77308-83-9Relevant academic research and scientific papers
Acceleration of CO dissociation by a heterometallic center: Substitutional reactivity of Fe2Ru(CO)12 and FeRu2(CO)12
Shojaie, Rasul,Atwood, Jim D.
, p. 2199 - 2201 (2008/10/08)
The substitutional reactivity of the mixed-metal clusters FeRu2(CO)12 and Fe2Ru(CO)12 has been investigated as a comparison to Fe3(CO)12 and Ru3(CO)12. The reactions are first order in cluster with only a very small dependence on the entering ligand (L = PPh3 or P(OMe)3), consistent with a dissociative interchange mechanism. The activation parameters and all other data are consistent with CO dissociation as the rate-determining step. FeRu2(CO)12 undergoes substitution to FeRu2(CO)10L2 (both ligands substituted on ruthenium) with no evidence for a monosubstituted cluster. Substitution on Fe2Ru(CO)12 leads initially to Fe2Ru(CO)11L (substitution on ruthenium) and subsequently to Fe2Ru(CO)10L2 (substitution on iron and ruthenium). CO dissociation from Fe2Ru(CO)12 and FeRu2(CO)12 occurs more rapidly than from Fe3(CO)12 or from Ru3(CO)12, suggesting a metal center effect on CO dissociation.
Synthesis of novel halo-bridged trinuclear ruthenium-iron derivatives. X-ray structure of FeRu2(μ-Cl)2(CO)8(Ph 2PC≡C-t-Bu)2
Jones, Denis F.,Dixneuf, Pierre H.,Southern, Timothy G.,Le Marouille, Jean-Yves,Grandjean, Daniel,Guenot, Pierre
, p. 3247 - 3252 (2008/10/08)
Reaction of RuCl2(L)C6H6 (1) (L = P(OMe)3, PPh3, PMe2Ph, PMe3, Ph2PC≡C-t-Bu) with Fe2(CO)9 yields trinuclear complexes Ru3(CO)10L2 (2), FeRu2(CO)10L2 (3), and RuFe2(CO)11L (4) which has two carbonyls bridging the equivalent iron atoms and, as the major product, the novel derivative FeRu2(μ-Cl)2(CO)8L2 (5) resulting from partial dehalogenation. All these compounds have the phosphorus groups selectively bonded to the ruthenium atoms. The compound FeRu2(μ-Cl)2(CO)8(Ph 2PC≡C-t-Bu)2 (5e) crystallizes in space group P21/c with cell dimensions a = 12.103 (1) A?, b = 21.618 (7) A?, c = 17.949 (5) A?, β = 97.873 (27)°, and Z = 4. Refinement based on 3520 observed diffractometer data converged at R = Rw = 0.083. Each phosphorus atom is coordinated to one ruthenium atom in a position trans to the Fe-Ru bonds which are equivalent [Fe-Ru(1) = 2.808 (3) A? and Fe-Ru(2) = 2.809 (3) A?]. The Ru-Fe-Ru angle is 69.07 (4)°. The ruthenium atoms are bridged by two chloro groups and are maintained at a distance of 3.185 (2) A?. The relative positions of the phosphinoacetylene groups destroy the C2v symmetry.
