Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 32993-05-8, C41H35ClP2Ru. A document type is Article, introducing its new discovery., Safety of Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II)
Two ruthenium acetylide complexes [Ru]C?C(C5H 3RN) (1a, R = H; 1b, R = Me; [Ru] = Cp(PPh3) 2Ru) containing 2-pyridyl groups are prepared and their chemical reactivities are explored. Protonation of the ruthenium acetylide complex 1a with HBF4 takes place at both the nitrogen atom and Css, giving the dicationic pyridiniumvinylidene complex {[Ru]=C=C(H)(C5H 4NH)}(BF4)2 (3a). Addition of BF3 to la yields the Lewis acid/base adduct [Ru]OC(C5H4N? BF3) (4a). In the presence of moisture both complexes 3a and 4a in solution transform into the cationic heterocyclic carbene complex {[Ru]=C(O)CH2(C5H4N?BF2)}BF4 (6a), for which the structure is confirmed by X-ray structure determination. The formation of 6a involves the intermediate {[Ru]=C=C(H)(C5H 4N?BF2OH)}BF4 (5a), characterized by spectroscopic methods. DFT calculations show that the Gibbs free energy change of the exothermic transformation of 5a to 6a is -20.59 kcal/mol. N-Alkylation reactions of 1b with two alkyl bromides BrCH2R? (R? = CH=CHCO2Me and CO2Me) yield two pyridiniumacetylide complexes {[Ru]C? C(C5H3MeNCH2R?)} Br (7b, R? = CH=CHCO2Me; 7c, R? = CO2Me, respectively). Complex 7c, characterized by X-ray structure determination, undergoes further protonation to give the pyridiniumvinylidene complex {[Ru]=C=C(H)(C5H4NCH2R?)2+ (8c). Interestingly, the acetylide complex 7b undergoes a C-C coupling reaction of the acetylic Css with the C=C double bond to give the vinylidene complex 9b, characterized also by X-ray structure determination.
Interested yet? Keep reading other articles of 32993-05-8!, Formula: C41H35ClP2Ru
Reference：
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI