Chromium, molybdenum and ruthenium complexes of chloranilic acid

被引：15

作者：

Ali, SA

Khalil, MMH

Ramadan, RM ^{[1
]}

机构：

[1] Ain Shams Univ, Fac Sci, Dept Chem, Cairo, Egypt

[2] Ain Shams Univ, Univ Coll Girls, Dept Chem, Cairo, Egypt

来源：

TRANSITION METAL CHEMISTRY | 2000年 / 25卷 / 02期

关键词：

D O I：

10.1023/A:1007064732113

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Chloranilic acid (H(2)CA) reacts with Cr(CO)(6) and CrCl3 to give the tris derivatives Cr(H(2)CA)(3) and Cr(HCA)(3). Spectroscopic measurements on the two complexes reveal that the ligand-metal bond is of the semiquinone type. Susceptibility determinations showed effective magnetic moments of 1.82 and 1.07 mu(B). Examination of Cr(H(2)CA)(3) by cyclic voltammetry revealed two redox reactions due to tautomeric interconversion through electron transfer. Boiling Mo(CO)(6) with H(2)CA in air gave MoO3(HCA) in which the molybdenum atom is in the + 5 oxidation state. The i.r. spectrum of the MoO3(HCA) displayed bands due to terminal M=O bonds. The cluster compound Ru-3(CO)(1)2 reacted with H(2)CA to give Ru-3(CO)(10)(mu-H)(HCA), the i.r. spectrum of which revealed that the ligand is bound to the metal as a catechol moiety. The spectroscopic and magnetic studies of the molybdenum and ruthenium complexes confirmed the proposed structures.

引用

页码：121 / 125

页数：5

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