Documentation scienceplus.abes.fr version Bêta

À propos de : Synthesis and Solid State Characterization of aMeridional Triphos Iridium Metallacycle−CarbeneComplex: [{PhP(CH2CH2PPh2)2}Ir(CRCRCRCR){=C(CH2)3O}][BF4] (R = Co2Me)        

AttributsValeurs
type
Is Part Of
Subject
Title
  • Synthesis and Solid State Characterization of aMeridional Triphos Iridium Metallacycle−CarbeneComplex: [{PhP(CH2CH2PPh2)2}Ir(CRCRCRCR){=C(CH2)3O}][BF4] (R = Co2Me)
has manifestation of work
related by
Author
Abstract
  • The five-coordinate iridium metallacycle [(PPh3)2Ir(CRCRCRCR)(Cl)] (5, R = CO2CH3) and [PhP(CH2CH2PPh2)2] are converted in refluxing toluene to the triphos complexes [{PhP(CH2CH2PPh2)2}Ir(CRCRCRCR)Cl] (6-fac and 6-mer). Halide abstraction followed by reaction with 3-butyn-1-ol gives the carbene complex mer-[{PPh(CH2CH2PPh2)2}Ir(CRCRCRCR)(COCH2CH2CH2)]BF4 (9, R = CO2CH3).
  • The five-coordinate iridium metallacycle[(PPh3)2Ir(CRCRCRCR)(Cl)] (5, R = CO2CH3) andtrisphosphine [PhP(CH2CH2PPh2)2] are readily converted in refluxing toluene to the fac- and mer-triphosmetallacyclopentadiene complexes [{PhP(CH2CH2PPh2)2}Ir(CRCRCRCR)Cl] (6-fac and 6-mer). Halide abstraction from the facial isomer 6-fac gives the isolablecationic solvate [{PhP(CH2CH2PPh2)2}Ir(CRCR−CRCR)(ClCH2Cl)]BF4 (7, R = CO2CH3) which adopts a mer-geometry. Reaction of 7 with carbon monoxide generatesthe mer isomer of [{PhP(CH2CH2PPh2)2}Ir(CRCRCRCR)(CO)] BF4 (8, R = CO2CH3); whereas, reaction of 7with 3-butyn-1-ol gives the mer-carbene complex [{PPh(CH2CH2PPh2)2}Ir(CRCRCRCR)(COCH2CH2CH2)]BF4 (9, R = CO2CH3). A single-crystal X-ray crystallographic analysis of 9 represents the first solid-statecharacterization of a meridional [PhP(CH2CH2PPh2)2]iridium complex.
article type
is part of this journal



Alternative Linked Data Documents: ODE     Content Formats:       RDF       ODATA       Microdata