78168-10-2Relevant academic research and scientific papers
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.
