新试剂2-(6-甲基-2-苯并噻唑偶氮)-5-二乙氨基酚与铂的显色反应及配合物结构研究  

STUDY OF THE COLOUR REACTION OF PLATINUM WITH THE NEW REAGENT 2-(6-METHYL-2-BENZOTHIAZOLYLAZO)-5- DIETHYLAMINOPHENOL (MBTAE) AND ITS STRUCTURE

作　　者：王园朝 

机构地区：[1]咸宁师范专科学校化学系,咸宁437005

出　　处：《理化检验（化学分册）》2000年第1期5-7,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：湖北省教委青年自然科学基金

摘　　要：研究新试剂 2 - ( 6-甲基 - 2 -苯并噻唑偶氮 ) - 5-二乙氨基酚 ( MBTAE)与铂的显色反应。在 1 -羟基 - 2 -萘甲酸 ( R)存在下 ,于 p H5.5的乙酸盐缓冲溶液中 ,形成配位比为 Pt∶MBTAE∶ R=1∶ 1∶ 1的三元配合物 ,λmax=592 nm,表观摩尔吸光系数 ε=6.84× 1 0 4 L·mol- 1·cm- 1。通过配合物的紫外和红外光谱性质 ,研究了三元配合物的结构 ,方法应用于催化剂中铂的测定 ,结果满意。It is found that in an acetate buffer medium, a ternary complex between Pt(Ⅳ), MBTAE and 1 hydroxy 2 naphthalene carboxylic acid (R). The mole ratio of this complex is found to be Pt(Ⅳ)∶MBTAE∶R=1∶1∶1. The absorption maxima of this complex lies at 592nm and its molar absorptivity is 6.84×10 4L·mol -1 ·cm -1 . The structure of this ternary complex is studied by means of IR and UV spectrometry. The proposed method has been applied to the determination of Pt(Ⅳ) in certain catalyst.

关 键 词：吸光光度法 铂 三元配合物 MBTAE 显色反应 

分 类 号：O614.826[理学—无机化学] O657.32[理学—化学]