131220-50-3Relevant academic research and scientific papers
Vinyliden-Uebergangsmetallkomplexe XV. Mesitylen-Osmiumkomplexe mit Hydrido-, Carboxylato-, Carbonyl- und Vinyliden-Liganden
Werner, H.,Stahl, S.,Kohlmann, W.
, p. 285 - 298 (2007/10/02)
The complexes (Mes)Os(L)Cl2 (L = MeCN, PPh3, PiPr3, PMetBu2) have been prepared in excellent yield from n (1) and ligand L.Reaction of 1 with excess CH3CO2Ag or CF3CO2Ag leads to the formation of the bis(carboxylato)osmium compounds (Mes)Os(η2-O2CCH3)(η1-O2CCH3) and (Mes)Os(η2-O2CCF3)(η1-O2CCF3).Treatment of 1 with an equimolar amount of silver acetate gives the complex (Mes)Os(η2-O2CCH3)Cl.The monohydrido compounds (Mes)OsH(L)Cl (L = PMe3, PiPr3, PPh3, DMSO) are obtained from (Mes)Os(L)Cl2 by three different routes.Reaction of(Mes)OsH2(PMe3) with HBF4 at -78 deg C in ether gives the BF4 salt of the cation +, which according to the T1 value of > 2 s has a classical hydride structure.On protonation of (Mes)OsH(PiPr3)Cl with HBF4, the coordinatively unsaturated cation iPr3)Cl>+ is formed which spontaneously reacts with CO and CH3CCH to give the complexes iPr3)Cl>+ and iPr3)Cl>+, respectively.The synthesis of the compounds PF6 (R = Me, iPr, Ph) and tBu2)Cl>PF6, using (Mes)Os(PR3)Cl2 as starting material, is also described.On deprotonation of +, the alkynyl osmium complexes (Mes)Os(CCMe)(PR3)Cl (PR3 = PiPr3, PMetBu2) are obtained.
