Synthesis and characterization of copper(II), cobalt(II), nickel(II), and iron(III) complexes with two diamine Schiff bases and catalytic reactivity of a chiral diamine cobalt(II) complex

被引：0
作者：
Nabil S. Youssef
Eman A. El-Zahany
Barsoum N. Barsoum
Ahmed M. A. El-Seidy
机构：
[1] National Research Centre,Inorganic Chemistry Department
[2] Cairo University,Chemistry Department
来源：
Transition Metal Chemistry | 2009年 / 34卷
关键词：
Schiff Base; Molar Conductivity; Cobalt Complex; Azomethine Nitrogen; Nujol Mull;
D O I：
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中图分类号：
学科分类号：
摘要：
New transition metal complexes of Co(II), Cu(II), Ni(II), and Fe(III) of the ligands 6,6′-(1E,1′E)-(4,5-dimethyl-1,2-phenylene)bis(azan-1-yl-1-ylidene)bis(methan-1-yl-1-ylidene)bis(7-hydroxy-5-methoxy-2-methyl-4H-chromen-4-one) H2L1 and 6,6’-(1E,1′E)-cyclohexane-1,2-diylbis(azan-1-yl-1-ylidene)bis(methan-1-yl-1-ylidene)bis(7-hydroxy-5-methoxy-2-methyl-4H-chromen-4-one) H2L2 have been prepared and characterized using physio-chemical and spectroscopic methods. The results obtained for the complexes indicated that the geometries of the metal centres are either square planar or octahedral. Cyclopropanation reactions of unactivated olefins by ethyldiazoacetate (EDA) in the presence of [L1Cu]·H2O, [L2Cu]·2H2O and [L2*Co]·2H2O as catalysts were examined. The results showed that only [L2*Co]·2H2O can act as a catalyst for the cyclopropanation reaction of unactivated olefins with very high selectivity (up to 99% based on EDA).
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页码：905 / 914
页数：9
相关论文
共 188 条
[11]  
Sousa-Pedrares A(1996)undefined Bull Korean Chem Soc 17 688-undefined
[12]  
Alonso M(2006)undefined Chem Rev 106 3561-undefined
[13]  
Vizoso A(2000)undefined Chem Rev 100 2159-undefined
[14]  
Romero J(2004)undefined J Organomet Chem 689 4110-undefined
[15]  
García-Vázquez JA(2008)undefined J Organomet Chem 693 2377-undefined
[16]  
Sousa A(1999)undefined Bull Chem Soc Jpn 72 603-undefined
[17]  
Tianzhi Y(2003)undefined Synlett 3 281-undefined
[18]  
Wenming S(2006)undefined Chem Rev 106 3987-undefined
[19]  
Wenlian L(2009)undefined Inorg Chim Acta 362 2006-undefined
[20]  
Ziruo H(2009)undefined J Mol Catal A : Chem 308 159-undefined
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