912340-92-2Relevant academic research and scientific papers
Ruthenium vinylidene and carbyne complexes containing a multifunctional tridentate ligand with a PNN donor set
Beach, Nicholas J.,Walker, Jesse M.,Jenkins, Hilary A.,Spivak, Gregory J.
, p. 4147 - 4152 (2006)
The neutral, octahedral ruthenium vinylidene complexes mer,trans-[(PNN)Cl2Ru(CCHR)] (PNN = N-(2-diphenylphosphinobenzylidene)-2-(2-pyridyl)ethylamine; R = Ph, 1a; R = tBu, 1b) are reported. An X-ray crystallographic study of 1a confirms the tridentate, meridional coordination mode of the PNN ligand. Compounds 1a and 1b undergo regioselective electrophilic addition with HBF4 · Et2O at Cβ of the vinylidene ligand at low temperatures, and are cleanly and quantitatively converted to the ruthenium carbynes mer,trans-[(PNN)Cl2Ru(CCH2R)][BF4] (R = Ph, 2a; R = tBu, 2b). Carbynes 2a and 2b are stable only at low temperatures (2Ru(L)] (L = MeCN, 3a; L = CO, 3b).
