Palladium(II) Complex of a Redox-Active Amidophenolate-Based <i>O</i>,<i>N</i>,<i>S</i>,<i>N</i> Ligand: Its Monocation and Dication and Reactivity with PPh<sub>3</sub>
作者:Akram Ali、Suman K. Barman、Rabindranath Mukherjee
DOI:10.1021/ic503103e
日期:2015.6.1
that the O,N,S,N-coordinated ligand is present in the square-planar complexes [PdII(LAP)2–}] 1, [PdII(LISQ)•–}][PF6]·CH2Cl22, and [PdII(LIBQ)0}][BF4]2·2CH2Cl23, as dianionic (LAP)2–, monoanionic o-iminobenzosemiquinonate(1−) π-radical (Srad = 1/2) (LISQ)•–, and neutral o-iminobenzoquinone (LIBQ)0 redox level. Reaction of 1 and 2 with PPh3 afforded isolation of two crystalline complexes: dark green
一种新的潜在的具有四齿氧化还原活性的邻氨基苯酚基配体H 2 L = 2-(2-乙硫基)吡啶-苯胺基-4,6-二叔丁基苯酚与Pd II(O 2 CCH 3)2反应在空气和Et 3 N存在下,在CH 3 OH中进行分离,从而分离出组成为[Pd(L)] 1的绿色结晶固体。通过循环伏安法(CV)进行检查时,1在E 1/2 = 0.16(峰-峰分离,ΔE p = 100 mV)和0.89 V(ΔE p= 90 mV)vs SCE(饱和甘汞电极)。的化学氧化1通过的[Fe III(η 5 -C 5 H ^ 5)2 ] [PF 6 ]和的AgBF 4在CH 2氯2导致了两个结晶固体,红[加入Pd(L)] [的隔离PF 6 ]·CH 2 Cl 2 2和深绿色的[Pd(L)] [BF 4 ] 2 ·2CH 2 Cl 2 3。100(2)K的单晶X射线晶体学明确地确定O,N,小号,Ñ配位的配位体存在于所述正方形平面配合物[钯II