Receptor versus Counterion: Capability of
<i>N</i>
,
<i>N′</i>
‐Bis(2‐aminobenzyl)‐diazacrowns for Giving Endo‐ and/or Exocyclic Coordination of Zn
<sup>II</sup>
作者:Lea Vaiana、Carlos Platas‐Iglesias、David Esteban‐Gómez、Fernando Avecilla、Andrés de Blas、Teresa Rodríguez‐Blas
DOI:10.1002/ejic.200601012
日期:2007.5
The structure of Zn II complexes with receptors L 1 and L 2 [L 1 = N,N'-bis(2-aminobenzyl)-1,10 -diaza-15-crown-5 and L 2 = N,N'-bis(2-aminobenzyl)-4,13-diaza-18-crown-6] was studied both in the solid state and in acetonitrile solution. Both receptors form mononuclear Zn II complexes in this solvent, while no evidence for the formation of dinuclear complexes was obtained. This is in contrast with previous
Zn II 与受体 L 1 和 L 2 复合物的结构 [L 1 = N,N'-bis(2-aminobenzyl)-1,10 -diaza-15-crown-5 和 L 2 = N,N'-bis (2-aminobenzyl)-4,13-diaza-18-crown-6] 在固态和乙腈溶液中进行了研究。两种受体都在该溶剂中形成单核 Zn II 复合物,而没有获得双核复合物形成的证据。这与之前的研究形成对比,之前的研究表明 L 2 与第一排过渡金属如 Ni II、CO II 和 Cu II 形成双核配合物。式[Zn(L 1 )](ClO 4 ) 2 (1), [Zn(L 1 )](NO 3 ) 2 ·2CH 3 CN (2), [Zn(L 2 )](ClO 4 )的化合物2 (3) 和[Zn(L 2 )-(NO 3 ) 2 ] (4) 被分离出来并通过X 射线衍射分析进行结构表征。L 1 在