...
首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >Mixed-ligand zinc(II) complexes with diethylenetriamine (or triethylenetetramine) and alpha-(or beta-) alaninehydroxamic acids in water solution. Potentiometric and NMR studies
【24h】

Mixed-ligand zinc(II) complexes with diethylenetriamine (or triethylenetetramine) and alpha-(or beta-) alaninehydroxamic acids in water solution. Potentiometric and NMR studies

机译:与二亚乙基三胺(或三亚乙基四胺)和α-(或β-)丙氨酸异羟肟酸的混合配体锌(II)配合物。电位和NMR研究

获取原文
获取原文并翻译 | 示例
           

摘要

Stabilities of the mixed-ligand complexes of Zn-II ion with diethylenetriamine [bis(2-aminoethyl)amine, dien) or triethylenetetramine [ethylenebis(2'-aminoethylamine, trien] as a primary ligand A and alpha-alaninehydroxamic acid [2-amino-N-hydroxypropanamid, alpha-Alaha] or beta-alaninehydroxamic acid [3-amino-N-hydroxypropanamid, beta-Alaha] as a secondary ligand L and their NMR behaviour are reported. The NMR spectra show that in the binary systems alpha- and beta-Alaha are capable of binding zinc(II) in either (O,O) or (N,N) chelating mode. In contrast, in the ternary systems both behave as simple hydroxamic acids, thus, co-ordinate zinc(II) exclusively through the oxygens of the hydroxamate groups. This is reflected in the same basicity-adjusted stability constants, log KZn(dien)(alpha-Alaha)(beta-Alaha)-pK(NHOH)(micro) (C) 2002 Elsevier Science B.V. All rights reserved. [References: 37]
机译:Zn-II离子与作为主要配体A的二亚乙基三胺[双(2-氨基乙基)胺,二烯)或三亚乙基四胺[亚乙基双(2'-氨基乙胺,三烯)]和α-丙氨酸异羟肟酸[2-的混合配体络合物的稳定性氨基-N-羟基丙酰胺,α-Alaha]或β-丙氨酸异羟肟酸[3-氨基-N-羟基丙酰胺,β-Alaha]作为二级配体L,其NMR行为得到了报道,NMR光谱表明,在二元体系中,α -和β-Alaha能够以(O,O)或(N,N)螯合方式结合锌(II)。相比之下,在三元体系中,两者均表现为简单的异羟肟酸,因此,配位锌( II)仅通过异羟肟酸酯基团的氧来反映,这反映在相同的碱度调整的稳定常数上,log KZn(dien)(alpha-Alaha)(beta-Alaha)-pK(NHOH)(micro)(C) Elsevier Science BV保留所有权利[参考文献:37]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号