Übergangsmetall‐substituierte Diphosphene, XIX. Zur Reaktivität von Disilylphosphido‐Eisenkomplexen gegenüber 2,4,6‐(CF3)3C6H2PCl2und 2,6‐(CF3)2C6H3PCl2— Diphosphenylkomplexe mit Fluorarylsubstituenten

Abstract

Transition‐Metal‐Substituted Diphosphenes. XIX. ‐ On the Reactivity of Disilylphosphido Iron Complexes towards 2,4.6‐(CF3)3C6H2PCl2and 2.6‐(CF3)2C6H3PCl2. Diphosphenyl Complexes with Fluoroaryl Substituents(η5‐C5Me5)(CO)2FeP(SiMe3)2(2a) and (η5‐C5H5)(CO)(PPh3)‐FeP(SiMe3)2(2c) react with ArylPCl2[3a: Aryl  2,4,6‐(CF)3‐C6H2;b: Aryl  2,6‐(CF)2C6H3] to yield the thermolabile diphosphenyl complexes (η5‐C5Me5)(CO)2FePP‐Aryl (4a,b) and (η5‐C5H5)(CO)(PPh3)FePP‐Aryl (4c,d), respectively. The isolation of the pure compounds4a‐dfailed. They are, however, intercepted as their (CO)5Cr adducts5a–dby treatment with [(Z)‐cyclooctene]Cr(CO)5‐ Complex (η5C5Me5)(CO)2FeP[Cr(CO)5] P‐C6H2(CF3)3‐(2,4,6) (5a) is characterized by single‐crystal X‐ray diffraction analysis.