Design of Neutral Metallomesogens from 5,5‐Dimethyldipyrromethane: Metal Ion Mediated Control of Folding and Hairpin Structures
作者:Kelly A. Ames、Simon R. Collinson、Alexander J. Blake、Claire Wilson、Jason B. Love、Duncan W. Bruce、Bertrand Donnio、Daniel Guillon、Martin Schröder
DOI:10.1002/ejic.200800676
日期:2008.11
New ligands derived from 5,5-dimethyldipyrromethane and their corresponding neutral complexes with Zn(II) and Pd(II) are described. The ligands incorporate either hexacatenar [H 2 (1 n ), n = 1, 10, 12, 14 and 16], tetracatenar [H 2 (2 n ), n = 1 and 16] or an extended dicatenar structure [H 2 (3 n ), n = 1 and 16]. Single crystal X-ray structure determinations on [Zn 2 (1 1 ) 2 ] and [Zn 2 (3 1 )
描述了源自 5,5-二甲基二吡咯甲烷的新配体及其与 Zn(II) 和 Pd(II) 的相应中性配合物。配体结合了六连环 [H 2 (1 n ), n = 1, 10, 12, 14 和 16], 四连环 [H 2 (2 n ), n = 1 和 16] 或扩展的二连环结构 [H 2 ( 3 n ), n = 1 和 16]。[Zn 2 (1 1 ) 2 ] 和 [Zn 2 (3 1 ) 2 ] 的单晶 X 射线结构测定证实了 Zn(II) 处的扭曲四面体几何形状以提供双链螺旋结构,而 Pd(II) ) 物种 [Pd(3 1 )] 显示扭曲的方形平面几何形状,配体采用替代发夹构象。不含金属的六链配体 H 2 (1 n ) (n = 10, 12, 14, 16) 和相应的配合物 [Zn 2 (1 16 ) 2 ] 和 [Pd(1 n )] (n = 12, 14 , 16) 不是介形的。然而,X