95392-70-4Relevant academic research and scientific papers
Site selectivity in substitution reactions of heterobinuclear (CO)4Ru(μ-PPh2)Co(CO)3(Ru-Co): Synthesis and characterization of terminal anionic hydrido and halo complexes [Et4N][(X)(CO)3Ru(μ-PPh2)Co(CO) 3]. X-ray structure of [Et4N][(H)(CO)3Ru(μ-PPh2)Co(CO)3]
Guesmi, Salaheddine,Dixneuf, Pierre H.,Süss-Fink, Georg,Taylor, Nicholas J.,Carty, Arthur J.
, p. 307 - 313 (2008/10/08)
The synthesis and characterization of a series of heterobinuclear phosphido-bridged anionic complexes, [M][(X)(CO)3Ru(μ-PPh2)Co(CO)3] (M = Et4N, X = H, 2; M = [(Ph3P)2N], X = I, 3a; M = [(Ph3P)2N], X = Br, 3b), are described. These products result from site-specific substitution of a carbonyl group on the ruthenium atom of (CO)4Ru(μ-PPh2)Co(CO)3 (1) by a hydride or halide ion at the axial-cis and equatorial-trans positions, respectively. The molecular structure of [Et4N][(H)(CO)3Ru(μ-PPh2)Co(CO)3] (2) has been determined by X-ray diffraction. Crystal data: RuCoPO6NC26H31, monoclinic crystals, space group Cc with a = 8.185 (1) A?, b = 22.621 (3) A?, c = 15.865 (2) A?, β = 98.67 (1)°, and Z = 4. The structure was solved and refined to R and Rw values of 0.035 and 0.043, respectively, by using 2302 observed reflections. In the phosphido-bridged heterobinuclear anion a terminal hydride occupies an axial site on ruthenium trans to a CO group and cis to the phosphide bridge with the latter supporting a strong Ru-Co bond (Ru-Co = 2.737 (1) A?). The reactions of the hydrido anion 2 toward MeI, H+, Ph3P, and Ru3(CO)12 are discussed.
