Na
<sub>2</sub>
(smbipy) – A Bipyridine‐Derived Ligand with Chelating Sulfonate Tags and Its 3d Metal Complexes
作者:Benjamin Oelkers
DOI:10.1002/ejic.201402736
日期:2014.12
soluble in water, and their crystal structures show fourfold equatorial coordination (κ4N,N′,O,O′) of the smbipy ligand. Ammonia-rich solutions of the NiII and CuII aqua complexes yield the decomplexation products [Ni(NH3)6](smbipy), [Ni(NH3)5(H2O)](smbipy) and [Cu(NH3)4](smbipy)·2H2O. Buffered solutions with a reduced ammonia content lead to [Ni(smbipy)(NH3)2] and [Cu(smbipy)(NH3)3]·2H2O, and the latter
合成了磺化联吡啶衍生物6,6'-双(磺基甲基)-2,2'-联吡啶二钠[Na2(smbipy)],并研究了其在水溶液中对二价3d金属的络合行为。晚期 3d 金属 [M(smbipy)(H2O)2]·H2O (M = Co, Ni, Zn) 和 [Cu(smbipy)(H2O)] 的配合物微溶于水,其晶体结构显示四重赤道smbipy 配体的配位 (κ4N,N',O,O')。NiII 和 CuII 水络合物的富氨溶液产生解络产物 [Ni(NH3)6](smbipy)、[Ni(NH3)5(H2O)](smbipy) 和 [Cu(NH3)4](smbipy) ·2H2O。氨含量降低的缓冲溶液导致 [Ni(smbipy)(NH3)2] 和 [Cu(smbipy)(NH3)3]·2H2O,后者仅通过氮原子 (κ2N ,N')。当应用几乎定量的氨时,会形成两个具有核心基序 [(smbipy)Cu(μ-OH)2Cu]