A new class of palladium pincer complexes bearing m-terphenyl scaffolds haVe been synthesized and structurally characterized. As a result of integrating phenyl rings into the chelating arms of m-xylyl type pincer ligands, highly twisted and rigid structures haVe been achieVed.
Unlike the mythical Pushmi–Pullyu beast, push–pull stabilization of phosphinidenes is a reality. [ArP(AuCl)2PMe3] (Ar=aryl) represent interesting examples of phosphinidenes having both main group Lewis acid (LA) and Lewis base (LB) adducts. These materials have been structurally authenticated and show longer PP bonds and greater stabilization than of purely base‐stabilized phosphinidenes (in ArPPMe3).
Anders als Doktor Dolittles Stoßmich‐Ziehdich ist die Push‐pull‐Stabilisierung von Phosphinidenen real: [ArP(AuCl)2PMe3]‐Spezies (Ar=Aryl) sind Phosphinidene (RP), die gleichzeitig mit Lewis‐Säuren (LA) und mit Lewis‐Basen (LB) zu Addukten zusammenlagern (siehe Bild). Die Addukte haben längere P‐P‐Bindungen und sind stabiler als rein basenstabilisierte Phosphinidene.
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