A new oxidation procedure of alkynes catalyzed by Tp(PPh(3))(CH(3)CN)Ru-Cl is presented, which provides an efficient way to obtain alkenyl 1,2-diketones via ruthenium alkenyl 1,2-diketone intermediates. In contrast, the analogous reactions with Tp(PPh(3))(PhCN)Ru-Cl gave rise to the ruthenium metallacycle complexes.
In the title compound, [Ru(CO)(NH3)(C9H10BN6)(C18H15P)]Cl·2CH2Cl2, the coordination environment around the RuII atom is distorted octahedral. One of the Ru—N(Tp) [Tp = hydridotris(pyrazol-1-yl)borate] bond lengths is slightly longer than the other two as a result of the influence of the trans CO ligand. In the crystal, N—H⋯Cl hydrogen bonds link the complex cations and Cl− anions. π–π interactions between the pyrazole rings [centroid–centroid distance = 3.764 (3) Å] are also present.
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