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Diorganophosphanylphosphinidenes as Complexed Ligands: Synthesis via an Anionic Terminal Phosphide of Niobium
Author(s) -
Figueroa Joshua S.,
Cummins Christopher C.
Publication year - 2004
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200352779
Subject(s) - phosphide , chemistry , niobium , nucleophile , cleavage (geology) , transition metal , nucleophilic substitution , metal , sodium , stereochemistry , medicinal chemistry , inorganic chemistry , organic chemistry , catalysis , materials science , fracture (geology) , composite material
Reductive cleavage of a bridging diphosphide complex with sodium amalgam affords the sodium salt of the terminal niobium phosphide anion [PNb(N[Np]Ar) 3 ] − ( 1 ; Np=neopentyl, Ar=3,5‐Me 2 C 6 H 3 ), which is best formulated as containing an NbP triple bond. The phosphorus atom of 1 is nucleophilic. Treatment of 1 with ClP( t Bu) 2 or ClP(Ph) 2 provides η 2 ‐phosphanylphosphinidene complexes, which are the first examples of such complexed ligands bound to an early‐transition‐metal fragment.