1.
Angew Chem Int Ed Engl
; 56(52): 16650-16653, 2017 12 22.
Article
in English
| MEDLINE
| ID: mdl-29125204
ABSTRACT
Hydrogenolysis of the scorpionate-supported barium alkyl complex (TpAd,iPr )Ba[CH(SiMe3 )2 ](THF) (TpAd,iPr =hydrotris(3-adamantyl-5-isopropyl-pyrazolyl)borate) afforded the dinuclear barium hydrido complex [(TpAd,iPr )Ba(µ-H)]2 (2), which was characterized by NMR spectroscopy and single-crystal X-ray analysis. Exposure of 2 with 1â atm of CO resulted in a reductive coupling process to form the cis-ethendiolate dianion (3). Reaction of 2 with one equivalent of PhC≡C-C≡CPh gave barium 1,4-diphenyl-2-butyne-1,4-diyl complex {[(TpAd,iPr )Ba]2 (PhCH-C≡C-CHPh) (4).