Ylidaddukte der Penteltrichloride

Application of the Donor–Acceptor Concept to Intercept Low Oxidation State Group 14 Element Hydrides using a Wittig Reagent as a Lewis Base

“…With the goal of expanding the range of suitable donors for stabilizing low oxidation state main group hydrides, our attention shifted to exploring Wittig reagents R′ 3 PCR 2 as Lewis bases . This study was motivated by the structural parallels that exist between Wittig reagents and N -heterocyclic olefins (such as IPrCH 2 ) due to the mutual presence of ylidic bonding, leading to significant electron density being positioned at a terminal carbon atom (Scheme ) .…”

“…Furthermore, the ability to rapidly prepare structural variants of this Wittig reagent from inexpensive reagents makes this system advantageous over many well-known N -heterocyclic carbene-based donors. It should be mentioned that, while the use of related Wittig reagents as ligands is known for transition metals and actinides, well-defined coordination chemistry involving R′ 3 PCR 2 donors within the main group remains a largely untouched area …”