method, and its size distribution, interracial and optical nonlincar properties are discussed. The method for the preparation of UFP sol is as follows: at first, CoCl_2 and DBS so-     

吸附溶出伏安法测定痕量硒——铜离子对二溴代苤硒脑体系的增敏作用

本文发现Cu~(2+)离子对二溴代苤硒脑在悬汞电极上的吸附溶出行为有显著增敏作用,从而建立了灵敏度高、选择性好的测定痕量硒的吸附溶出伏安法。线性范围为0.02～50ng/ml,检出下限达5×10~(-4)ng/ml。本文初步探讨了Cu~(2+)的增敏机制。     

Comparison of ion-exchange chromatography, isoelectric precipitation and reversed-phase high-performance liquid chromatography for the separation of individual cardiac myosin light chains.

Three modified procedures for the separation of cardiac myosin light chains are carefully compared. Ion-exchange chromatography gives a purified cardiac myosin light chain 1, whereas light chain 2 is always contaminated by light chain 1. Reversed-phase high-performance liquid chromatography gives the best resolution of these light chains and needs only 20 min for each run. However, it requires pure preparation of myosin light chains before separation. Isoelectric precipitation is the simplest procedure and suitable for large quantities of material. Although it gives the highest yield the separation is not adequate. A modified and rapid procedure for the isolation of cardiac and skeletal total myosin light chains is also presented.