Carbon dioxide cleavage across a tungsten-alkylidyne bearing a trianionic pincer-type ligand. Issue 40 (2nd June 2016)

• Record Type: Journal Article
• Authors: Gonsales, Stella A.; Ghiviriga, Ion; Abboud, Khalil A.; Veige, Adam S.
• Is Part Of: Dalton transactions. Volume 45:Issue 40(2016)
• Page Start: 15783
• Page End: 15785
• Publication Date: 2016-06-02
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c6dt01049k
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Splitting of CO2 across the tungsten-carbon triple bond in [CF3 -ONO]WCC t Bu(THF)2 (1 ) yields the tungsten oxo ketene [CF3 -ONO]W(O){(CH3 )3 CCCO} (6 ). Abstract : The cleavage of carbon dioxide by the tungsten alkylidyne [CF3 -ONO]WCC t Bu(THF)2 (1 ) {where CF3 -ONO = (MeC6 H3 [C-(CF3 )2 O])2 N 3− }, is reported. Splitting of CO2 yields the tungsten oxo ketene complex [CF3 -ONO]W(O){(CH3 )3 CCCO} (6 ). The proposed pathway occurs through initial cycloaddition of WC and CO bonds to generate a heterometallacyclobutene, which then rearranges to yield WO and CC bonds. Complex6 was characterized by multinuclear NMR, IR, and single crystal X-ray diffraction.