DIRECT ELECTROCHEMICAL SYNTHESIS AND CHARACTERIZATION OF NEODIMIUM( Ⅱ ) COMPLEX WITH 2-HYDROXY-2,4,6- CYCLOHEPTATRIENONE(TROPOLONE)

Tris(tropolonato)neodimium( Ⅲ )has been prepared by the electrochemical oxidation of neodimium meral anode in acetonitrile solution of 2-hydroxy - 2,4,6 - cycloheptatrienone(tropolone). The unusual divalent neodimium complex was formed at the first step of electrosyn - thesis. The final product ,Nd (C7H6O2)3, has been characterized by microanalysis and the studies of IR and H, C3 NMR spectra.     

原子吸收分光光度法测定胃粘膜中的Zn/Cu值

本文报导话检胃粘膜样品中痕量铜和锌的原子吸收法测定。采用了微痕量分析技术;用硝酸—过氧化氢硝解试样;石墨炉原子吸收法测定铜;火焰原子吸收法测定锌。样品的检出跟:铜1.7μg/g;锌8.0μg/g,回收率和精密度,可以满足微痕量分析的要求。本法快速简单,适用于人体组织活检样品中Zn/Cu值的测定,为临床诊断提供数据。     

二(正辛基)亚砜(DOSO)萃取紫外吸光光度法测定钯

本文研究了二正辛基亚砜(DOSO)萃取紫外分光光度法测定样品中微量钯的分析方法。结果表明,在1.0mol/L盐酸介质中.0.30mol/LDOSO—甲苯溶液能定量萃取钯。萃合物在有机相中波长为307nm处有一特征吸收峰,表观摩尔吸光系数为1.6×10~4 L·mol~(-1)·cm~1。钯量在0.5～15μg/ml范围内服从比尔定律,相关系为0.9974。测定了实际样品中钯的含量,测定结果与标准方法基本一致。     

Au(PPh3)nX(X=Cl,Br,I)的电化学合成

以Au、PPh3、NH4X(或I2)为原料,通过电化学方法合成得到Au(PPh3)nX(X=Cl,Br,n=1;X=I,n=2)配合物.研究了电合成机理,讨论了电解电压对电化学效率的影响.I2作为反应原料,为Au(PPh3)nI的合成提供了新的途径.     

DIRECT ELECTROCHEMICAL SYNTHESIS AND CHARACTERIZATION OF NEODIMIUM （Ⅲ） COMPLEX WITH 2-HYDROXY-2,4,6-CYCLOHEPTATRIENONE（TROPOLONE）

Tris(tropolonato)neodimium(Ⅲ）has been prepared by the electrochemical oxidation of neodimium metal anode in acetonitrile solution of 2-hydroxy-2,4,6-cycloheptatrienone(tropolone).The unusual divalent neodimium complex was formed at the first step of electrosyn-thesis.The final product,Nd(C7H6O2)3,has been characterized by microanalysis and the studies of IR and ^1H,C3 NMR spectra.