Tetraamide macrocyclic complexes of transition metals with ligands derived from hydrazine

被引:0
作者
Mohammad Shakir
Khan S. Islam
Ajax K. Mohamed
Nafees Jahan
机构
[1] Aligarh Muslim University,Division of Inorganic Chemistry, Department of Chemistry
来源
Transition Metal Chemistry | 1997年 / 22卷
关键词
Nitrogen; Copper; Physical Chemistry; Formaldehyde; Hydrate;
D O I
暂无
中图分类号
学科分类号
摘要
Succinic acid or phthalic acid react with hydrazine hydrate and formaldehyde in the presence of metal ions to give the macrocyclic complexes [ML1Cl2] or [ML2Cl2][M = FeII, CoII, NiII, CuII and ZnII]. The resulting cyclization has been identified, on the basis of i.r. and 1H-n.m.r. studies. The coordination of amide groups through nitrogen and the overall geometry of the complexes have been assigned on data obtained from elemental analyses i.r., u.v.-vis., magnetic moments, e.p.r and conductivity studies. All the complexes exhibit an octahedral geometry, except copper which is square planar, where the amide group coordinates through nitrogen, and are air stable. The observed low molar conductivity values suggest the non-ionic nature of all the compounds.
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页码:189 / 192
页数:3
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