Sophie Beard, Alejandro Grasa, Fernando Viguri, Ricardo Rodríguez, José A López, Fernando J Lahoz, Pilar García-Orduña, Pilar Lamata, Daniel Carmona
The transition metal frustrated Lewis pair compounds [(Cym)M(κ3 S,P,N-HL1)][SbF6 ] (Cym = η6 - p -MeC6 H4 iPr; H2L1 = N -( p -tolyl)- N '-(2-diphenylphosphanoethyl)thiourea; M = Ru (5), Os (6)) have been prepared from the corresponding dimer [{(Cym)MCl}2 (μ-Cl)2 ] and H2L1 by successive chloride abstraction with NaSbF6 and AgSbF6 and NH deprotonation with NaHCO3 . Complexes 5 and 6 and the previously reported phosphano-guanidino compounds [(Cym)M(κ3 P,N,N'-HL2)][SbF6 ] [H2L2 = N , N '-bis( p -tolyl)- N ''-(2-diphenylphosphanoethyl) guanidine; M = Ru (7), Os (8)] and pyridinyl-guanidino compounds [(Cym)M(κ3 N,N',N''-HL3)][SbF6 ] [H2L3 = N , N '-bis( p -tolyl)- N ''-(2-pyridinylmethyl) guanidine; M = Ru (9), Os (10)] heterolytically activate H2 in a reversible manner affording the hydrido complexes [(Cym)MH(H2L)][SbF6 ] (H2L = H2L1; M = Ru (11), Os (12); H2L = H2L2; M = Ru (13), Os (14); H2L = H2L3; M = Ru (15), Os (16))...
September 4, 2023: Dalton Transactions: An International Journal of Inorganic Chemistry