Synthesis of Binucleating Macrocycles and Their Nickel(II) Hydroxo- and Cyano-Bridged Complexes with Divalent Ions: Anatomical Variation of Ligand Features
作者:Xiaofeng Zhang、Deguang Huang、Yu-Sheng Chen、R. H. Holm
DOI:10.1021/ic301506x
日期:2012.10.15
atoms and binding sites and bridges X = OH– and CN– to produce additional members of the macrocyclic family with improved properties. Macrocycle 2 with a 22-membered ring is shown to bind MII = Mn, Fe, and Cu with hydroxo bridges. Introduction of the 4-BuiO group (macrocycle 3) improves the solubility of neutral complexes such as those with NiII–OH–CuII and NiII–CN–FeII bridges. Syntheses of macrocycle
平面 NNN-钳形复合物 [M II (pyN 2 Me2 )(OH)] 1– (M II = Ni, Cu) 将 CO 2固定在 η 1 -OCO 2 H 复合物中;描述了铜系统的结果。Mn II、Fe II、Co II和Zn II表现不同,形成[M II (pyN 2 Me2 ) 2 ] 2–与N 4 O 2配位。将 Ni II钳并入双核大环2含有由两个 1,3-亚联苯基连接的三氨基 M II位点提供了近端 Ni II和 M II位点,用于研究 Ni-X-M 桥单元的合成、结构和反应性。这种配体结构被用作 M II原子和结合位点和桥 X = OH -和 CN -变化的参考,以产生具有改进特性的大环家族的其他成员。显示具有 22 元环的大环2以羟基桥键结合 M II = Mn、Fe 和 Cu。引入 4-Bu i O 基团(大环3) 提高了中性配合物的溶解度,例如那些具有 Ni II -OH-Cu
Copper(<scp>ii</scp>)–hydroxide facilitated C–C bond formation: the carboxamido pyridine system <i>versus</i> the methylimino pyridine system
which dinuclear Cu(I) complexes of [Cu2(py(N–CO)2ph2R2)2]2− (R = methyl (3), methyl and allyl (6)) and trinuclear [CuII–CuI–CuII] complex of [Cu3(⊂20-py(N–CO)2ph2dienMe3)2]+ (9) are obtained. The reactivities of the [CuII–L] (L = DMF, OH−) complexes in dicarboxamido pyridine, carboxamido–methylimino pyridine and dimethylimino pyridine systems are discussed in terms of the electron delocalization properties
通过[Cu I(py(N–C O)(N C–C)的不对称羧酰胺基-甲基亚氨基吡啶吡啶Cu(I)配合物的合成)探索了铜(II)-氢氧化物诱导的碳-碳键形成反应。ph 2 Me2)2 ] -(12)。两个亚胺基甲基偶合,在甲基位置形成桥连的C–C键(NC –CC– C – C N),同时两个Cu 2+中心离子还原为Cu +。用三种双甲酰胺基吡啶[Cu II -OH]配合物检查反应,其中双核Cu(I)[Cu 2(py(N–C O)2 ph 2 R2)2 ] 2-(R =甲基(3),甲基和烯丙基(6))和三核[Cu II –Cu I –Cu II ]复杂的[铜3(⊂ 20 -py(N-C O)2 pH值2二烯ME3)2 ] +(9)获得。的[Cu的反应性II -L(L = DMF,OH -)根据配体的电子离域特性,讨论了二甲酰胺基吡啶,甲酰胺基-甲基亚氨基吡啶和二甲基亚氨基吡啶体系中的配合物。基于