Versatile New <i>C</i><sub>3</sub>-Symmetric Tripodal Tetraphosphine Ligands; Structural Flexibility to Stabilize Cu<sup>I</sup> and Rh<sup>I</sup> Species and Tune Their Reactivity
作者:Jeroen Wassenaar、Maxime A. Siegler、Anthony L. Spek、Bas de Bruin、Joost N. H. Reek、Jarl Ivar van der Vlugt
DOI:10.1021/ic100221w
日期:2010.7.19
high-yielding synthesis and detailed characterization of two well-defined, linkage isomeric tripodal, tetradentate all-phosphorus ligands 1−3 is described. Coordination to CuI resulted in formation of complexes 4−6, for which the molecular structures indicate overall tridentate coordination to the copper atom in the solidstate, with one dangling peripheral phosphine. The solution studies suggest fast exchange
Tris-2-(3-methylindolyl)phosphine as an anion receptor
作者:Joanne O. Yu、C. Scott Browning、David H. Farrar
DOI:10.1039/b714889e
日期:——
A C3-symmetric phosphine with indolyl substituents has been synthesized that demonstrates the capability to bind anions through the indole NH sites and coordinate metal centres through the phosphorus centre.
Synthetic indole, carbazole, biindole and indolocarbazole-based receptors: applications in anion complexation and sensing
作者:Philip A. Gale
DOI:10.1039/b809508f
日期:——
Indole, biindole, carbazole and indolocarbazole-based receptors are rapidly emerging as an important new class of anion-binding agents. This Feature Article provides a comprehensive overview of the molecular recognition and structural chemistry of these neutral, yet highly effective, anion receptors and sensors.
Activation of H2 by a highly distorted RhII complex with a new C3-symmetric tripodal tetraphosphine ligand
作者:Jeroen Wassenaar、Bas de Bruin、Maxime A. Siegler、Anthony L. Spek、Joost N. H. Reek、Jarl Ivar van der Vlugt
DOI:10.1039/b917632b
日期:——
Facile oxidation of a sterically encumbered RhI complex generates a stable RhII metalloradical species; the latter is able to activate H2 under formation of the corresponding RhIII complex.
Coordination of 3‐Methylindole‐Based Tripodal Tetraphosphine Ligands to Iron(+II), Cobalt(+II), and Nickel(+II) and Investigations of their Subsequent Two‐Electron Reduction
作者:Fenna F. van de Watering、Wowa Stroek、Jarl Ivar van der Vlugt、Bas de Bruin、Wojciech I. Dzik、Joost N. H. Reek
DOI:10.1002/ejic.201701209
日期:2018.3.22
monocationic iron(II) complexes also have distorted trigonal bipyramidal geometries, but the dicationic analogue has an octahedral geometry. Two‐electron reduction of the cobalt(+II) and the nickel(+II) complexes in the presence of N2 did not lead to the coordination of N2. In contrast, two‐electron reduction of the iron(+II) complexes did lead to coordination of dinitrogen to the iron center. The Fe0N2
我们报道了基于吲哚的三足四膦配体与铁(II)、钴(II)和镍(II)的配位化学。这些复合物是通过简单的合成方案形成的,并通过光谱技术和单晶 X 射线分析的结合来表征。X射线衍射测定的分子结构表明镍钴配合物的几何形状是扭曲的三角双锥体。单阳离子铁(II)配合物也具有扭曲的三角双锥几何形状,但双阳离子类似物具有八面体几何形状。在 N2 存在下,钴(+II)和镍(+II)配合物的双电子还原不会导致 N2 的配位。相反,铁(+II)络合物的双电子还原确实导致二氮与铁中心的配位。Fe0N2 L1H配合物具有三角双锥几何形状,并且配位二氮配体的N-N键长度比游离二氮长,表明与该铁(0)配合物的配位导致N−N键的激活。