Structure, Characterization, and Metal-Complexation Properties of a New Tetraazamacrocycle Containing Two Phenolic Pendant Arms
作者:Xiuling Cui、Maria José Calhorda、Paulo J. Costa、Rita Delgado、Michael G. B. Drew、Vítor Félix
DOI:10.1002/hlca.200490235
日期:2004.10
The new tetraazamacrocycle 2 (=2,2′-[[7-Methyl-3,7,11,17-tetraazabicyclo[11.3.1]heptadeca-1(17),13,15-triene-3,11-diyl]bis(methylene)]bis(4-bromophenol)) was synthesized and used as a ligand for different metal-ion complexes. The X-ray crystal structures of the complexes of the general formula [M(H-2)]+NO⋅MeOH (M=Ni2+, Zn2+), in which only one of the two pendant phenolic OH groups of 2 is deprotonated
新的四氮杂大环2(= 2,2'-[[7-甲基-3,7,11,17-四氮杂双环[11.3.1] heptadeca-1(17),13,15-三烯-3,11-二基]合成了双(亚甲基)]双(4-溴苯酚),并用作不同金属离子络合物的配体。通式[M(H- 2)] + NO·MeOH(M = Ni 2 +,Zn 2+)的配合物的X射线晶体结构,其中两个侧基酚羟基只有2个被去质子化,被确定。在这两种配合物中,配位环境均为[5 + 1]型,大环骨架的四个N原子定义了围绕金属中心的正方形平面排列,相似的NiN和ZnN距离为1.961(9)至2.157 (9)Å和2.021(9)至2.284(8)Å。与此相反,MO距离是显着不同,2.060(6)和2.449(8)一种在镍II络合物,和2.027(7)和2.941(9)一种在锌II复合物。所述UV /镍的VIS光谱II和Cu II络合物具有配体2,与Cu的EP