FLUORENONE HYDRAZINE-S-BENZYLDITHIOCARBAZATE TRANSITION-METAL COMPLEXES

被引：47

作者：

ELSONBATI, AZ ^{[1
]}

MABROUK, EM ^{[1
]}

MEGAHED, HE ^{[1
]}

机构：

[1] BENHA UNIV,FAC SCI,DEPT CHEM,BENHA,EGYPT

来源：

TRANSITION METAL CHEMISTRY | 1991年 / 16卷 / 02期

关键词：

D O I：

10.1007/BF01032853

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

New Cu(II), Co(II), Ni(II), Cd(II), Zn(II), Hg(II), Pd(II) and UO2(II) complexes of the Schiff base ligand (FBz) formed by condensation of fluorenone with S-benzyldithiocarbazate have been prepared and characterized by elemental analysis, magnetic and spectroscopic measurements. The Cu(FBz)2(Cl)2 complex is paramagnetic. The Ni(FBz-H)2 complex is diamagnetic, four-coordinate and square planar. The Co(II) ion is oxidized in the presence of the Schiff base with the concomitant formation of a Co(III) complex of empirical formulae Co(FBz)Cl3OH2. The ligand was tested as a corrosion inhibitor for copper. Inhibition efficiency was calculated and the limiting concentration of FBz to give maximum efficiency was 10(-3) mol dm-3 at 25-degrees-C. The polarographic reduction of FBz was investigated in Britton-Robinson buffer solutions of pH 3-10. The polarograms at dme indicated that the depolarizer is reduced through two two-electron irreversible diffusion-controlled waves. The mechanistic pathway of the electrode reaction is commensurate with this result.

引用

页码：280 / 284

页数：5